Xây dựng chat agent Build a chat agent
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Tutorial đa lĩnh vực — kết hợp nhiều sản phẩm Cloudflare. Tutorial «Xây dựng chat agent» giúp bạn làm quen luồng triển khai thật — phù hợp đọc trước khi mở tài liệu gốc tiếng Anh. Đọc phần tóm tắt và lưu ý trước — sau đó mở docs gốc để copy lệnh và cấu hình chi tiết.
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astro-ho4vn3za"> <ul class="mt-0.5 ml-3 list-none border-l border-[var(--sidebar-border)] p-0 pl-2 astro-ho4vn3za"> <li class="break-words astro-ho4vn3za"> <a href="/agents/concepts/what-are-agents/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">What are agents?</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/concepts/conversation-state-and-memory/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Conversation state and memory</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/concepts/tools/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Tools</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/concepts/calling-llms/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Calling LLMs</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/concepts/workflows/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Using Agents with Workflows</span> </a> </li><li class="break-words astro-ho4vn3za"> <details class="group/accordion astro-ho4vn3za"> <summary class="group/expander flex min-h-[2.125rem] cursor-pointer items-center justify-between rounded-lg px-3 py-1.5 text-sm no-underline outline-2 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class="astro-ho4vn3za"></sl-sidebar-restore> <div class="sidebar-accordion grid grid-rows-[0fr] group-open/accordion:grid-rows-[1fr] astro-ho4vn3za"> <div class="sidebar-accordion-inner min-h-0 overflow-hidden astro-ho4vn3za"> <ul class="mt-0.5 ml-3 list-none border-l border-[var(--sidebar-border)] p-0 pl-2 astro-ho4vn3za"> <li class="break-words astro-ho4vn3za"> <a href="/agents/concepts/agentic-patterns/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za" data-group-label="Agentic patterns"> <span class="astro-ho4vn3za">Overview</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/concepts/agentic-patterns/human-in-the-loop/" class="flex 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</details> </li> </ul> </div> </div> </details> </li><li class="break-words astro-ho4vn3za"> <details class="group/accordion astro-ho4vn3za"> <summary class="group/expander flex min-h-[2.125rem] cursor-pointer items-center justify-between rounded-lg px-3 py-1.5 text-sm no-underline outline-2 outline-offset-[-2px] outline-transparent transition-colors duration-150 select-none focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 [&::-webkit-details-marker]:hidden [&::marker]:hidden hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] font-medium text-[var(--sidebar-text)] astro-ho4vn3za"> <span class="group-label astro-ho4vn3za"> <span class="large astro-ho4vn3za">Communication channels</span> </span> <svg aria-hidden="true" class="caret -mr-px ml-auto shrink-0 text-base text-[var(--sidebar-text)] opacity-50 transition-transform duration-250 group-hover/expander:text-[var(--sidebar-hover-text)] astro-ho4vn3za astro-r7kprdcr" width="16" height="16" viewBox="0 0 24 24" fill="currentColor" style="--sl-icon-size: 1.25rem;"><path d="m14.83 11.29-4.24-4.24a1 1 0 1 0-1.42 1.41L12.71 12l-3.54 3.54a1 1 0 0 0 0 1.41 1 1 0 0 0 .71.29 1 1 0 0 0 .71-.29l4.24-4.24a1.002 1.002 0 0 0 0-1.42Z"/></svg> </summary> <sl-sidebar-restore data-index="2" class="astro-ho4vn3za"></sl-sidebar-restore> <div class="sidebar-accordion grid grid-rows-[0fr] group-open/accordion:grid-rows-[1fr] astro-ho4vn3za"> <div class="sidebar-accordion-inner min-h-0 overflow-hidden astro-ho4vn3za"> <ul class="mt-0.5 ml-3 list-none border-l border-[var(--sidebar-border)] p-0 pl-2 astro-ho4vn3za"> <li class="break-words astro-ho4vn3za"> <details class="group/accordion astro-ho4vn3za"> <summary class="group/expander flex min-h-[2.125rem] cursor-pointer items-center justify-between rounded-lg px-3 py-1.5 text-sm no-underline outline-2 outline-offset-[-2px] outline-transparent transition-colors duration-150 select-none focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 [&::-webkit-details-marker]:hidden [&::marker]:hidden hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] font-medium text-[var(--sidebar-text)] astro-ho4vn3za"> <span class="group-label astro-ho4vn3za"> <span class="astro-ho4vn3za">Chat</span> </span> <svg aria-hidden="true" class="caret -mr-px ml-auto shrink-0 text-base text-[var(--sidebar-text)] opacity-50 transition-transform duration-250 group-hover/expander:text-[var(--sidebar-hover-text)] astro-ho4vn3za astro-r7kprdcr" width="16" height="16" viewBox="0 0 24 24" fill="currentColor" style="--sl-icon-size: 1.25rem;"><path d="m14.83 11.29-4.24-4.24a1 1 0 1 0-1.42 1.41L12.71 12l-3.54 3.54a1 1 0 0 0 0 1.41 1 1 0 0 0 .71.29 1 1 0 0 0 .71-.29l4.24-4.24a1.002 1.002 0 0 0 0-1.42Z"/></svg> </summary> <sl-sidebar-restore data-index="11" class="astro-ho4vn3za"></sl-sidebar-restore> <div class="sidebar-accordion grid grid-rows-[0fr] group-open/accordion:grid-rows-[1fr] astro-ho4vn3za"> <div class="sidebar-accordion-inner min-h-0 overflow-hidden astro-ho4vn3za"> <ul class="mt-0.5 ml-3 list-none border-l border-[var(--sidebar-border)] p-0 pl-2 astro-ho4vn3za"> <li class="break-words astro-ho4vn3za"> <a href="/agents/communication-channels/chat/chat-agents/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Chat agents</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/communication-channels/chat/autonomous-responses/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Autonomous responses</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/communication-channels/chat/client-sdk/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Client SDK</span> </a> </li> </ul> </div> </div> </details> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/communication-channels/voice/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Voice</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/communication-channels/email/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Email</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/communication-channels/slack/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Slack</span> </a> </li><li class="break-words astro-ho4vn3za"> <details class="group/accordion astro-ho4vn3za"> <summary class="group/expander flex min-h-[2.125rem] cursor-pointer items-center justify-between rounded-lg px-3 py-1.5 text-sm no-underline outline-2 outline-offset-[-2px] outline-transparent transition-colors duration-150 select-none focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 [&::-webkit-details-marker]:hidden [&::marker]:hidden hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] font-medium text-[var(--sidebar-text)] astro-ho4vn3za"> <span class="group-label astro-ho4vn3za"> <span class="astro-ho4vn3za">Webhooks</span> </span> <svg aria-hidden="true" class="caret -mr-px ml-auto shrink-0 text-base text-[var(--sidebar-text)] opacity-50 transition-transform duration-250 group-hover/expander:text-[var(--sidebar-hover-text)] astro-ho4vn3za astro-r7kprdcr" width="16" height="16" viewBox="0 0 24 24" fill="currentColor" style="--sl-icon-size: 1.25rem;"><path d="m14.83 11.29-4.24-4.24a1 1 0 1 0-1.42 1.41L12.71 12l-3.54 3.54a1 1 0 0 0 0 1.41 1 1 0 0 0 .71.29 1 1 0 0 0 .71-.29l4.24-4.24a1.002 1.002 0 0 0 0-1.42Z"/></svg> </summary> <sl-sidebar-restore data-index="12" class="astro-ho4vn3za"></sl-sidebar-restore> <div class="sidebar-accordion grid grid-rows-[0fr] group-open/accordion:grid-rows-[1fr] astro-ho4vn3za"> <div class="sidebar-accordion-inner min-h-0 overflow-hidden astro-ho4vn3za"> <ul class="mt-0.5 ml-3 list-none border-l border-[var(--sidebar-border)] p-0 pl-2 astro-ho4vn3za"> <li class="break-words astro-ho4vn3za"> <a href="/agents/communication-channels/webhooks/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za" data-group-label="Webhooks"> <span class="astro-ho4vn3za">Overview</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/communication-channels/webhooks/push-notifications/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Push notifications</span> </a> </li> </ul> </div> </div> </details> </li> </ul> </div> </div> </details> </li><li class="break-words astro-ho4vn3za"> <details class="group/accordion astro-ho4vn3za"> <summary class="group/expander flex min-h-[2.125rem] cursor-pointer items-center justify-between rounded-lg px-3 py-1.5 text-sm no-underline outline-2 outline-offset-[-2px] outline-transparent transition-colors duration-150 select-none focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 [&::-webkit-details-marker]:hidden [&::marker]:hidden hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] font-medium text-[var(--sidebar-text)] astro-ho4vn3za"> <span class="group-label astro-ho4vn3za"> <span class="large astro-ho4vn3za">Tools</span> </span> <svg aria-hidden="true" class="caret -mr-px ml-auto shrink-0 text-base text-[var(--sidebar-text)] opacity-50 transition-transform duration-250 group-hover/expander:text-[var(--sidebar-hover-text)] astro-ho4vn3za astro-r7kprdcr" width="16" height="16" viewBox="0 0 24 24" fill="currentColor" style="--sl-icon-size: 1.25rem;"><path d="m14.83 11.29-4.24-4.24a1 1 0 1 0-1.42 1.41L12.71 12l-3.54 3.54a1 1 0 0 0 0 1.41 1 1 0 0 0 .71.29 1 1 0 0 0 .71-.29l4.24-4.24a1.002 1.002 0 0 0 0-1.42Z"/></svg> </summary> <sl-sidebar-restore data-index="3" class="astro-ho4vn3za"></sl-sidebar-restore> <div class="sidebar-accordion grid grid-rows-[0fr] group-open/accordion:grid-rows-[1fr] astro-ho4vn3za"> <div class="sidebar-accordion-inner min-h-0 overflow-hidden astro-ho4vn3za"> <ul class="mt-0.5 ml-3 list-none border-l border-[var(--sidebar-border)] p-0 pl-2 astro-ho4vn3za"> <li class="break-words astro-ho4vn3za"> <a href="/agents/tools/sandbox/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Sandbox</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/tools/mcp/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">MCP</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/tools/browser/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Browser</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/tools/ai-search/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">AI Search</span> </a> </li><li class="break-words astro-ho4vn3za"> <details class="group/accordion astro-ho4vn3za"> <summary class="group/expander flex min-h-[2.125rem] cursor-pointer items-center justify-between rounded-lg px-3 py-1.5 text-sm no-underline outline-2 outline-offset-[-2px] outline-transparent transition-colors duration-150 select-none focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 [&::-webkit-details-marker]:hidden [&::marker]:hidden hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] font-medium text-[var(--sidebar-text)] astro-ho4vn3za"> <span class="group-label astro-ho4vn3za"> <span class="astro-ho4vn3za">Agentic Payments</span> </span> <svg aria-hidden="true" class="caret -mr-px ml-auto shrink-0 text-base text-[var(--sidebar-text)] opacity-50 transition-transform duration-250 group-hover/expander:text-[var(--sidebar-hover-text)] astro-ho4vn3za astro-r7kprdcr" width="16" height="16" viewBox="0 0 24 24" fill="currentColor" style="--sl-icon-size: 1.25rem;"><path d="m14.83 11.29-4.24-4.24a1 1 0 1 0-1.42 1.41L12.71 12l-3.54 3.54a1 1 0 0 0 0 1.41 1 1 0 0 0 .71.29 1 1 0 0 0 .71-.29l4.24-4.24a1.002 1.002 0 0 0 0-1.42Z"/></svg> </summary> <sl-sidebar-restore data-index="13" class="astro-ho4vn3za"></sl-sidebar-restore> <div class="sidebar-accordion grid grid-rows-[0fr] group-open/accordion:grid-rows-[1fr] astro-ho4vn3za"> <div class="sidebar-accordion-inner min-h-0 overflow-hidden astro-ho4vn3za"> <ul class="mt-0.5 ml-3 list-none border-l border-[var(--sidebar-border)] p-0 pl-2 astro-ho4vn3za"> <li class="break-words astro-ho4vn3za"> <a href="/agents/tools/payments/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za" data-group-label="Agentic Payments"> <span class="astro-ho4vn3za">Overview</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/tools/payments/mpp-charge-for-http-content/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Charge for HTTP content</span> </a> </li><li class="break-words astro-ho4vn3za"> <details class="group/accordion astro-ho4vn3za"> <summary class="group/expander flex min-h-[2.125rem] cursor-pointer items-center justify-between rounded-lg px-3 py-1.5 text-sm no-underline outline-2 outline-offset-[-2px] outline-transparent transition-colors duration-150 select-none focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 [&::-webkit-details-marker]:hidden [&::marker]:hidden hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] font-medium text-[var(--sidebar-text)] astro-ho4vn3za"> <span class="group-label astro-ho4vn3za"> <span class="astro-ho4vn3za">x402</span> </span> <svg aria-hidden="true" class="caret -mr-px ml-auto shrink-0 text-base text-[var(--sidebar-text)] opacity-50 transition-transform duration-250 group-hover/expander:text-[var(--sidebar-hover-text)] astro-ho4vn3za astro-r7kprdcr" width="16" height="16" viewBox="0 0 24 24" fill="currentColor" style="--sl-icon-size: 1.25rem;"><path d="m14.83 11.29-4.24-4.24a1 1 0 1 0-1.42 1.41L12.71 12l-3.54 3.54a1 1 0 0 0 0 1.41 1 1 0 0 0 .71.29 1 1 0 0 0 .71-.29l4.24-4.24a1.002 1.002 0 0 0 0-1.42Z"/></svg> </summary> <sl-sidebar-restore data-index="14" class="astro-ho4vn3za"></sl-sidebar-restore> <div class="sidebar-accordion grid grid-rows-[0fr] group-open/accordion:grid-rows-[1fr] astro-ho4vn3za"> <div class="sidebar-accordion-inner min-h-0 overflow-hidden astro-ho4vn3za"> <ul class="mt-0.5 ml-3 list-none border-l border-[var(--sidebar-border)] p-0 pl-2 astro-ho4vn3za"> <li class="break-words astro-ho4vn3za"> <a href="/agents/tools/payments/x402/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za" data-group-label="x402"> <span class="astro-ho4vn3za">Overview</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/tools/payments/x402/charge-for-http-content/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Charge for HTTP content</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/tools/payments/x402/charge-for-mcp-tools/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Charge for MCP tools</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/tools/payments/x402/pay-from-agents-sdk/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Pay from Agents SDK</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/tools/payments/x402/pay-with-tool-plugins/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Pay from coding tools</span> </a> </li> </ul> </div> </div> </details> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/tools/payments/mpp/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">MPP (Machine Payments Protocol)</span> </a> </li> </ul> </div> </div> </details> </li> </ul> </div> </div> </details> </li><li class="break-words astro-ho4vn3za"> <details class="group/accordion astro-ho4vn3za"> <summary class="group/expander flex min-h-[2.125rem] cursor-pointer items-center justify-between rounded-lg px-3 py-1.5 text-sm no-underline outline-2 outline-offset-[-2px] outline-transparent transition-colors duration-150 select-none focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 [&::-webkit-details-marker]:hidden [&::marker]:hidden hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] font-medium text-[var(--sidebar-text)] astro-ho4vn3za"> <span class="group-label astro-ho4vn3za"> <span class="large astro-ho4vn3za">Harnesses</span> </span> <svg aria-hidden="true" class="caret -mr-px ml-auto shrink-0 text-base text-[var(--sidebar-text)] opacity-50 transition-transform duration-250 group-hover/expander:text-[var(--sidebar-hover-text)] astro-ho4vn3za astro-r7kprdcr" width="16" height="16" viewBox="0 0 24 24" fill="currentColor" style="--sl-icon-size: 1.25rem;"><path d="m14.83 11.29-4.24-4.24a1 1 0 1 0-1.42 1.41L12.71 12l-3.54 3.54a1 1 0 0 0 0 1.41 1 1 0 0 0 .71.29 1 1 0 0 0 .71-.29l4.24-4.24a1.002 1.002 0 0 0 0-1.42Z"/></svg> </summary> <sl-sidebar-restore data-index="4" class="astro-ho4vn3za"></sl-sidebar-restore> <div class="sidebar-accordion grid grid-rows-[0fr] group-open/accordion:grid-rows-[1fr] astro-ho4vn3za"> <div class="sidebar-accordion-inner min-h-0 overflow-hidden astro-ho4vn3za"> <ul class="mt-0.5 ml-3 list-none border-l border-[var(--sidebar-border)] p-0 pl-2 astro-ho4vn3za"> <li class="break-words astro-ho4vn3za"> <a href="/agents/harnesses/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za" data-group-label="Harnesses"> <span class="astro-ho4vn3za">Overview</span> </a> </li><li class="break-words astro-ho4vn3za"> <details class="group/accordion astro-ho4vn3za"> <summary class="group/expander flex min-h-[2.125rem] cursor-pointer items-center justify-between rounded-lg px-3 py-1.5 text-sm no-underline outline-2 outline-offset-[-2px] outline-transparent transition-colors duration-150 select-none focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 [&::-webkit-details-marker]:hidden [&::marker]:hidden hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] font-medium text-[var(--sidebar-text)] astro-ho4vn3za"> <span class="group-label astro-ho4vn3za"> <span class="astro-ho4vn3za">Think</span> </span> <svg aria-hidden="true" class="caret -mr-px ml-auto shrink-0 text-base text-[var(--sidebar-text)] opacity-50 transition-transform duration-250 group-hover/expander:text-[var(--sidebar-hover-text)] astro-ho4vn3za astro-r7kprdcr" width="16" height="16" viewBox="0 0 24 24" fill="currentColor" style="--sl-icon-size: 1.25rem;"><path d="m14.83 11.29-4.24-4.24a1 1 0 1 0-1.42 1.41L12.71 12l-3.54 3.54a1 1 0 0 0 0 1.41 1 1 0 0 0 .71.29 1 1 0 0 0 .71-.29l4.24-4.24a1.002 1.002 0 0 0 0-1.42Z"/></svg> </summary> <sl-sidebar-restore data-index="15" class="astro-ho4vn3za"></sl-sidebar-restore> <div class="sidebar-accordion grid grid-rows-[0fr] group-open/accordion:grid-rows-[1fr] astro-ho4vn3za"> <div class="sidebar-accordion-inner min-h-0 overflow-hidden astro-ho4vn3za"> <ul class="mt-0.5 ml-3 list-none border-l border-[var(--sidebar-border)] p-0 pl-2 astro-ho4vn3za"> <li class="break-words astro-ho4vn3za"> <a href="/agents/harnesses/think/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za" data-group-label="Think"> <span class="astro-ho4vn3za">Overview</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/harnesses/think/getting-started/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Getting started</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/harnesses/think/configuration/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Configuration</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/harnesses/think/tools/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Tools</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/harnesses/think/lifecycle-hooks/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Lifecycle hooks</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/harnesses/think/client-tools/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Client tools</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/harnesses/think/messengers/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Messengers</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/harnesses/think/scheduled-tasks/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Scheduled tasks</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/harnesses/think/workflows/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Workflows</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/harnesses/think/sub-agents/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Sub-agent RPC and programmatic turns</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/harnesses/think/programmatic-submissions/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Programmatic submissions</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/harnesses/think/recovery/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Durable recovery</span> </a> </li> </ul> </div> </div> </details> </li> </ul> </div> </div> </details> </li><li class="break-words astro-ho4vn3za"> <details class="group/accordion astro-ho4vn3za"> <summary class="group/expander flex min-h-[2.125rem] cursor-pointer items-center justify-between rounded-lg px-3 py-1.5 text-sm no-underline outline-2 outline-offset-[-2px] outline-transparent transition-colors duration-150 select-none focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 [&::-webkit-details-marker]:hidden [&::marker]:hidden hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] font-medium text-[var(--sidebar-text)] astro-ho4vn3za"> <span class="group-label astro-ho4vn3za"> <span class="large astro-ho4vn3za">Runtime</span> </span> <svg aria-hidden="true" class="caret -mr-px ml-auto shrink-0 text-base text-[var(--sidebar-text)] opacity-50 transition-transform duration-250 group-hover/expander:text-[var(--sidebar-hover-text)] astro-ho4vn3za astro-r7kprdcr" width="16" height="16" viewBox="0 0 24 24" fill="currentColor" style="--sl-icon-size: 1.25rem;"><path d="m14.83 11.29-4.24-4.24a1 1 0 1 0-1.42 1.41L12.71 12l-3.54 3.54a1 1 0 0 0 0 1.41 1 1 0 0 0 .71.29 1 1 0 0 0 .71-.29l4.24-4.24a1.002 1.002 0 0 0 0-1.42Z"/></svg> </summary> <sl-sidebar-restore data-index="5" class="astro-ho4vn3za"></sl-sidebar-restore> <div class="sidebar-accordion grid grid-rows-[0fr] group-open/accordion:grid-rows-[1fr] astro-ho4vn3za"> <div class="sidebar-accordion-inner min-h-0 overflow-hidden astro-ho4vn3za"> <ul class="mt-0.5 ml-3 list-none border-l border-[var(--sidebar-border)] p-0 pl-2 astro-ho4vn3za"> <li class="break-words astro-ho4vn3za"> <a href="/agents/runtime/agents-api/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Agents API</span> </a> </li><li class="break-words astro-ho4vn3za"> <details class="group/accordion astro-ho4vn3za"> <summary class="group/expander flex min-h-[2.125rem] cursor-pointer items-center justify-between rounded-lg px-3 py-1.5 text-sm no-underline outline-2 outline-offset-[-2px] outline-transparent transition-colors duration-150 select-none focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 [&::-webkit-details-marker]:hidden [&::marker]:hidden hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] font-medium text-[var(--sidebar-text)] astro-ho4vn3za"> <span class="group-label astro-ho4vn3za"> <span class="astro-ho4vn3za">Lifecycle</span> </span> <svg aria-hidden="true" class="caret -mr-px ml-auto shrink-0 text-base text-[var(--sidebar-text)] opacity-50 transition-transform duration-250 group-hover/expander:text-[var(--sidebar-hover-text)] astro-ho4vn3za astro-r7kprdcr" width="16" height="16" viewBox="0 0 24 24" fill="currentColor" style="--sl-icon-size: 1.25rem;"><path d="m14.83 11.29-4.24-4.24a1 1 0 1 0-1.42 1.41L12.71 12l-3.54 3.54a1 1 0 0 0 0 1.41 1 1 0 0 0 .71.29 1 1 0 0 0 .71-.29l4.24-4.24a1.002 1.002 0 0 0 0-1.42Z"/></svg> </summary> <sl-sidebar-restore data-index="16" class="astro-ho4vn3za"></sl-sidebar-restore> <div class="sidebar-accordion grid grid-rows-[0fr] group-open/accordion:grid-rows-[1fr] astro-ho4vn3za"> <div class="sidebar-accordion-inner min-h-0 overflow-hidden astro-ho4vn3za"> <ul class="mt-0.5 ml-3 list-none border-l border-[var(--sidebar-border)] p-0 pl-2 astro-ho4vn3za"> <li class="break-words astro-ho4vn3za"> <a href="/agents/runtime/lifecycle/agent-class/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Agent class internals</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/runtime/lifecycle/callable-methods/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Callable methods</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/runtime/lifecycle/state/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Store and sync state</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/runtime/lifecycle/sessions/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Sessions</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/runtime/lifecycle/get-current-agent/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">getCurrentAgent()</span> </a> </li> </ul> </div> </div> </details> </li><li class="break-words astro-ho4vn3za"> <details class="group/accordion astro-ho4vn3za"> <summary class="group/expander flex min-h-[2.125rem] cursor-pointer items-center justify-between rounded-lg px-3 py-1.5 text-sm no-underline outline-2 outline-offset-[-2px] outline-transparent transition-colors duration-150 select-none focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 [&::-webkit-details-marker]:hidden [&::marker]:hidden hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] font-medium text-[var(--sidebar-text)] astro-ho4vn3za"> <span class="group-label astro-ho4vn3za"> <span class="astro-ho4vn3za">Communication</span> </span> <svg aria-hidden="true" class="caret -mr-px ml-auto shrink-0 text-base text-[var(--sidebar-text)] opacity-50 transition-transform duration-250 group-hover/expander:text-[var(--sidebar-hover-text)] astro-ho4vn3za astro-r7kprdcr" width="16" height="16" viewBox="0 0 24 24" fill="currentColor" style="--sl-icon-size: 1.25rem;"><path d="m14.83 11.29-4.24-4.24a1 1 0 1 0-1.42 1.41L12.71 12l-3.54 3.54a1 1 0 0 0 0 1.41 1 1 0 0 0 .71.29 1 1 0 0 0 .71-.29l4.24-4.24a1.002 1.002 0 0 0 0-1.42Z"/></svg> </summary> <sl-sidebar-restore data-index="17" class="astro-ho4vn3za"></sl-sidebar-restore> <div class="sidebar-accordion grid grid-rows-[0fr] group-open/accordion:grid-rows-[1fr] astro-ho4vn3za"> <div class="sidebar-accordion-inner min-h-0 overflow-hidden astro-ho4vn3za"> <ul class="mt-0.5 ml-3 list-none border-l border-[var(--sidebar-border)] p-0 pl-2 astro-ho4vn3za"> <li class="break-words astro-ho4vn3za"> <a href="/agents/runtime/communication/routing/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Routing</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/runtime/communication/websockets/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">WebSockets</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/runtime/communication/http-sse/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">HTTP and Server-Sent Events</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/runtime/communication/chat-sdk/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Chat SDK</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/runtime/communication/protocol-messages/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Protocol messages</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/runtime/communication/readonly-connections/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Readonly connections</span> </a> </li> </ul> </div> </div> </details> </li><li class="break-words astro-ho4vn3za"> <details class="group/accordion astro-ho4vn3za"> <summary class="group/expander flex min-h-[2.125rem] cursor-pointer items-center justify-between rounded-lg px-3 py-1.5 text-sm no-underline outline-2 outline-offset-[-2px] outline-transparent transition-colors duration-150 select-none focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 [&::-webkit-details-marker]:hidden [&::marker]:hidden hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] font-medium text-[var(--sidebar-text)] astro-ho4vn3za"> <span class="group-label astro-ho4vn3za"> <span class="astro-ho4vn3za">Execution</span> </span> <svg aria-hidden="true" class="caret -mr-px ml-auto shrink-0 text-base text-[var(--sidebar-text)] opacity-50 transition-transform duration-250 group-hover/expander:text-[var(--sidebar-hover-text)] astro-ho4vn3za astro-r7kprdcr" width="16" height="16" viewBox="0 0 24 24" fill="currentColor" style="--sl-icon-size: 1.25rem;"><path d="m14.83 11.29-4.24-4.24a1 1 0 1 0-1.42 1.41L12.71 12l-3.54 3.54a1 1 0 0 0 0 1.41 1 1 0 0 0 .71.29 1 1 0 0 0 .71-.29l4.24-4.24a1.002 1.002 0 0 0 0-1.42Z"/></svg> </summary> <sl-sidebar-restore data-index="18" class="astro-ho4vn3za"></sl-sidebar-restore> <div class="sidebar-accordion grid grid-rows-[0fr] group-open/accordion:grid-rows-[1fr] astro-ho4vn3za"> <div class="sidebar-accordion-inner min-h-0 overflow-hidden astro-ho4vn3za"> <ul class="mt-0.5 ml-3 list-none border-l border-[var(--sidebar-border)] p-0 pl-2 astro-ho4vn3za"> <li class="break-words astro-ho4vn3za"> <a href="/agents/runtime/execution/sub-agents/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Sub-agents</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/runtime/execution/schedule-tasks/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Schedule tasks</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/runtime/execution/durable-execution/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Durable execution with fibers</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/runtime/execution/queue-tasks/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Queue tasks</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/runtime/execution/retries/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Retries</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/runtime/execution/run-workflows/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Run Workflows</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/runtime/execution/agent-tools/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Agents as tools</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/runtime/execution/agent-skills/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Agent Skills</span> </a> </li> </ul> </div> </div> </details> </li><li class="break-words astro-ho4vn3za"> <details class="group/accordion astro-ho4vn3za"> <summary class="group/expander flex min-h-[2.125rem] cursor-pointer items-center justify-between rounded-lg px-3 py-1.5 text-sm no-underline outline-2 outline-offset-[-2px] outline-transparent transition-colors duration-150 select-none focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 [&::-webkit-details-marker]:hidden [&::marker]:hidden hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] font-medium text-[var(--sidebar-text)] astro-ho4vn3za"> <span class="group-label astro-ho4vn3za"> <span class="astro-ho4vn3za">Operations</span> </span> <svg aria-hidden="true" class="caret -mr-px ml-auto shrink-0 text-base text-[var(--sidebar-text)] opacity-50 transition-transform duration-250 group-hover/expander:text-[var(--sidebar-hover-text)] astro-ho4vn3za astro-r7kprdcr" width="16" height="16" viewBox="0 0 24 24" fill="currentColor" style="--sl-icon-size: 1.25rem;"><path d="m14.83 11.29-4.24-4.24a1 1 0 1 0-1.42 1.41L12.71 12l-3.54 3.54a1 1 0 0 0 0 1.41 1 1 0 0 0 .71.29 1 1 0 0 0 .71-.29l4.24-4.24a1.002 1.002 0 0 0 0-1.42Z"/></svg> </summary> <sl-sidebar-restore data-index="19" class="astro-ho4vn3za"></sl-sidebar-restore> <div class="sidebar-accordion grid grid-rows-[0fr] group-open/accordion:grid-rows-[1fr] astro-ho4vn3za"> <div class="sidebar-accordion-inner min-h-0 overflow-hidden astro-ho4vn3za"> <ul class="mt-0.5 ml-3 list-none border-l border-[var(--sidebar-border)] p-0 pl-2 astro-ho4vn3za"> <li class="break-words astro-ho4vn3za"> <a href="/agents/runtime/operations/configuration/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Configuration</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/runtime/operations/cross-domain-authentication/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Cross-domain authentication</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/runtime/operations/using-ai-models/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Using AI Models</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/runtime/operations/observability/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Observability</span> </a> </li> </ul> </div> </div> </details> </li> </ul> </div> </div> </details> </li><li class="break-words astro-ho4vn3za"> <details class="group/accordion astro-ho4vn3za" open> <summary class="group/expander flex min-h-[2.125rem] cursor-pointer items-center justify-between rounded-lg px-3 py-1.5 text-sm no-underline outline-2 outline-offset-[-2px] outline-transparent transition-colors duration-150 select-none focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 [&::-webkit-details-marker]:hidden [&::marker]:hidden hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] font-semibold text-[var(--sidebar-text-strong)] astro-ho4vn3za"> <span class="group-label astro-ho4vn3za"> <span class="large astro-ho4vn3za">Examples</span> </span> <svg aria-hidden="true" class="caret -mr-px ml-auto shrink-0 text-base text-[var(--sidebar-text)] opacity-50 transition-transform duration-250 group-hover/expander:text-[var(--sidebar-hover-text)] astro-ho4vn3za astro-r7kprdcr" width="16" height="16" viewBox="0 0 24 24" fill="currentColor" style="--sl-icon-size: 1.25rem;"><path d="m14.83 11.29-4.24-4.24a1 1 0 1 0-1.42 1.41L12.71 12l-3.54 3.54a1 1 0 0 0 0 1.41 1 1 0 0 0 .71.29 1 1 0 0 0 .71-.29l4.24-4.24a1.002 1.002 0 0 0 0-1.42Z"/></svg> </summary> <sl-sidebar-restore data-index="6" class="astro-ho4vn3za"></sl-sidebar-restore> <div class="sidebar-accordion grid grid-rows-[0fr] group-open/accordion:grid-rows-[1fr] astro-ho4vn3za"> <div class="sidebar-accordion-inner min-h-0 overflow-hidden astro-ho4vn3za"> <ul class="mt-0.5 ml-3 list-none border-l border-[var(--sidebar-border)] p-0 pl-2 astro-ho4vn3za"> <li class="break-words astro-ho4vn3za"> <a href="/agents/examples/chat-agent/" aria-current="page" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 !bg-[var(--sidebar-active-bg)] !font-semibold !text-[var(--sidebar-active-text)] transition-colors duration-150 hover:!bg-[color:var(--sidebar-active-bg)]/80 astro-ho4vn3za"> <span class="astro-ho4vn3za">Chat agent</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/examples/slack-agent/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Slack agent</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/examples/voice-agent/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Voice agent</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/examples/browser-agent/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Browser agent</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/examples/email-agent/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Email agent</span> </a> </li> </ul> </div> </div> </details> </li><li class="break-words astro-ho4vn3za"> <details class="group/accordion astro-ho4vn3za"> <summary class="group/expander flex min-h-[2.125rem] cursor-pointer items-center justify-between rounded-lg px-3 py-1.5 text-sm no-underline outline-2 outline-offset-[-2px] outline-transparent transition-colors duration-150 select-none focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 [&::-webkit-details-marker]:hidden [&::marker]:hidden hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] font-medium text-[var(--sidebar-text)] astro-ho4vn3za"> <span class="group-label astro-ho4vn3za"> <span class="large astro-ho4vn3za">Model Context Protocol (MCP)</span> </span> <svg aria-hidden="true" class="caret -mr-px ml-auto shrink-0 text-base text-[var(--sidebar-text)] opacity-50 transition-transform duration-250 group-hover/expander:text-[var(--sidebar-hover-text)] astro-ho4vn3za astro-r7kprdcr" width="16" height="16" viewBox="0 0 24 24" fill="currentColor" style="--sl-icon-size: 1.25rem;"><path d="m14.83 11.29-4.24-4.24a1 1 0 1 0-1.42 1.41L12.71 12l-3.54 3.54a1 1 0 0 0 0 1.41 1 1 0 0 0 .71.29 1 1 0 0 0 .71-.29l4.24-4.24a1.002 1.002 0 0 0 0-1.42Z"/></svg> </summary> <sl-sidebar-restore data-index="7" class="astro-ho4vn3za"></sl-sidebar-restore> <div class="sidebar-accordion grid grid-rows-[0fr] group-open/accordion:grid-rows-[1fr] astro-ho4vn3za"> <div class="sidebar-accordion-inner min-h-0 overflow-hidden astro-ho4vn3za"> <ul class="mt-0.5 ml-3 list-none border-l border-[var(--sidebar-border)] p-0 pl-2 astro-ho4vn3za"> <li class="break-words astro-ho4vn3za"> <a href="/agents/model-context-protocol/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za" data-group-label="Model Context Protocol (MCP)"> <span class="astro-ho4vn3za">Overview</span> </a> </li><li class="break-words astro-ho4vn3za"> <details class="group/accordion astro-ho4vn3za"> <summary class="group/expander flex min-h-[2.125rem] cursor-pointer items-center justify-between rounded-lg px-3 py-1.5 text-sm no-underline outline-2 outline-offset-[-2px] outline-transparent transition-colors duration-150 select-none focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 [&::-webkit-details-marker]:hidden [&::marker]:hidden hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] font-medium text-[var(--sidebar-text)] astro-ho4vn3za"> <span class="group-label astro-ho4vn3za"> <span class="astro-ho4vn3za">APIs</span> </span> <svg aria-hidden="true" class="caret -mr-px ml-auto shrink-0 text-base text-[var(--sidebar-text)] opacity-50 transition-transform duration-250 group-hover/expander:text-[var(--sidebar-hover-text)] astro-ho4vn3za astro-r7kprdcr" width="16" height="16" viewBox="0 0 24 24" fill="currentColor" style="--sl-icon-size: 1.25rem;"><path d="m14.83 11.29-4.24-4.24a1 1 0 1 0-1.42 1.41L12.71 12l-3.54 3.54a1 1 0 0 0 0 1.41 1 1 0 0 0 .71.29 1 1 0 0 0 .71-.29l4.24-4.24a1.002 1.002 0 0 0 0-1.42Z"/></svg> </summary> <sl-sidebar-restore data-index="20" class="astro-ho4vn3za"></sl-sidebar-restore> <div class="sidebar-accordion grid grid-rows-[0fr] group-open/accordion:grid-rows-[1fr] astro-ho4vn3za"> <div class="sidebar-accordion-inner min-h-0 overflow-hidden astro-ho4vn3za"> <ul class="mt-0.5 ml-3 list-none border-l border-[var(--sidebar-border)] p-0 pl-2 astro-ho4vn3za"> <li class="break-words astro-ho4vn3za"> <a href="/agents/model-context-protocol/apis/handler-api/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">createMcpHandler</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/model-context-protocol/apis/agent-api/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">McpAgent</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/model-context-protocol/apis/client-api/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">McpClient</span> </a> </li> </ul> </div> </div> </details> </li><li class="break-words astro-ho4vn3za"> <details class="group/accordion astro-ho4vn3za"> <summary class="group/expander flex min-h-[2.125rem] cursor-pointer items-center justify-between rounded-lg px-3 py-1.5 text-sm no-underline outline-2 outline-offset-[-2px] outline-transparent transition-colors duration-150 select-none focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 [&::-webkit-details-marker]:hidden [&::marker]:hidden hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] font-medium text-[var(--sidebar-text)] astro-ho4vn3za"> <span class="group-label astro-ho4vn3za"> <span class="astro-ho4vn3za">Protocol</span> </span> <svg aria-hidden="true" class="caret -mr-px ml-auto shrink-0 text-base text-[var(--sidebar-text)] opacity-50 transition-transform duration-250 group-hover/expander:text-[var(--sidebar-hover-text)] astro-ho4vn3za astro-r7kprdcr" width="16" height="16" viewBox="0 0 24 24" fill="currentColor" style="--sl-icon-size: 1.25rem;"><path d="m14.83 11.29-4.24-4.24a1 1 0 1 0-1.42 1.41L12.71 12l-3.54 3.54a1 1 0 0 0 0 1.41 1 1 0 0 0 .71.29 1 1 0 0 0 .71-.29l4.24-4.24a1.002 1.002 0 0 0 0-1.42Z"/></svg> </summary> <sl-sidebar-restore data-index="21" class="astro-ho4vn3za"></sl-sidebar-restore> <div class="sidebar-accordion grid grid-rows-[0fr] group-open/accordion:grid-rows-[1fr] astro-ho4vn3za"> <div class="sidebar-accordion-inner min-h-0 overflow-hidden astro-ho4vn3za"> <ul class="mt-0.5 ml-3 list-none border-l border-[var(--sidebar-border)] p-0 pl-2 astro-ho4vn3za"> <li class="break-words astro-ho4vn3za"> <a href="/agents/model-context-protocol/protocol/tools/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Tools</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/model-context-protocol/protocol/authorization/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Authorization</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/model-context-protocol/protocol/transport/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Transport</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/model-context-protocol/protocol/codemode/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Codemode</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/model-context-protocol/protocol/governance/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">MCP governance</span> </a> </li> </ul> </div> </div> </details> </li><li class="break-words astro-ho4vn3za"> <details class="group/accordion astro-ho4vn3za"> <summary class="group/expander flex min-h-[2.125rem] cursor-pointer items-center justify-between rounded-lg px-3 py-1.5 text-sm no-underline outline-2 outline-offset-[-2px] outline-transparent transition-colors duration-150 select-none focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 [&::-webkit-details-marker]:hidden [&::marker]:hidden hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] font-medium text-[var(--sidebar-text)] astro-ho4vn3za"> <span class="group-label astro-ho4vn3za"> <span class="astro-ho4vn3za">Guides</span> </span> <svg aria-hidden="true" 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hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Securing MCP servers</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/model-context-protocol/guides/connect-mcp-client/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Connect to an MCP server</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/model-context-protocol/guides/oauth-mcp-client/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za"> <span class="astro-ho4vn3za">Handle OAuth with MCP servers</span> </a> </li> </ul> </div> </div> </details> </li><li class="break-words astro-ho4vn3za"> <details class="group/accordion astro-ho4vn3za"> <summary class="group/expander flex min-h-[2.125rem] cursor-pointer items-center justify-between rounded-lg px-3 py-1.5 text-sm no-underline outline-2 outline-offset-[-2px] outline-transparent transition-colors duration-150 select-none focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 [&::-webkit-details-marker]:hidden [&::marker]:hidden hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] font-medium text-[var(--sidebar-text)] astro-ho4vn3za"> <span class="group-label astro-ho4vn3za"> <span class="astro-ho4vn3za">Cloudflare</span> </span> <svg aria-hidden="true" class="caret -mr-px 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class="break-words astro-ho4vn3za"> <a href="/agents/model-context-protocol/cloudflare/servers-for-cloudflare/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 hover:bg-[color:var(--sidebar-hover-bg)]/80 hover:text-[var(--sidebar-hover-text)] astro-ho4vn3za" data-group-label="Cloudflare's own MCP servers"> <span class="astro-ho4vn3za">Overview</span> </a> </li><li class="break-words astro-ho4vn3za"> <a href="/agents/model-context-protocol/cloudflare/servers-for-cloudflare/community-mcp-server/" class="flex min-h-[2.125rem] items-start rounded-lg px-3 py-1.5 text-sm font-medium no-underline outline-2 outline-offset-[-2px] outline-transparent focus-visible:outline-blue-500 dark:focus-visible:outline-blue-400 text-[var(--sidebar-text)] transition-colors duration-150 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0;"> <li class="astro-n5w67532" style="--depth: 0;"> <a href="#_top" class="astro-n5w67532" style="--depth: 0;"> <span class="astro-n5w67532" style="--depth: 0;">Overview</span> </a> </li><li class="astro-n5w67532" style="--depth: 0;"> <a href="#1-create-the-project" class="astro-n5w67532" style="--depth: 0;"> <span class="astro-n5w67532" style="--depth: 0;">1. Create the project</span> </a> </li><li class="astro-n5w67532" style="--depth: 0;"> <a href="#2-configure-wrangler" class="astro-n5w67532" style="--depth: 0;"> <span class="astro-n5w67532" style="--depth: 0;">2. Configure Wrangler</span> </a> </li><li class="astro-n5w67532" style="--depth: 0;"> <a href="#3-write-the-server" class="astro-n5w67532" style="--depth: 0;"> <span class="astro-n5w67532" style="--depth: 0;">3. Write the server</span> </a> <ul class="isMobile astro-n5w67532" style="--depth: 1;"> <li class="astro-n5w67532" style="--depth: 1;"> <a href="#what-each-tool-type-does" class="astro-n5w67532" style="--depth: 1;"> <span class="astro-n5w67532" style="--depth: 1;">What each tool type does</span> </a> </li> </ul> </li><li class="astro-n5w67532" style="--depth: 0;"> <a href="#4-write-the-client" class="astro-n5w67532" style="--depth: 0;"> <span class="astro-n5w67532" style="--depth: 0;">4. 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Create the project</span> </a> </li><li class="astro-n5w67532" style="--depth: 0;"> <a href="#2-configure-wrangler" class="astro-n5w67532" style="--depth: 0;"> <span class="astro-n5w67532" style="--depth: 0;">2. Configure Wrangler</span> </a> </li><li class="astro-n5w67532" style="--depth: 0;"> <a href="#3-write-the-server" class="astro-n5w67532" style="--depth: 0;"> <span class="astro-n5w67532" style="--depth: 0;">3. Write the server</span> </a> <ul class="astro-n5w67532" style="--depth: 1;"> <li class="astro-n5w67532" style="--depth: 1;"> <a href="#what-each-tool-type-does" class="astro-n5w67532" style="--depth: 1;"> <span class="astro-n5w67532" style="--depth: 1;">What each tool type does</span> </a> </li> </ul> </li><li class="astro-n5w67532" style="--depth: 0;"> <a href="#4-write-the-client" class="astro-n5w67532" style="--depth: 0;"> <span class="astro-n5w67532" style="--depth: 0;">4. Write the client</span> </a> <ul class="astro-n5w67532" style="--depth: 1;"> <li class="astro-n5w67532" style="--depth: 1;"> <a href="#key-client-concepts" class="astro-n5w67532" style="--depth: 1;"> <span class="astro-n5w67532" style="--depth: 1;">Key client concepts</span> </a> </li> </ul> </li><li class="astro-n5w67532" style="--depth: 0;"> <a href="#5-run-locally" class="astro-n5w67532" style="--depth: 0;"> <span class="astro-n5w67532" style="--depth: 0;">5. Run locally</span> </a> </li><li class="astro-n5w67532" style="--depth: 0;"> <a href="#6-deploy" class="astro-n5w67532" style="--depth: 0;"> <span class="astro-n5w67532" style="--depth: 0;">6. 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this.dataset)||!e||(this.breadcrumbs=document.getElementById(e),this.initializeCrumbs(),this.setupResizeObserver())}initializeCrumbs(){this.breadcrumbs?.querySelectorAll(.${this.mainBemClass}__crumb)?.forEach(s=>{this.totalWidth+=s.offsetWidth})}setupResizeObserver(){this.resizeObserver=new ResizeObserver(e=>{e.forEach(s=>{this.checkOverflow(s.target.clientWidth)})}),this.breadcrumbs&&this.resizeObserver.observe(this.breadcrumbs)}connectedCallback(){this.showHiddenCrumbs()}disconnectedCallback(){this.resizeObserver&&this.breadcrumbs&&(this.resizeObserver.unobserve(this.breadcrumbs),this.resizeObserver.disconnect())}toggleTruncated(e){this.breadcrumbs?.classList.toggle("is-truncated",e)}showHiddenCrumbs(){const e=this.breadcrumbs?.querySelector(.${this.mainBemClass}__truncated-button);e?.removeEventListener("click",this.handleTruncatedButtonClick),e?.addEventListener("click",this.handleTruncatedButtonClick.bind(this))}checkOverflow(e){const s=this.totalWidth>e&&!this.isManualToggle;this.toggleTruncated(s),s||(this.isManualToggle=!1)}}customElements.get("astro-breadcrumbs")||customElements.define("astro-breadcrumbs",t);</script> </div> <h1 id="_top" class="astro-k7rnyr65">Chat agent</h1> <div class="page-actions-wrapper astro-couag5ji"> <nav class="page-actions astro-jjhxq4hj" aria-label="Page actions"> <!-- Copy as Markdown --> <button class="not-content astro-jjhxq4hj" id="page-actions-copy" aria-label="Copy Page as Markdown"> <svg class="copy-icon astro-jjhxq4hj" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" viewBox="0 0 256 256" fill="currentColor"><path d="M216,34H88a6,6,0,0,0-6,6V82H40a6,6,0,0,0-6,6V216a6,6,0,0,0,6,6H168a6,6,0,0,0,6-6V174h42a6,6,0,0,0,6-6V40A6,6,0,0,0,216,34ZM162,210H46V94H162Zm48-48H174V88a6,6,0,0,0-6-6H94V46H210Z"/></svg> <svg class="check-icon astro-jjhxq4hj" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" viewBox="0 0 256 256" fill="currentColor"><path d="M172.24,99.76a6,6,0,0,1,0,8.48l-56,56a6,6,0,0,1-8.48,0l-24-24a6,6,0,0,1,8.48-8.48L112,151.51l51.76-51.75A6,6,0,0,1,172.24,99.76ZM230,128A102,102,0,1,1,128,26,102.12,102.12,0,0,1,230,128Zm-12,0a90,90,0,1,0-90,90A90.1,90.1,0,0,0,218,128Z"/></svg> <span class="label-wrap astro-jjhxq4hj"> <span class="label astro-jjhxq4hj">Copy as Markdown</span> <span class="copied-label astro-jjhxq4hj" aria-hidden="true">Copied!</span> </span> </button> <span class="sep astro-jjhxq4hj" aria-hidden="true">|</span> <!-- View as Markdown (anchor so browser opens natively and respects OS color scheme) --> <a class="not-content astro-jjhxq4hj" id="page-actions-view-md" aria-label="View Page as Markdown" href="index.md" target="_blank" rel="noopener noreferrer"> <svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" viewBox="0 0 256 256" fill="currentColor" class="astro-jjhxq4hj"><path d="M232,50H24A14,14,0,0,0,10,64V192a14,14,0,0,0,14,14H232a14,14,0,0,0,14-14V64A14,14,0,0,0,232,50Zm2,142a2,2,0,0,1-2,2H24a2,2,0,0,1-2-2V64a2,2,0,0,1,2-2H232a2,2,0,0,1,2,2ZM126,104v48a6,6,0,0,1-12,0V118.49L92.24,140.24a6,6,0,0,1-8.48,0L62,118.49V152a6,6,0,0,1-12,0V104a6,6,0,0,1,10.24-4.24L88,127.51l27.76-27.75A6,6,0,0,1,126,104Zm78.24,19.76a6,6,0,0,1,0,8.48l-24,24a6,6,0,0,1-8.48,0l-24-24a6,6,0,1,1,8.48-8.48L170,137.51V104a6,6,0,0,1,12,0v33.51l13.76-13.75A6,6,0,0,1,204.24,123.76Z"/></svg> <span class="astro-jjhxq4hj">View as Markdown</span> </a> <span class="sep sep-agent-setup astro-jjhxq4hj" aria-hidden="true">|</span> <!-- Agent setup --> <button class="not-content astro-jjhxq4hj" id="page-actions-agent-setup" data-tooltip="Setup your agent to build on Cloudflare" aria-label="Setup your agent to build on Cloudflare"> <svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" viewBox="0 0 256 256" fill="currentColor" class="astro-jjhxq4hj"><path d="M200,50H134V16a6,6,0,0,0-12,0V50H56A30,30,0,0,0,26,80V192a30,30,0,0,0,30,30H200a30,30,0,0,0,30-30V80A30,30,0,0,0,200,50Zm18,142a18,18,0,0,1-18,18H56a18,18,0,0,1-18-18V80A18,18,0,0,1,56,62H200a18,18,0,0,1,18,18ZM74,108a10,10,0,1,1,10,10A10,10,0,0,1,74,108Zm88,0a10,10,0,1,1,10,10A10,10,0,0,1,162,108Zm2,30H92a26,26,0,0,0,0,52h72a26,26,0,0,0,0-52Zm-22,12v28H114V150ZM78,164a14,14,0,0,1,14-14h10v28H92A14,14,0,0,1,78,164Zm86,14H154V150h10a14,14,0,0,1,0,28Z"/></svg> <span class="astro-jjhxq4hj">Agent setup</span> </button> <span class="sep sep-docs-for-agents astro-jjhxq4hj" aria-hidden="true">|</span> <!-- Docs for agents --> <button class="not-content astro-jjhxq4hj" id="page-actions-docs-for-agents" data-tooltip="Consume Cloudflare Docs with your agent" aria-label="Consume Cloudflare Docs with your agent"> <svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" viewBox="0 0 256 256" fill="currentColor" class="astro-jjhxq4hj"><path d="M98,136a6,6,0,0,1,6-6h64a6,6,0,0,1,0,12H104A6,6,0,0,1,98,136Zm6-26h64a6,6,0,0,0,0-12H104a6,6,0,0,0,0,12Zm126,82a30,30,0,0,1-30,30H88a30,30,0,0,1-30-30V64a18,18,0,0,0-36,0c0,6.76,5.58,11.19,5.64,11.23A6,6,0,1,1,20.4,84.8C20,84.48,10,76.85,10,64A30,30,0,0,1,40,34H176a30,30,0,0,1,30,30V170h10a6,6,0,0,1,3.6,1.2C220,171.52,230,179.15,230,192Zm-124,0c0-6.76-5.59-11.19-5.64-11.23A6,6,0,0,1,104,170h90V64a18,18,0,0,0-18-18H64a29.82,29.82,0,0,1,6,18V192a18,18,0,0,0,36,0Zm112,0a14.94,14.94,0,0,0-4.34-10H115.88A24.83,24.83,0,0,1,118,192a29.87,29.87,0,0,1-6,18h88A18,18,0,0,0,218,192Z"/></svg> <span class="astro-jjhxq4hj">Docs for agents</span> </button> </nav> <script type="module" src="/_astro/PageActions.astro_astro_type_script_index_0_lang.CsW5BfyZ.js"></script> </div> </div> </div> <div class="content-panel astro-k65j6qoy"> <div class="sl-container astro-k65j6qoy"> <starlight-image-zoom> <template class="astro-xymfvnz4"> <dialog class="starlight-image-zoom-dialog astro-xymfvnz4"> <button aria-label="Unzoom image" class="starlight-image-zoom-control astro-xymfvnz4"> <svg aria-hidden="true" fill="currentColor" viewBox="0 0 24 24" class="astro-xymfvnz4"> <use href="#starlight-image-zoom-icon-unzoom" class="astro-xymfvnz4"></use> </svg> </button> <figure class="astro-xymfvnz4"></figure> </dialog> </template> <svg xmlns="http://www.w3.org/2000/svg" style="display:none" class="astro-xymfvnz4"> <symbol id="starlight-image-zoom-icon-zoom" viewBox="0 0 24 24" class="astro-xymfvnz4"> <path d="M9.79 12.79 4 18.59V17a1 1 0 0 0-2 0v4a1 1 0 0 0 .08.38 1 1 0 0 0 .54.54A1 1 0 0 0 3 22h4a1 1 0 0 0 0-2H5.41l5.8-5.79a1 1 0 0 0-1.42-1.42ZM21.92 2.62a1 1 0 0 0-.54-.54A1 1 0 0 0 21 2h-4a1 1 0 0 0 0 2h1.59l-5.8 5.79a1 1 0 0 0 0 1.42 1 1 0 0 0 1.42 0L20 5.41V7a1 1 0 0 0 2 0V3a1 1 0 0 0-.08-.38Z" class="astro-xymfvnz4"></path> </symbol> <symbol id="starlight-image-zoom-icon-unzoom" viewBox="0 0 24 24" class="astro-xymfvnz4"> <path d="M21.71 2.29a1 1 0 0 0-1.42 0l-5.79 5.8V6.5a1 1 0 0 0-2 0v4a1 1 0 0 0 .08.38 1 1 0 0 0 .54.54 1 1 0 0 0 .38.08h4a1 1 0 0 0 0-2h-1.59l5.8-5.79a1 1 0 0 0 0-1.42ZM10.88 12.58a1 1 0 0 0-.38-.08h-4a1 1 0 0 0 0 2h1.59l-5.8 5.79a1 1 0 0 0 0 1.42 1 1 0 0 0 1.42 0l5.79-5.8v1.59a1 1 0 0 0 2 0v-4a1 1 0 0 0-.08-.38 1 1 0 0 0-.54-.54Z" class="astro-xymfvnz4"></path> </symbol> </svg> </starlight-image-zoom> <script type="module" src="/_astro/ImageZoom.astro_astro_type_script_index_0_lang.CZmBqK-T.js"></script> <div class="sl-markdown-content astro-cedpceuv"> <p>Build a chat agent that streams AI responses, calls server-side tools, executes client-side tools in the browser, and asks for user approval before sensitive actions.</p> <p><strong>What you will build:</strong> A chat agent powered by Workers AI with three tool types — automatic, client-side, and approval-gated.</p> <p><strong>Time:</strong> ~15 minutes</p> <p>This tutorial starts from a minimal Hello World Worker so you can see each moving part. If you want a complete starter app with the same core pieces already wired together, start with the <a href="/agents/getting-started/quick-start/">quick start</a> and then return here to understand how the chat pieces fit together.</p> <p><strong>Prerequisites:</strong></p> <ul> <li>Node.js 18+</li> <li>A Cloudflare account (free tier works)</li> </ul> <div tabindex="-1" class="heading-wrapper level-h2"><h2 id="1-create-the-project">1. Create the project</h2><a class="anchor-link" href="#1-create-the-project"><span aria-hidden="true" class="anchor-icon"><svg width="16" height="16" viewBox="0 0 24 24"><path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z"></path></svg></span></a></div> <div class="expressive-code"><link rel="stylesheet" href="/_astro/ec.7rqu9.css"><script type="module" src="/_astro/ec.0vx5m.js"></script><figure class="frame is-terminal not-content"><figcaption class="header"><span class="title"></span><span class="sr-only">Terminal window</span></figcaption><pre data-language="sh"><code><div class="ec-line"><div class="code"><span style="--0:#57C78F;--1:#00783C">npm</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">create</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">cloudflare@latest</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">chat-agent</span></div></div></code></pre><div class="copy"><div aria-live="polite"></div><button data-copied="Copied!" data-code="npm create cloudflare@latest chat-agent"><div></div></button></div></figure></div> <p>Select <strong>"Hello World" Worker</strong> when prompted. Then install the dependencies:</p> <div class="expressive-code"><figure class="frame is-terminal not-content"><figcaption class="header"><span class="title"></span><span class="sr-only">Terminal window</span></figcaption><pre data-language="sh"><code><div class="ec-line"><div class="code"><span style="--0:#57C78F;--1:#00783C">cd</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">chat-agent</span></div></div><div class="ec-line"><div class="code"><span style="--0:#57C78F;--1:#00783C">npm</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">install</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">agents</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">@cloudflare/ai-chat</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">ai</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">workers-ai-provider</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">zod</span></div></div></code></pre><div class="copy"><div aria-live="polite"></div><button data-copied="Copied!" data-code="cd chat-agentnpm install agents @cloudflare/ai-chat ai workers-ai-provider zod"><div></div></button></div></figure></div> <div tabindex="-1" class="heading-wrapper level-h2"><h2 id="2-configure-wrangler">2. Configure Wrangler</h2><a class="anchor-link" href="#2-configure-wrangler"><span aria-hidden="true" class="anchor-icon"><svg width="16" height="16" viewBox="0 0 24 24"><path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z"></path></svg></span></a></div> <p>Replace your <code dir="auto">wrangler.jsonc</code> with:</p> <script> (() => { class StarlightTabsRestore extends HTMLElement { connectedCallback() { const starlightTabs = this.closest('starlight-tabs'); if (!(starlightTabs instanceof HTMLElement) || typeof localStorage === 'undefined') return; const syncKey = starlightTabs.dataset.syncKey; if (!syncKey) return; const label = localStorage.getItem(starlight-synced-tabs__${syncKey}); if (!label) return; const tabs = [...starlightTabs?.querySelectorAll('[role="tab"]')]; const tabIndexToRestore = tabs.findIndex( (tab) => tab instanceof HTMLAnchorElement && tab.textContent?.trim() === label ); const panels = starlightTabs?.querySelectorAll(':scope > [role="tabpanel"]'); const newTab = tabs[tabIndexToRestore]; const newPanel = panels[tabIndexToRestore]; if (tabIndexToRestore < 1 || !newTab || !newPanel) return; tabs[0]?.setAttribute('aria-selected', 'false'); tabs[0]?.setAttribute('tabindex', '-1'); panels?.[0]?.setAttribute('hidden', 'true'); newTab.removeAttribute('tabindex'); newTab.setAttribute('aria-selected', 'true'); newPanel.removeAttribute('hidden'); } } customElements.define('starlight-tabs-restore', StarlightTabsRestore); })() </script><starlight-tabs data-sync-key="wranglerConfig" class="astro-6ilsj7c3"> <div class="tablist-wrapper not-content astro-6ilsj7c3"> <ul role="tablist" class="astro-6ilsj7c3"> <li role="presentation" class="tab astro-6ilsj7c3"> <a role="tab" href="#tab-panel-5260" id="tab-5260" aria-selected="true" tabindex="0" class="astro-6ilsj7c3"> <svg aria-hidden="true" class="astro-6ilsj7c3 astro-r7kprdcr" width="16" height="16" viewBox="0 0 24 24" fill="currentColor" style="--sl-icon-size: 1em;"><path d="M0.734 13.269L0.562 10.732Q1.938 10.732 2.497 10.087L2.497 10.087Q2.884 9.614 2.884 8.711L2.884 8.711Q2.884 8.324 2.798 7.571Q2.712 6.819 2.712 6.410Q2.712 6.002 2.669 5.185L2.669 5.185Q2.583 4.454 2.583 4.153L2.583 4.153Q2.583 2.089 3.787 1.099Q4.991 0.111 7.184 0.111L7.184 0.111L8.259 0.111L8.259 2.648L7.700 2.648Q6.754 2.648 6.345 3.185Q5.937 3.723 5.937 4.798L5.937 4.798Q5.937 5.056 6.023 5.572L6.023 5.572Q6.109 6.217 6.109 6.561L6.109 6.561Q6.109 6.819 6.152 7.378L6.152 7.378Q6.238 8.152 6.238 8.582L6.238 8.582Q6.238 10.216 5.550 11.033L5.550 11.033Q4.948 11.764 3.658 12.065L3.658 12.065Q4.948 12.409 5.550 13.097L5.550 13.097Q6.238 13.957 6.238 15.548L6.238 15.548Q6.238 16.021 6.152 16.795L6.152 16.795Q6.066 17.354 6.088 17.612Q6.109 17.870 6.023 18.515L6.023 18.515Q5.937 18.988 5.937 19.203L5.937 19.203Q5.937 20.278 6.345 20.815Q6.754 21.353 7.700 21.353L7.700 21.353L8.259 21.353L8.259 23.890L7.184 23.890Q2.712 23.890 2.712 19.848L2.712 19.848Q2.712 18.386 2.862 17.590Q3.013 16.795 3.013 15.290L3.013 15.290Q3.013 13.269 0.734 13.269L0.734 13.269ZM23.438 10.732L23.438 13.011Q21.159 13.011 21.159 15.032L21.159 15.032Q21.159 15.419 21.224 16.171Q21.288 16.924 21.288 17.311L21.288 17.311Q21.417 18.128 21.417 19.590L21.417 19.590Q21.417 23.632 16.859 23.632L16.859 23.632L15.784 23.632L15.784 21.353L16.300 21.353Q17.246 21.353 17.654 20.815Q18.063 20.278 18.063 19.203Q18.063 18.128 17.934 17.569L17.934 17.569Q17.934 17.225 17.848 16.558Q17.762 15.892 17.762 15.548L17.762 15.548Q17.762 13.957 18.450 13.097L18.450 13.097Q19.052 12.409 20.342 12.065L20.342 12.065Q19.052 11.764 18.450 11.033L18.450 11.033Q17.762 10.216 17.762 8.582L17.762 8.582Q17.762 8.152 17.848 7.378L17.848 7.378Q17.934 6.819 17.934 6.561L17.934 6.561Q18.063 5.873 18.063 4.841Q18.063 3.809 17.633 3.293Q17.203 2.777 16.300 2.648L16.300 2.648L15.784 2.648L15.784 0.111L16.859 0.111Q19.009 0.111 20.213 1.099Q21.417 2.089 21.417 4.153L21.417 4.153Q21.417 4.540 21.352 5.292Q21.288 6.045 21.288 6.432L21.288 6.432Q21.159 7.249 21.116 8.711L21.116 8.711Q21.159 9.614 21.503 10.087L21.503 10.087Q22.062 10.732 23.438 10.732L23.438 10.732Z"/></svg> wrangler.jsonc </a> </li><li role="presentation" class="tab astro-6ilsj7c3"> <a role="tab" href="#tab-panel-5261" id="tab-5261" aria-selected="false" tabindex="-1" class="astro-6ilsj7c3"> <svg aria-hidden="true" class="astro-6ilsj7c3 astro-r7kprdcr" width="16" height="16" viewBox="0 0 24 24" fill="currentColor" style="--sl-icon-size: 1em;"><path d="m21.32 9.55-1.89-.63.89-1.78A1 1 0 0 0 20.13 6L18 3.87a1 1 0 0 0-1.15-.19l-1.78.89-.63-1.89A1 1 0 0 0 13.5 2h-3a1 1 0 0 0-.95.68l-.63 1.89-1.78-.89A1 1 0 0 0 6 3.87L3.87 6a1 1 0 0 0-.19 1.15l.89 1.78-1.89.63a1 1 0 0 0-.68.94v3a1 1 0 0 0 .68.95l1.89.63-.89 1.78A1 1 0 0 0 3.87 18L6 20.13a1 1 0 0 0 1.15.19l1.78-.89.63 1.89a1 1 0 0 0 .95.68h3a1 1 0 0 0 .95-.68l.63-1.89 1.78.89a1 1 0 0 0 1.13-.19L20.13 18a1 1 0 0 0 .19-1.15l-.89-1.78 1.89-.63a1 1 0 0 0 .68-.94v-3a1 1 0 0 0-.68-.95ZM20 12.78l-1.2.4A2 2 0 0 0 17.64 16l.57 1.14-1.1 1.1-1.11-.6a2 2 0 0 0-2.79 1.16l-.4 1.2h-1.59l-.4-1.2A2 2 0 0 0 8 17.64l-1.14.57-1.1-1.1.6-1.11a2 2 0 0 0-1.16-2.82l-1.2-.4v-1.56l1.2-.4A2 2 0 0 0 6.36 8l-.57-1.11 1.1-1.1L8 6.36a2 2 0 0 0 2.82-1.16l.4-1.2h1.56l.4 1.2A2 2 0 0 0 16 6.36l1.14-.57 1.1 1.1-.6 1.11a2 2 0 0 0 1.16 2.79l1.2.4v1.59ZM12 8a4 4 0 1 0 0 8 4 4 0 0 0 0-8Zm0 6a2 2 0 1 1 0-4 2 2 0 0 1 0 4Z"/></svg> wrangler.toml </a> </li> </ul> </div> <div id="tab-panel-5260" aria-labelledby="tab-5260" role="tabpanel"> <div class="expressive-code"><link rel="stylesheet" href="/_astro/ec.7rqu9.css"><script type="module" src="/_astro/ec.0vx5m.js"></script><figure class="frame has-title not-content"><figcaption class="header"><span class="title">JSONC</span></figcaption><pre data-language="jsonc"><code><div class="ec-line"><div class="code"><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">"</span><span style="--0:#C895EA;--1:#7C5B92">name</span><span style="--0:#89DDFF;--1:#007474">"</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">"chat-agent"</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">"</span><span style="--0:#C895EA;--1:#7C5B92">main</span><span style="--0:#89DDFF;--1:#007474">"</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">"src/server.ts"</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#A9A9A5;--0fs:italic;--1:#62676A;--1fs:italic">// Set this to today's date</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">"</span><span style="--0:#C895EA;--1:#7C5B92">compatibility_date</span><span style="--0:#89DDFF;--1:#007474">"</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">"2026-06-10"</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">"</span><span style="--0:#C895EA;--1:#7C5B92">compatibility_flags</span><span style="--0:#89DDFF;--1:#007474">"</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">[</span><span style="--0:#FDDA68;--1:#A84E00">"nodejs_compat"</span><span style="--0:#89DDFF;--1:#007474">],</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">"</span><span style="--0:#C895EA;--1:#7C5B92">ai</span><span style="--0:#89DDFF;--1:#007474">"</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">{</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">"</span><span style="--0:#FFCB6B;--1:#7E6435">binding</span><span style="--0:#89DDFF;--1:#007474">"</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">"AI"</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">},</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">"</span><span style="--0:#C895EA;--1:#7C5B92">durable_objects</span><span style="--0:#89DDFF;--1:#007474">"</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">"</span><span style="--0:#FFCB6B;--1:#7E6435">bindings</span><span style="--0:#89DDFF;--1:#007474">"</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">[{</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">"</span><span style="--0:#F78C6C;--1:#985643">name</span><span style="--0:#89DDFF;--1:#007474">"</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">"ChatAgent"</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">"</span><span style="--0:#F78C6C;--1:#985643">class_name</span><span style="--0:#89DDFF;--1:#007474">"</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">"ChatAgent"</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">}],</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">},</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">"</span><span style="--0:#C895EA;--1:#7C5B92">migrations</span><span style="--0:#89DDFF;--1:#007474">"</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">[{</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">"</span><span style="--0:#FFCB6B;--1:#7E6435">tag</span><span style="--0:#89DDFF;--1:#007474">"</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">"v1"</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">"</span><span style="--0:#FFCB6B;--1:#7E6435">new_sqlite_classes</span><span style="--0:#89DDFF;--1:#007474">"</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">[</span><span style="--0:#FDDA68;--1:#A84E00">"ChatAgent"</span><span style="--0:#89DDFF;--1:#007474">]</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">}],</span></div></div><div class="ec-line"><div class="code"><span style="--0:#89DDFF;--1:#007474">}</span></div></div></code></pre><div class="copy"><div aria-live="polite"></div><button data-copied="Copied!" data-code="{ "name": "chat-agent", "main": "src/server.ts", // Set this to today's date "compatibility_date": "2026-06-10", "compatibility_flags": ["nodejs_compat"], "ai": { "binding": "AI" }, "durable_objects": { "bindings": [{ "name": "ChatAgent", "class_name": "ChatAgent" }], }, "migrations": [{ "tag": "v1", "new_sqlite_classes": ["ChatAgent"] }],}"><div></div></button></div><div class="explain"><button class="explain-button" type="button" data-explain-code="" aria-label="Explain Code"><svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M9.937 15.5A2 2 0 0 0 8.5 14.063l-6.135-1.582a.5.5 0 0 1 0-.962L8.5 9.936A2 2 0 0 0 9.937 8.5l1.582-6.135a.5.5 0 0 1 .963 0L14.063 8.5A2 2 0 0 0 15.5 9.937l6.135 1.581a.5.5 0 0 1 0 .964L15.5 14.063a2 2 0 0 0-1.437 1.437l-1.582 6.135a.5.5 0 0 1-.963 0z"></path><path d="M20 3v4"></path><path d="M22 5h-4"></path><path d="M4 17v2"></path><path d="M5 18H3"></path></svg></button></div></figure></div> </div> <div id="tab-panel-5261" aria-labelledby="tab-5261" role="tabpanel" hidden> <div class="expressive-code"><figure class="frame has-title not-content"><figcaption class="header"><span class="title">TOML</span></figcaption><pre data-language="toml"><code><div class="ec-line"><div class="code"><span style="--0:#EEFFFF;--1:#00268F">name</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">=</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">"chat-agent"</span></div></div><div class="ec-line"><div class="code"><span style="--0:#EEFFFF;--1:#00268F">main</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">=</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">"src/server.ts"</span></div></div><div class="ec-line"><div class="code"><span style="--0:#A9A9A5;--0fs:italic;--1:#62676A;--1fs:italic"># Set this to today's date</span></div></div><div class="ec-line"><div class="code"><span style="--0:#EEFFFF;--1:#00268F">compatibility_date</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">=</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">"2026-06-10"</span></div></div><div class="ec-line"><div class="code"><span style="--0:#EEFFFF;--1:#00268F">compatibility_flags</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">=</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">[</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">"nodejs_compat"</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">]</span></div></div><div class="ec-line"><div class="code"> </div></div><div class="ec-line"><div class="code"><span style="--0:#89DDFF;--1:#007474">[</span><span style="--0:#57C78F;--1:#00783C">ai</span><span style="--0:#89DDFF;--1:#007474">]</span></div></div><div class="ec-line"><div class="code"><span style="--0:#EEFFFF;--1:#00268F">binding</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">=</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">"AI"</span></div></div><div class="ec-line"><div class="code"> </div></div><div class="ec-line"><div class="code"><span style="--0:#89DDFF;--1:#007474">[[</span><span style="--0:#57C78F;--1:#00783C">durable_objects</span><span style="--0:#EEFFFF;--1:#62676A">.</span><span style="--0:#57C78F;--1:#00783C">bindings</span><span style="--0:#89DDFF;--1:#007474">]]</span></div></div><div class="ec-line"><div class="code"><span style="--0:#EEFFFF;--1:#00268F">name</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">=</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">"ChatAgent"</span></div></div><div class="ec-line"><div class="code"><span style="--0:#EEFFFF;--1:#00268F">class_name</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">=</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">"ChatAgent"</span></div></div><div class="ec-line"><div class="code"> </div></div><div class="ec-line"><div class="code"><span style="--0:#89DDFF;--1:#007474">[[</span><span style="--0:#57C78F;--1:#00783C">migrations</span><span style="--0:#89DDFF;--1:#007474">]]</span></div></div><div class="ec-line"><div class="code"><span style="--0:#EEFFFF;--1:#00268F">tag</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">=</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">"v1"</span></div></div><div class="ec-line"><div class="code"><span style="--0:#EEFFFF;--1:#00268F">new_sqlite_classes</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">=</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">[</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">"ChatAgent"</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">]</span></div></div></code></pre><div class="copy"><div aria-live="polite"></div><button data-copied="Copied!" data-code="name = "chat-agent"main = "src/server.ts"# Set this to today's datecompatibility_date = "2026-06-10"compatibility_flags = [ "nodejs_compat" ][ai]binding = "AI"[[durable_objects.bindings]]name = "ChatAgent"class_name = "ChatAgent"[[migrations]]tag = "v1"new_sqlite_classes = [ "ChatAgent" ]"><div></div></button></div><div class="explain"><button class="explain-button" type="button" data-explain-code="" aria-label="Explain Code"><svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M9.937 15.5A2 2 0 0 0 8.5 14.063l-6.135-1.582a.5.5 0 0 1 0-.962L8.5 9.936A2 2 0 0 0 9.937 8.5l1.582-6.135a.5.5 0 0 1 .963 0L14.063 8.5A2 2 0 0 0 15.5 9.937l6.135 1.581a.5.5 0 0 1 0 .964L15.5 14.063a2 2 0 0 0-1.437 1.437l-1.582 6.135a.5.5 0 0 1-.963 0z"></path><path d="M20 3v4"></path><path d="M22 5h-4"></path><path d="M4 17v2"></path><path d="M5 18H3"></path></svg></button></div></figure></div> </div> <starlight-tabs-restore class="astro-6ilsj7c3"></starlight-tabs-restore> </starlight-tabs> <script type="module">class r extends HTMLElement{static#e=new Map;#t;#n="starlight-synced-tabs__";constructor(){super();const t=this.querySelector('[role="tablist"]');if(this.tabs=[...t.querySelectorAll('[role="tab"]')],this.panels=[...this.querySelectorAll(':scope > [role="tabpanel"]')],this.#t=this.dataset.syncKey,this.#t){const i=r.#e.get(this.#t)??[];i.push(this),r.#e.set(this.#t,i)}this.tabs.forEach((i,c)=>{i.addEventListener("click",e=>{e.preventDefault();const n=t.querySelector('[aria-selected="true"]');e.currentTarget!==n&&this.switchTab(e.currentTarget,c)}),i.addEventListener("keydown",e=>{const n=this.tabs.indexOf(e.currentTarget),s=e.key==="ArrowLeft"?n-1:e.key==="ArrowRight"?n+1:e.key==="Home"?0:e.key==="End"?this.tabs.length-1:null;s!==null&&this.tabs[s]&&(e.preventDefault(),this.switchTab(this.tabs[s],s))})})}switchTab(t,i,c=!0){if(!t)return;const e=c?this.getBoundingClientRect().top:0;this.tabs.forEach(s=>{s.setAttribute("aria-selected","false"),s.setAttribute("tabindex","-1")}),this.panels.forEach(s=>{s.hidden=!0});const n=this.panels[i];n&&(n.hidden=!1),t.removeAttribute("tabindex"),t.setAttribute("aria-selected","true"),c&&(t.focus(),r.#r(this,t),window.scrollTo({top:window.scrollY+(this.getBoundingClientRect().top-e),behavior:"instant"}))}#i(t){!this.#t||typeof localStorage>"u"||localStorage.setItem(this.#n+this.#t,t)}static#r(t,i){const c=t.#t,e=r.#s(i);if(!c||!e)return;const n=r.#e.get(c);if(n){for(const s of n){if(s===t)continue;const a=s.tabs.findIndex(o=>r.#s(o)===e);a!==-1&&s.switchTab(s.tabs[a],a,!1)}t.#i(e)}}static#s(t){return t.textContent?.trim()}}customElements.define("starlight-tabs",r);</script> <p>Key settings:</p> <ul> <li><code dir="auto">ai</code> binds Workers AI — no API key needed</li> <li><code dir="auto">durable_objects</code> registers your chat agent class</li> <li><code dir="auto">new_sqlite_classes</code> enables SQLite storage for message persistence</li> </ul> <div tabindex="-1" class="heading-wrapper level-h2"><h2 id="3-write-the-server">3. Write the server</h2><a class="anchor-link" href="#3-write-the-server"><span aria-hidden="true" class="anchor-icon"><svg width="16" height="16" viewBox="0 0 24 24"><path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z"></path></svg></span></a></div> <p>Create <code dir="auto">src/server.ts</code>. This is where your agent lives:</p> <starlight-tabs data-sync-key="workersExamples" class="astro-6ilsj7c3"> <div class="tablist-wrapper not-content astro-6ilsj7c3"> <ul role="tablist" class="astro-6ilsj7c3"> <li role="presentation" class="tab astro-6ilsj7c3"> <a role="tab" href="#tab-panel-5262" id="tab-5262" aria-selected="true" tabindex="0" class="astro-6ilsj7c3"> <svg aria-hidden="true" class="astro-6ilsj7c3 astro-r7kprdcr" width="16" height="16" viewBox="0 0 24 24" fill="currentColor" style="--sl-icon-size: 1em;"><path d="M5.376 14.300L5.376 3.352L9.286 3.352L9.286 14.300Q9.286 17.842 7.630 19.452L7.630 19.452Q6.112 20.924 3.076 20.924L3.076 20.924Q2.386 20.924 1.558 20.809Q0.730 20.694 0.224 20.464L0.224 20.464L0.638 17.336Q1.512 17.750 2.662 17.750L2.662 17.750Q3.950 17.750 4.594 17.060L4.594 17.060Q5.376 16.232 5.376 14.300L5.376 14.300ZM11.862 19.912L12.736 16.600Q13.564 17.060 14.668 17.382L14.668 17.382Q15.910 17.750 17.014 17.750L17.014 17.750Q18.394 17.750 19.084 17.267Q19.774 16.784 19.774 15.910Q19.774 15.036 19.130 14.507Q18.486 13.978 16.876 13.426L16.876 13.426Q12.138 11.770 12.138 8.274L12.138 8.274Q12.138 5.974 13.909 4.525Q15.680 3.076 18.762 3.076L18.762 3.076Q21.200 3.076 23.224 3.950L23.224 3.950L22.350 7.124L22.074 6.986Q21.246 6.664 20.740 6.526L20.740 6.526Q19.774 6.250 18.762 6.250L18.762 6.250Q17.520 6.250 16.853 6.733Q16.186 7.216 16.186 7.998Q16.186 8.780 16.922 9.286L16.922 9.286Q17.474 9.700 19.314 10.436L19.314 10.436Q21.614 11.310 22.695 12.552Q23.776 13.794 23.776 15.588L23.776 15.588Q23.776 17.888 22.028 19.314L22.028 19.314Q20.142 20.924 16.738 20.924L16.738 20.924Q15.404 20.924 13.932 20.556L13.932 20.556Q12.782 20.326 11.862 19.912L11.862 19.912Z"/></svg> JavaScript </a> </li><li role="presentation" class="tab astro-6ilsj7c3"> <a role="tab" href="#tab-panel-5263" id="tab-5263" aria-selected="false" tabindex="-1" class="astro-6ilsj7c3"> <svg aria-hidden="true" class="astro-6ilsj7c3 astro-r7kprdcr" width="16" height="16" viewBox="0 0 24 24" fill="currentColor" style="--sl-icon-size: 1em;"><path d="M11.376 6.833L11.532 6.833L7.359 6.833L7.359 19.235L4.317 19.235L4.317 6.833L0.183 6.833L0.183 4.610L11.376 4.610L11.376 6.833ZM20.892 15.491L20.892 15.491Q20.892 15.062 20.736 14.750Q20.580 14.438 20.307 14.126L20.307 14.126Q20.073 13.931 19.605 13.697L19.605 13.697Q19.293 13.580 18.513 13.268L18.513 13.268L18.201 13.151Q15.666 12.410 14.184 11.318L14.184 11.318Q12.858 10.187 12.858 8.510L12.858 8.510Q12.858 6.677 14.457 5.585L14.457 5.585Q15.900 4.492 18.299 4.492Q20.697 4.492 22.257 5.858L22.257 5.858Q23.700 7.145 23.700 9.017L23.700 9.017L20.892 9.017Q20.892 8.471 20.716 8.081Q20.541 7.691 20.151 7.301L20.151 7.301Q19.371 6.716 18.201 6.716Q17.031 6.716 16.407 7.184Q15.783 7.652 15.783 8.510L15.783 8.510Q15.783 9.212 16.524 9.758L16.524 9.758Q16.836 9.992 17.460 10.226L17.460 10.226Q17.928 10.421 18.942 10.733L18.942 10.733Q21.321 11.434 22.569 12.507Q23.817 13.580 23.817 15.491L23.817 15.491Q23.817 16.427 23.447 17.187Q23.076 17.948 22.374 18.416L22.374 18.416Q20.892 19.508 18.474 19.508L18.474 19.508Q15.900 19.508 14.301 18.260L14.301 18.260Q12.468 16.817 12.624 14.750L12.624 14.750L15.549 14.750Q15.549 15.998 16.407 16.700L16.407 16.700Q16.758 16.973 17.343 17.129Q17.928 17.285 18.591 17.285L18.591 17.285Q19.917 17.285 20.424 16.817L20.424 16.817Q20.892 16.076 20.892 15.491Z"/></svg> TypeScript </a> </li> </ul> </div> <div id="tab-panel-5262" aria-labelledby="tab-5262" role="tabpanel"> <div class="expressive-code"><figure class="frame has-title not-content"><figcaption class="header"><span class="title">JavaScript</span></figcaption><pre data-language="js"><code><div class="ec-line"><div class="code"><span style="--0:#EE9080;--1:#8F1500">import </span><span style="--0:#89DDFF;--1:#007474">{</span><span style="--1:#8F1500"><span style="--0:#EE9080"> </span><span style="--0:#D5D7D8">AIChatAgent</span><span style="--0:#EE9080"> </span></span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EE9080;--1:#8F1500"> from </span><span style="--0:#FDDA68;--1:#A84E00">"@cloudflare/ai-chat"</span><span style="--0:#89DDFF;--1:#007474">;</span></div></div><div class="ec-line"><div class="code"><span style="--0:#EE9080;--1:#8F1500">import </span><span style="--0:#89DDFF;--1:#007474">{</span><span style="--1:#8F1500"><span style="--0:#EE9080"> </span><span style="--0:#D5D7D8">routeAgentRequest</span><span style="--0:#EE9080"> </span></span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EE9080;--1:#8F1500"> from </span><span style="--0:#FDDA68;--1:#A84E00">"agents"</span><span style="--0:#89DDFF;--1:#007474">;</span></div></div><div class="ec-line"><div class="code"><span style="--0:#EE9080;--1:#8F1500">import </span><span style="--0:#89DDFF;--1:#007474">{</span><span style="--1:#8F1500"><span style="--0:#EE9080"> </span><span style="--0:#D5D7D8">createWorkersAI</span><span style="--0:#EE9080"> </span></span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EE9080;--1:#8F1500"> from </span><span style="--0:#FDDA68;--1:#A84E00">"workers-ai-provider"</span><span style="--0:#89DDFF;--1:#007474">;</span></div></div><div class="ec-line"><div class="code"><span style="--0:#EE9080;--1:#8F1500">import </span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--1:#8F1500"> </span></span><span style="--0:#D5D7D8;--1:#8F1500">streamText</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--1:#8F1500"> </span></span><span style="--0:#D5D7D8;--1:#8F1500">convertToModelMessages</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--1:#8F1500"> </span></span><span style="--0:#D5D7D8;--1:#8F1500">pruneMessages</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--1:#8F1500"> </span></span><span style="--0:#D5D7D8;--1:#8F1500">tool</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--1:#8F1500"> </span></span><span style="--0:#D5D7D8;--1:#8F1500">stepCountIs</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EE9080;--1:#8F1500"> from </span><span style="--0:#FDDA68;--1:#A84E00">"ai"</span><span style="--0:#89DDFF;--1:#007474">;</span></div></div><div class="ec-line"><div class="code"><span style="--0:#EE9080;--1:#8F1500">import </span><span style="--0:#89DDFF;--1:#007474">{</span><span style="--1:#8F1500"><span style="--0:#EE9080"> </span><span style="--0:#D5D7D8">z</span><span style="--0:#EE9080"> </span></span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EE9080;--1:#8F1500"> from </span><span style="--0:#FDDA68;--1:#A84E00">"zod"</span><span style="--0:#89DDFF;--1:#007474">;</span></div></div><div class="ec-line"><div class="code"> </div></div><div class="ec-line"><div class="code"><span style="--0:#EE9080;--1:#8F1500">export</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#EE9080;--1:#8F1500">class</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#57C78F;--1:#00783C">ChatAgent</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#EE9080;--1:#8F1500">extends</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">AIChatAgent</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#EE9080;--1:#8F1500">async</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#57C78F;--1:#00783C">onChatMessage</span><span style="--0:#89DDFF;--1:#007474">()</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#EE9080;--1:#8F1500">const</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">workersai</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">=</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#57C78F;--1:#00783C">createWorkersAI</span><span style="--0:#EE9080;--1:#32008F">(</span><span style="--0:#89DDFF;--1:#007474">{</span><span style="--0:#EE9080;--1:#32008F"> binding</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#FF8398;--0fs:italic;--1:#B73C51;--1fs:italic">this</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#EEFFFF;--1:#00268F">env</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#EEFFFF;--1:#00268F">AI</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EE9080;--1:#32008F">)</span><span style="--0:#89DDFF;--1:#007474">;</span></div></div><div class="ec-line"><div class="code"> </div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#EE9080;--1:#8F1500">const</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">result</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">=</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#57C78F;--1:#00783C">streamText</span><span style="--0:#EE9080;--1:#32008F">(</span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">model</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#57C78F;--1:#00783C">workersai</span><span style="--0:#EE9080;--1:#32008F">(</span><span style="--0:#FDDA68;--1:#A84E00">"@cf/meta/llama-4-scout-17b-16e-instruct"</span><span style="--0:#EE9080;--1:#32008F">)</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">system</span><span style="--0:#89DDFF;--1:#007474">:</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#FDDA68;--1:#A84E00">"You are a helpful assistant. You can check the weather, "</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">+</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#FDDA68;--1:#A84E00">"get the user's timezone, and run calculations."</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">messages</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#57C78F;--1:#00783C">pruneMessages</span><span style="--0:#EE9080;--1:#32008F">(</span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">messages</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">await</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#57C78F;--1:#00783C">convertToModelMessages</span><span style="--0:#EE9080;--1:#32008F">(</span><span style="--0:#FF8398;--0fs:italic;--1:#B73C51;--1fs:italic">this</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#EEFFFF;--1:#00268F">messages</span><span style="--0:#EE9080;--1:#32008F">)</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">toolCalls</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#FDDA68;--1:#A84E00">"before-last-2-messages"</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EE9080;--1:#32008F">)</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">tools</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#A9A9A5;--0fs:italic;--1:#62676A;--1fs:italic">// Server-side tool: runs automatically on the server</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">getWeather</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#57C78F;--1:#00783C">tool</span><span style="--0:#EE9080;--1:#32008F">(</span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">description</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#FDDA68;--1:#A84E00">"Get the current weather for a city"</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">inputSchema</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">z</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">object</span><span style="--0:#EE9080;--1:#32008F">(</span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">city</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">z</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">string</span><span style="--0:#EE9080;--1:#32008F">()</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">describe</span><span style="--0:#EE9080;--1:#32008F">(</span><span style="--0:#FDDA68;--1:#A84E00">"City name"</span><span style="--0:#EE9080;--1:#32008F">)</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EE9080;--1:#32008F">)</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#57C78F;--1:#00783C">execute</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">async</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">({</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#B59EE1;--1:#7C008F">city</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">})</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">=></span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#A9A9A5;--0fs:italic;--1:#62676A;--1fs:italic">// Replace with a real weather API in production</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080"> </span></span><span style="--0:#EE9080;--1:#8F1500">const</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">conditions</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">=</span><span style="--0:#EE9080;--1:#32008F"> [</span><span style="--0:#FDDA68;--1:#A84E00">"sunny"</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#FDDA68;--1:#A84E00">"cloudy"</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#FDDA68;--1:#A84E00">"rainy"</span><span style="--0:#EE9080;--1:#32008F">]</span><span style="--0:#89DDFF;--1:#007474">;</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080"> </span></span><span style="--0:#EE9080;--1:#8F1500">const</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">temp</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">=</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">Math</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">floor</span><span style="--0:#EE9080;--1:#32008F">(</span><span style="--0:#EEFFFF;--1:#00268F">Math</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">random</span><span style="--0:#EE9080;--1:#32008F">() </span><span style="--0:#EE9080;--1:#8F1500"></span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#B59EE1;--1:#7C008F">30</span><span style="--0:#EE9080;--1:#32008F">) </span><span style="--0:#EE9080;--1:#8F1500">+</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#B59EE1;--1:#7C008F">5</span><span style="--0:#89DDFF;--1:#007474">;</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080"> </span></span><span style="--0:#EE9080;--1:#8F1500">return</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#D5D7D8;--1:#8F1500">city</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">temperature</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#D5D7D8;--1:#8F1500">temp</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">condition</span><span style="--0:#89DDFF;--1:#007474">:</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#D5D7D8;--1:#8F1500">conditions</span><span style="--0:#EE9080;--1:#32008F">[</span><span style="--0:#EEFFFF;--1:#00268F">Math</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">floor</span><span style="--0:#EE9080;--1:#32008F">(</span><span style="--0:#EEFFFF;--1:#00268F">Math</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">random</span><span style="--0:#EE9080;--1:#32008F">() </span><span style="--0:#EE9080;--1:#8F1500"></span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">conditions</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#EE9080;--1:#9D5600">length</span><span style="--0:#EE9080;--1:#32008F">)]</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">};</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">},</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EE9080;--1:#32008F">)</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"> </div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#A9A9A5;--0fs:italic;--1:#62676A;--1fs:italic">// Client-side tool: no execute function — the browser handles it</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">getUserTimezone</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#57C78F;--1:#00783C">tool</span><span style="--0:#EE9080;--1:#32008F">(</span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">description</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#FDDA68;--1:#A84E00">"Get the user's timezone from their browser"</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">inputSchema</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">z</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">object</span><span style="--0:#EE9080;--1:#32008F">(</span><span style="--0:#89DDFF;--1:#007474">{}</span><span style="--0:#EE9080;--1:#32008F">)</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EE9080;--1:#32008F">)</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"> </div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#A9A9A5;--0fs:italic;--1:#62676A;--1fs:italic">// Approval tool: requires user confirmation before executing</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">calculate</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#57C78F;--1:#00783C">tool</span><span style="--0:#EE9080;--1:#32008F">(</span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">description</span><span style="--0:#89DDFF;--1:#007474">:</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#FDDA68;--1:#A84E00">"Perform a math calculation with two numbers. "</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">+</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#FDDA68;--1:#A84E00">"Requires user approval for large numbers."</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">inputSchema</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">z</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">object</span><span style="--0:#EE9080;--1:#32008F">(</span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">a</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">z</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#EEFFFF;--1:#00268F">coerce</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">number</span><span style="--0:#EE9080;--1:#32008F">()</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">describe</span><span style="--0:#EE9080;--1:#32008F">(</span><span style="--0:#FDDA68;--1:#A84E00">"First number"</span><span style="--0:#EE9080;--1:#32008F">)</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">b</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">z</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#EEFFFF;--1:#00268F">coerce</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">number</span><span style="--0:#EE9080;--1:#32008F">()</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">describe</span><span style="--0:#EE9080;--1:#32008F">(</span><span style="--0:#FDDA68;--1:#A84E00">"Second number"</span><span style="--0:#EE9080;--1:#32008F">)</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">operator</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#D5D7D8;--1:#8F1500">z</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">enum</span><span style="--0:#EE9080;--1:#32008F">([</span><span style="--0:#FDDA68;--1:#A84E00">"+"</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#FDDA68;--1:#A84E00">"-"</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#FDDA68;--1:#A84E00">""</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#FDDA68;--1:#A84E00">"/"</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#FDDA68;--1:#A84E00">"%"</span><span style="--0:#EE9080;--1:#32008F">])</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">describe</span><span style="--0:#EE9080;--1:#32008F">(</span><span style="--0:#FDDA68;--1:#A84E00">"Arithmetic operator"</span><span style="--0:#EE9080;--1:#32008F">)</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EE9080;--1:#32008F">)</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#57C78F;--1:#00783C">needsApproval</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">async</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">({</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#B59EE1;--1:#7C008F">a</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#B59EE1;--1:#7C008F">b</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">})</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">=></span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#EEFFFF;--1:#00268F">Math</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">abs</span><span style="--0:#EE9080;--1:#32008F">(</span><span style="--0:#D5D7D8;--1:#8F1500">a</span><span style="--0:#EE9080;--1:#32008F">) </span><span style="--0:#EE9080;--1:#8F1500">></span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#B59EE1;--1:#7C008F">1000</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">||</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">Math</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">abs</span><span style="--0:#EE9080;--1:#32008F">(</span><span style="--0:#D5D7D8;--1:#8F1500">b</span><span style="--0:#EE9080;--1:#32008F">) </span><span style="--0:#EE9080;--1:#8F1500">></span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#B59EE1;--1:#7C008F">1000</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#57C78F;--1:#00783C">execute</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">async</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">({</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#B59EE1;--1:#7C008F">a</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#B59EE1;--1:#7C008F">b</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#B59EE1;--1:#7C008F">operator</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">})</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">=></span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080"> </span></span><span style="--0:#EE9080;--1:#8F1500">const</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">ops</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">=</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#FDDA68;--1:#A84E00">"+"</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">(</span><span style="--0:#B59EE1;--1:#7C008F">x</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#B59EE1;--1:#7C008F">y</span><span style="--0:#89DDFF;--1:#007474">)</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">=></span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#D5D7D8;--1:#8F1500">x</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">+</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#D5D7D8;--1:#8F1500">y</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#FDDA68;--1:#A84E00">"-"</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">(</span><span style="--0:#B59EE1;--1:#7C008F">x</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#B59EE1;--1:#7C008F">y</span><span style="--0:#89DDFF;--1:#007474">)</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">=></span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#D5D7D8;--1:#8F1500">x</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">-</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#D5D7D8;--1:#8F1500">y</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#FDDA68;--1:#A84E00">""</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">(</span><span style="--0:#B59EE1;--1:#7C008F">x</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#B59EE1;--1:#7C008F">y</span><span style="--0:#89DDFF;--1:#007474">)</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">=></span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#D5D7D8;--1:#8F1500">x</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500"></span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#D5D7D8;--1:#8F1500">y</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#FDDA68;--1:#A84E00">"/"</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">(</span><span style="--0:#B59EE1;--1:#7C008F">x</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#B59EE1;--1:#7C008F">y</span><span style="--0:#89DDFF;--1:#007474">)</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">=></span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#D5D7D8;--1:#8F1500">x</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">/</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#D5D7D8;--1:#8F1500">y</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#FDDA68;--1:#A84E00">"%"</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">(</span><span style="--0:#B59EE1;--1:#7C008F">x</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#B59EE1;--1:#7C008F">y</span><span style="--0:#89DDFF;--1:#007474">)</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">=></span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#D5D7D8;--1:#8F1500">x</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">%</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#D5D7D8;--1:#8F1500">y</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">};</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080"> </span></span><span style="--0:#EE9080;--1:#8F1500">if</span><span style="--0:#EE9080;--1:#32008F"> (</span><span style="--0:#D5D7D8;--1:#8F1500">operator</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">===</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#FDDA68;--1:#A84E00">"/"</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">&&</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#D5D7D8;--1:#8F1500">b</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">===</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#B59EE1;--1:#7C008F">0</span><span style="--0:#EE9080;--1:#32008F">) </span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080"> </span></span><span style="--0:#EE9080;--1:#8F1500">return</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">{</span><span style="--0:#EE9080;--1:#32008F"> error</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#FDDA68;--1:#A84E00">"Division by zero"</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">};</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">}</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080"> </span></span><span style="--0:#EE9080;--1:#8F1500">return</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">expression</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#FDDA68;--1:#A84E00"></span><span style="--0:#89DDFF;--1:#007474">${</span><span style="--0:#D5D7D8;--1:#8F1500">a</span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#FDDA68;--1:#A84E00"> </span><span style="--0:#89DDFF;--1:#007474">${</span><span style="--0:#D5D7D8;--1:#8F1500">operator</span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#FDDA68;--1:#A84E00"> </span><span style="--0:#89DDFF;--1:#007474">${</span><span style="--0:#D5D7D8;--1:#8F1500">b</span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#FDDA68;--1:#A84E00"></span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">result</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#D5D7D8;--1:#8F1500">ops</span><span style="--0:#EE9080;--1:#32008F"></span><span style="--0:#D5D7D8;--1:#8F1500">operator</span><span style="--0:#EE9080;--1:#32008F"></span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">};</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">},</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EE9080;--1:#32008F">)</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">},</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">stopWhen</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#57C78F;--1:#00783C">stepCountIs</span><span style="--0:#EE9080;--1:#32008F">(</span><span style="--0:#B59EE1;--1:#7C008F">5</span><span style="--0:#EE9080;--1:#32008F">)</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EE9080;--1:#32008F">)</span><span style="--0:#89DDFF;--1:#007474">;</span></div></div><div class="ec-line"><div class="code"> </div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#EE9080;--1:#8F1500">return</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#EEFFFF;--1:#00268F">result</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">toUIMessageStreamResponse</span><span style="--0:#EEFFFF;--1:#62676A">()</span><span style="--0:#89DDFF;--1:#007474">;</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">}</span></div></div><div class="ec-line"><div class="code"><span style="--0:#89DDFF;--1:#007474">}</span></div></div><div class="ec-line"><div class="code"> </div></div><div class="ec-line"><div class="code"><span style="--0:#EE9080;--1:#8F1500">export</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#EE9080;--1:#8F1500">default</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#EE9080;--1:#8F1500">async</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#57C78F;--1:#00783C">fetch</span><span style="--0:#89DDFF;--1:#007474">(</span><span style="--0:#B59EE1;--1:#7C008F">request</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#B59EE1;--1:#7C008F">env</span><span style="--0:#89DDFF;--1:#007474">)</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#EE9080;--1:#8F1500">return</span><span style="--0:#EEFFFF;--1:#62676A"> (</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EEFFFF;--1:#62676A"> </span></span><span style="--0:#EEFFFF;--1:#62676A">(</span><span style="--0:#EE9080;--1:#8F1500">await</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#57C78F;--1:#00783C">routeAgentRequest</span><span style="--0:#EEFFFF;--1:#62676A">(</span><span style="--0:#D5D7D8;--1:#8F1500">request</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#D5D7D8;--1:#8F1500">env</span><span style="--0:#EEFFFF;--1:#62676A">)) </span><span style="--0:#EE9080;--1:#8F1500">||</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#EE9080;--1:#8F1500">new</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#57C78F;--1:#00783C">Response</span><span style="--0:#EEFFFF;--1:#62676A">(</span><span style="--0:#FDDA68;--1:#A84E00">"Not found"</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">{</span><span style="--0:#EEFFFF;--1:#62676A"> status</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#B59EE1;--1:#7C008F">404</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EEFFFF;--1:#62676A">)</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EEFFFF;--1:#62676A"> </span></span><span style="--0:#EEFFFF;--1:#62676A">)</span><span style="--0:#89DDFF;--1:#007474">;</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">},</span></div></div><div class="ec-line"><div class="code"><span style="--0:#89DDFF;--1:#007474">};</span></div></div></code></pre><div class="copy"><div aria-live="polite"></div><button data-copied="Copied!" data-code="import { AIChatAgent } from "@cloudflare/ai-chat";import { routeAgentRequest } from "agents";import { createWorkersAI } from "workers-ai-provider";import { streamText, convertToModelMessages, pruneMessages, tool, stepCountIs,} from "ai";import { z } from "zod";export class ChatAgent extends AIChatAgent { async onChatMessage() { const workersai = createWorkersAI({ binding: this.env.AI }); const result = streamText({ model: workersai("@cf/meta/llama-4-scout-17b-16e-instruct"), system: "You are a helpful assistant. You can check the weather, " + "get the user's timezone, and run calculations.", messages: pruneMessages({ messages: await convertToModelMessages(this.messages), toolCalls: "before-last-2-messages", }), tools: { // Server-side tool: runs automatically on the server getWeather: tool({ description: "Get the current weather for a city", inputSchema: z.object({ city: z.string().describe("City name"), }), execute: async ({ city }) => { // Replace with a real weather API in production const conditions = ["sunny", "cloudy", "rainy"]; const temp = Math.floor(Math.random() 30) + 5; return { city, temperature: temp, condition: conditions[Math.floor(Math.random() conditions.length)], }; }, }), // Client-side tool: no execute function — the browser handles it getUserTimezone: tool({ description: "Get the user's timezone from their browser", inputSchema: z.object({}), }), // Approval tool: requires user confirmation before executing calculate: tool({ description: "Perform a math calculation with two numbers. " + "Requires user approval for large numbers.", inputSchema: z.object({ a: z.coerce.number().describe("First number"), b: z.coerce.number().describe("Second number"), operator: z .enum(["+", "-", "", "/", "%"]) .describe("Arithmetic operator"), }), needsApproval: async ({ a, b }) => Math.abs(a) > 1000 || Math.abs(b) > 1000, execute: async ({ a, b, operator }) => { const ops = { "+": (x, y) => x + y, "-": (x, y) => x - y, "": (x, y) => x y, "/": (x, y) => x / y, "%": (x, y) => x % y, }; if (operator === "/" && b === 0) { return { error: "Division by zero" }; } return { expression: `${a} ${operator} ${b}`, result: opsoperator, }; }, }), }, stopWhen: stepCountIs(5), }); return result.toUIMessageStreamResponse(); }}export default { async fetch(request, env) { return ( (await routeAgentRequest(request, env)) || new Response("Not found", { status: 404 }) ); },};"><div></div></button></div><div class="explain"><button class="explain-button" type="button" data-explain-code="" aria-label="Explain Code"><svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M9.937 15.5A2 2 0 0 0 8.5 14.063l-6.135-1.582a.5.5 0 0 1 0-.962L8.5 9.936A2 2 0 0 0 9.937 8.5l1.582-6.135a.5.5 0 0 1 .963 0L14.063 8.5A2 2 0 0 0 15.5 9.937l6.135 1.581a.5.5 0 0 1 0 .964L15.5 14.063a2 2 0 0 0-1.437 1.437l-1.582 6.135a.5.5 0 0 1-.963 0z"></path><path d="M20 3v4"></path><path d="M22 5h-4"></path><path d="M4 17v2"></path><path d="M5 18H3"></path></svg></button></div></figure></div> </div> <div id="tab-panel-5263" aria-labelledby="tab-5263" role="tabpanel" hidden> <div class="expressive-code"><figure class="frame has-title not-content"><figcaption class="header"><span class="title">TypeScript</span></figcaption><pre data-language="ts"><code><div class="ec-line"><div class="code"><span style="--0:#EE9080;--1:#8F1500">import </span><span style="--0:#89DDFF;--1:#007474">{</span><span style="--1:#8F1500"><span style="--0:#EE9080"> </span><span style="--0:#D5D7D8">AIChatAgent</span><span style="--0:#EE9080"> </span></span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EE9080;--1:#8F1500"> from </span><span style="--0:#FDDA68;--1:#A84E00">"@cloudflare/ai-chat"</span><span style="--0:#89DDFF;--1:#007474">;</span></div></div><div class="ec-line"><div class="code"><span style="--0:#EE9080;--1:#8F1500">import </span><span style="--0:#89DDFF;--1:#007474">{</span><span style="--1:#8F1500"><span style="--0:#EE9080"> </span><span style="--0:#D5D7D8">routeAgentRequest</span><span style="--0:#EE9080"> </span></span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EE9080;--1:#8F1500"> from </span><span style="--0:#FDDA68;--1:#A84E00">"agents"</span><span style="--0:#89DDFF;--1:#007474">;</span></div></div><div class="ec-line"><div class="code"><span style="--0:#EE9080;--1:#8F1500">import </span><span style="--0:#89DDFF;--1:#007474">{</span><span style="--1:#8F1500"><span style="--0:#EE9080"> </span><span style="--0:#D5D7D8">createWorkersAI</span><span style="--0:#EE9080"> </span></span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EE9080;--1:#8F1500"> from </span><span style="--0:#FDDA68;--1:#A84E00">"workers-ai-provider"</span><span style="--0:#89DDFF;--1:#007474">;</span></div></div><div class="ec-line"><div class="code"><span style="--0:#EE9080;--1:#8F1500">import </span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--1:#8F1500"> </span></span><span style="--0:#D5D7D8;--1:#8F1500">streamText</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--1:#8F1500"> </span></span><span style="--0:#D5D7D8;--1:#8F1500">convertToModelMessages</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--1:#8F1500"> </span></span><span style="--0:#D5D7D8;--1:#8F1500">pruneMessages</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--1:#8F1500"> </span></span><span style="--0:#D5D7D8;--1:#8F1500">tool</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--1:#8F1500"> </span></span><span style="--0:#D5D7D8;--1:#8F1500">stepCountIs</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EE9080;--1:#8F1500"> from </span><span style="--0:#FDDA68;--1:#A84E00">"ai"</span><span style="--0:#89DDFF;--1:#007474">;</span></div></div><div class="ec-line"><div class="code"><span style="--0:#EE9080;--1:#8F1500">import </span><span style="--0:#89DDFF;--1:#007474">{</span><span style="--1:#8F1500"><span style="--0:#EE9080"> </span><span style="--0:#D5D7D8">z</span><span style="--0:#EE9080"> </span></span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EE9080;--1:#8F1500"> from </span><span style="--0:#FDDA68;--1:#A84E00">"zod"</span><span style="--0:#89DDFF;--1:#007474">;</span></div></div><div class="ec-line"><div class="code"> </div></div><div class="ec-line"><div class="code"><span style="--0:#EE9080;--1:#8F1500">export</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#EE9080;--1:#8F1500">class</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#57C78F;--1:#00783C">ChatAgent</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#EE9080;--1:#8F1500">extends</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">AIChatAgent</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#EE9080;--1:#8F1500">async</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#57C78F;--1:#00783C">onChatMessage</span><span style="--0:#89DDFF;--1:#007474">()</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#EE9080;--1:#8F1500">const</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">workersai</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">=</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#57C78F;--1:#00783C">createWorkersAI</span><span style="--0:#EE9080;--1:#32008F">(</span><span style="--0:#89DDFF;--1:#007474">{</span><span style="--0:#EE9080;--1:#32008F"> binding</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#FF8398;--0fs:italic;--1:#B73C51;--1fs:italic">this</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#EEFFFF;--1:#00268F">env</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#EEFFFF;--1:#00268F">AI</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EE9080;--1:#32008F">)</span><span style="--0:#89DDFF;--1:#007474">;</span></div></div><div class="ec-line"><div class="code"> </div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#EE9080;--1:#8F1500">const</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">result</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">=</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#57C78F;--1:#00783C">streamText</span><span style="--0:#EE9080;--1:#32008F">(</span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">model</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#57C78F;--1:#00783C">workersai</span><span style="--0:#EE9080;--1:#32008F">(</span><span style="--0:#FDDA68;--1:#A84E00">"@cf/meta/llama-4-scout-17b-16e-instruct"</span><span style="--0:#EE9080;--1:#32008F">)</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">system</span><span style="--0:#89DDFF;--1:#007474">:</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#FDDA68;--1:#A84E00">"You are a helpful assistant. You can check the weather, "</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">+</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#FDDA68;--1:#A84E00">"get the user's timezone, and run calculations."</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">messages</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#57C78F;--1:#00783C">pruneMessages</span><span style="--0:#EE9080;--1:#32008F">(</span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">messages</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">await</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#57C78F;--1:#00783C">convertToModelMessages</span><span style="--0:#EE9080;--1:#32008F">(</span><span style="--0:#FF8398;--0fs:italic;--1:#B73C51;--1fs:italic">this</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#EEFFFF;--1:#00268F">messages</span><span style="--0:#EE9080;--1:#32008F">)</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">toolCalls</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#FDDA68;--1:#A84E00">"before-last-2-messages"</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EE9080;--1:#32008F">)</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">tools</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#A9A9A5;--0fs:italic;--1:#62676A;--1fs:italic">// Server-side tool: runs automatically on the server</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">getWeather</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#57C78F;--1:#00783C">tool</span><span style="--0:#EE9080;--1:#32008F">(</span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">description</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#FDDA68;--1:#A84E00">"Get the current weather for a city"</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">inputSchema</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">z</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">object</span><span style="--0:#EE9080;--1:#32008F">(</span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">city</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">z</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">string</span><span style="--0:#EE9080;--1:#32008F">()</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">describe</span><span style="--0:#EE9080;--1:#32008F">(</span><span style="--0:#FDDA68;--1:#A84E00">"City name"</span><span style="--0:#EE9080;--1:#32008F">)</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EE9080;--1:#32008F">)</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#57C78F;--1:#00783C">execute</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">async</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">({</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#B59EE1;--1:#7C008F">city</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">})</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">=></span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#A9A9A5;--0fs:italic;--1:#62676A;--1fs:italic">// Replace with a real weather API in production</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080"> </span></span><span style="--0:#EE9080;--1:#8F1500">const</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">conditions</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">=</span><span style="--0:#EE9080;--1:#32008F"> [</span><span style="--0:#FDDA68;--1:#A84E00">"sunny"</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#FDDA68;--1:#A84E00">"cloudy"</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#FDDA68;--1:#A84E00">"rainy"</span><span style="--0:#EE9080;--1:#32008F">]</span><span style="--0:#89DDFF;--1:#007474">;</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080"> </span></span><span style="--0:#EE9080;--1:#8F1500">const</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">temp</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">=</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">Math</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">floor</span><span style="--0:#EE9080;--1:#32008F">(</span><span style="--0:#EEFFFF;--1:#00268F">Math</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">random</span><span style="--0:#EE9080;--1:#32008F">() </span><span style="--0:#EE9080;--1:#8F1500"></span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#B59EE1;--1:#7C008F">30</span><span style="--0:#EE9080;--1:#32008F">) </span><span style="--0:#EE9080;--1:#8F1500">+</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#B59EE1;--1:#7C008F">5</span><span style="--0:#89DDFF;--1:#007474">;</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080"> </span></span><span style="--0:#EE9080;--1:#8F1500">return</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#D5D7D8;--1:#8F1500">city</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">temperature</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#D5D7D8;--1:#8F1500">temp</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">condition</span><span style="--0:#89DDFF;--1:#007474">:</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#D5D7D8;--1:#8F1500">conditions</span><span style="--0:#EE9080;--1:#32008F">[</span><span style="--0:#EEFFFF;--1:#00268F">Math</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">floor</span><span style="--0:#EE9080;--1:#32008F">(</span><span style="--0:#EEFFFF;--1:#00268F">Math</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">random</span><span style="--0:#EE9080;--1:#32008F">() </span><span style="--0:#EE9080;--1:#8F1500"></span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">conditions</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#EE9080;--1:#9D5600">length</span><span style="--0:#EE9080;--1:#32008F">)]</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">};</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">},</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EE9080;--1:#32008F">)</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"> </div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#A9A9A5;--0fs:italic;--1:#62676A;--1fs:italic">// Client-side tool: no execute function — the browser handles it</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">getUserTimezone</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#57C78F;--1:#00783C">tool</span><span style="--0:#EE9080;--1:#32008F">(</span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">description</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#FDDA68;--1:#A84E00">"Get the user's timezone from their browser"</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">inputSchema</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">z</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">object</span><span style="--0:#EE9080;--1:#32008F">(</span><span style="--0:#89DDFF;--1:#007474">{}</span><span style="--0:#EE9080;--1:#32008F">)</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EE9080;--1:#32008F">)</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"> </div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#A9A9A5;--0fs:italic;--1:#62676A;--1fs:italic">// Approval tool: requires user confirmation before executing</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">calculate</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#57C78F;--1:#00783C">tool</span><span style="--0:#EE9080;--1:#32008F">(</span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">description</span><span style="--0:#89DDFF;--1:#007474">:</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#FDDA68;--1:#A84E00">"Perform a math calculation with two numbers. "</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">+</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#FDDA68;--1:#A84E00">"Requires user approval for large numbers."</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">inputSchema</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">z</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">object</span><span style="--0:#EE9080;--1:#32008F">(</span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">a</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">z</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#EEFFFF;--1:#00268F">coerce</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">number</span><span style="--0:#EE9080;--1:#32008F">()</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">describe</span><span style="--0:#EE9080;--1:#32008F">(</span><span style="--0:#FDDA68;--1:#A84E00">"First number"</span><span style="--0:#EE9080;--1:#32008F">)</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">b</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">z</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#EEFFFF;--1:#00268F">coerce</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">number</span><span style="--0:#EE9080;--1:#32008F">()</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">describe</span><span style="--0:#EE9080;--1:#32008F">(</span><span style="--0:#FDDA68;--1:#A84E00">"Second number"</span><span style="--0:#EE9080;--1:#32008F">)</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">operator</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#D5D7D8;--1:#8F1500">z</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">enum</span><span style="--0:#EE9080;--1:#32008F">([</span><span style="--0:#FDDA68;--1:#A84E00">"+"</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#FDDA68;--1:#A84E00">"-"</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#FDDA68;--1:#A84E00">""</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#FDDA68;--1:#A84E00">"/"</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#FDDA68;--1:#A84E00">"%"</span><span style="--0:#EE9080;--1:#32008F">])</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">describe</span><span style="--0:#EE9080;--1:#32008F">(</span><span style="--0:#FDDA68;--1:#A84E00">"Arithmetic operator"</span><span style="--0:#EE9080;--1:#32008F">)</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EE9080;--1:#32008F">)</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#57C78F;--1:#00783C">needsApproval</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">async</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">({</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#B59EE1;--1:#7C008F">a</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#B59EE1;--1:#7C008F">b</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">})</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">=></span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#EEFFFF;--1:#00268F">Math</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">abs</span><span style="--0:#EE9080;--1:#32008F">(</span><span style="--0:#D5D7D8;--1:#8F1500">a</span><span style="--0:#EE9080;--1:#32008F">) </span><span style="--0:#EE9080;--1:#8F1500">></span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#B59EE1;--1:#7C008F">1000</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">||</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">Math</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">abs</span><span style="--0:#EE9080;--1:#32008F">(</span><span style="--0:#D5D7D8;--1:#8F1500">b</span><span style="--0:#EE9080;--1:#32008F">) </span><span style="--0:#EE9080;--1:#8F1500">></span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#B59EE1;--1:#7C008F">1000</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#57C78F;--1:#00783C">execute</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">async</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">({</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#B59EE1;--1:#7C008F">a</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#B59EE1;--1:#7C008F">b</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#B59EE1;--1:#7C008F">operator</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">})</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">=></span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080"> </span></span><span style="--0:#EE9080;--1:#8F1500">const</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">ops</span><span style="--0:#EE9080;--1:#8F1500">:</span><span style="--0:#EE9080;--1:#007474"> </span><span style="--0:#57C78F;--1:#00783C">Record</span><span style="--0:#89DDFF;--1:#007474"><</span><span style="--0:#57C78F;--1:#00783C">string</span><span style="--1:#007474"><span style="--0:#89DDFF">,</span><span style="--0:#EE9080"> </span><span style="--0:#89DDFF">(</span></span><span style="--0:#B59EE1;--1:#7C008F">x</span><span style="--0:#EE9080;--1:#8F1500">:</span><span style="--0:#EE9080;--1:#007474"> </span><span style="--0:#57C78F;--1:#00783C">number</span><span style="--1:#007474"><span style="--0:#89DDFF">,</span><span style="--0:#EE9080"> </span></span><span style="--0:#B59EE1;--1:#7C008F">y</span><span style="--0:#EE9080;--1:#8F1500">:</span><span style="--0:#EE9080;--1:#007474"> </span><span style="--0:#57C78F;--1:#00783C">number</span><span style="--1:#007474"><span style="--0:#89DDFF">)</span><span style="--0:#EE9080"> </span></span><span style="--0:#EE9080;--1:#8F1500">=></span><span style="--0:#EE9080;--1:#007474"> </span><span style="--0:#57C78F;--1:#00783C">number</span><span style="--1:#007474"><span style="--0:#89DDFF">></span><span style="--0:#EE9080"> </span></span><span style="--0:#EE9080;--1:#8F1500">=</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#FDDA68;--1:#A84E00">"+"</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">(</span><span style="--0:#B59EE1;--1:#7C008F">x</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#B59EE1;--1:#7C008F">y</span><span style="--0:#89DDFF;--1:#007474">)</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">=></span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#D5D7D8;--1:#8F1500">x</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">+</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#D5D7D8;--1:#8F1500">y</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#FDDA68;--1:#A84E00">"-"</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">(</span><span style="--0:#B59EE1;--1:#7C008F">x</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#B59EE1;--1:#7C008F">y</span><span style="--0:#89DDFF;--1:#007474">)</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">=></span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#D5D7D8;--1:#8F1500">x</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">-</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#D5D7D8;--1:#8F1500">y</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#FDDA68;--1:#A84E00">""</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">(</span><span style="--0:#B59EE1;--1:#7C008F">x</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#B59EE1;--1:#7C008F">y</span><span style="--0:#89DDFF;--1:#007474">)</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">=></span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#D5D7D8;--1:#8F1500">x</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500"></span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#D5D7D8;--1:#8F1500">y</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#FDDA68;--1:#A84E00">"/"</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">(</span><span style="--0:#B59EE1;--1:#7C008F">x</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#B59EE1;--1:#7C008F">y</span><span style="--0:#89DDFF;--1:#007474">)</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">=></span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#D5D7D8;--1:#8F1500">x</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">/</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#D5D7D8;--1:#8F1500">y</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#FDDA68;--1:#A84E00">"%"</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">(</span><span style="--0:#B59EE1;--1:#7C008F">x</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#B59EE1;--1:#7C008F">y</span><span style="--0:#89DDFF;--1:#007474">)</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">=></span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#D5D7D8;--1:#8F1500">x</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">%</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#D5D7D8;--1:#8F1500">y</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">};</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080"> </span></span><span style="--0:#EE9080;--1:#8F1500">if</span><span style="--0:#EE9080;--1:#32008F"> (</span><span style="--0:#D5D7D8;--1:#8F1500">operator</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">===</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#FDDA68;--1:#A84E00">"/"</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">&&</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#D5D7D8;--1:#8F1500">b</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">===</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#B59EE1;--1:#7C008F">0</span><span style="--0:#EE9080;--1:#32008F">) </span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080"> </span></span><span style="--0:#EE9080;--1:#8F1500">return</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">{</span><span style="--0:#EE9080;--1:#32008F"> error</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#FDDA68;--1:#A84E00">"Division by zero"</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">};</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">}</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080"> </span></span><span style="--0:#EE9080;--1:#8F1500">return</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">expression</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#FDDA68;--1:#A84E00"></span><span style="--0:#89DDFF;--1:#007474">${</span><span style="--0:#D5D7D8;--1:#8F1500">a</span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#FDDA68;--1:#A84E00"> </span><span style="--0:#89DDFF;--1:#007474">${</span><span style="--0:#D5D7D8;--1:#8F1500">operator</span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#FDDA68;--1:#A84E00"> </span><span style="--0:#89DDFF;--1:#007474">${</span><span style="--0:#D5D7D8;--1:#8F1500">b</span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#FDDA68;--1:#A84E00"></span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">result</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#D5D7D8;--1:#8F1500">ops</span><span style="--0:#EE9080;--1:#32008F"></span><span style="--0:#D5D7D8;--1:#8F1500">operator</span><span style="--0:#EE9080;--1:#32008F"></span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">};</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">},</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EE9080;--1:#32008F">)</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">},</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">stopWhen</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#57C78F;--1:#00783C">stepCountIs</span><span style="--0:#EE9080;--1:#32008F">(</span><span style="--0:#B59EE1;--1:#7C008F">5</span><span style="--0:#EE9080;--1:#32008F">)</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EE9080;--1:#32008F">)</span><span style="--0:#89DDFF;--1:#007474">;</span></div></div><div class="ec-line"><div class="code"> </div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#EE9080;--1:#8F1500">return</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#EEFFFF;--1:#00268F">result</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">toUIMessageStreamResponse</span><span style="--0:#EEFFFF;--1:#62676A">()</span><span style="--0:#89DDFF;--1:#007474">;</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">}</span></div></div><div class="ec-line"><div class="code"><span style="--0:#89DDFF;--1:#007474">}</span></div></div><div class="ec-line"><div class="code"> </div></div><div class="ec-line"><div class="code"><span style="--0:#EE9080;--1:#8F1500">export</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#EE9080;--1:#8F1500">default</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#EE9080;--1:#8F1500">async</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#57C78F;--1:#00783C">fetch</span><span style="--0:#89DDFF;--1:#007474">(</span><span style="--0:#B59EE1;--1:#7C008F">request</span><span style="--0:#EE9080;--1:#8F1500">:</span><span style="--0:#EEFFFF;--1:#007474"> </span><span style="--0:#57C78F;--1:#00783C">Request</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#B59EE1;--1:#7C008F">env</span><span style="--0:#EE9080;--1:#8F1500">:</span><span style="--0:#EEFFFF;--1:#007474"> </span><span style="--0:#57C78F;--1:#00783C">Env</span><span style="--0:#89DDFF;--1:#007474">)</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#EE9080;--1:#8F1500">return</span><span style="--0:#EEFFFF;--1:#62676A"> (</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EEFFFF;--1:#62676A"> </span></span><span style="--0:#EEFFFF;--1:#62676A">(</span><span style="--0:#EE9080;--1:#8F1500">await</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#57C78F;--1:#00783C">routeAgentRequest</span><span style="--0:#EEFFFF;--1:#62676A">(</span><span style="--0:#D5D7D8;--1:#8F1500">request</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#D5D7D8;--1:#8F1500">env</span><span style="--0:#EEFFFF;--1:#62676A">)) </span><span style="--0:#EE9080;--1:#8F1500">||</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#EE9080;--1:#8F1500">new</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#57C78F;--1:#00783C">Response</span><span style="--0:#EEFFFF;--1:#62676A">(</span><span style="--0:#FDDA68;--1:#A84E00">"Not found"</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">{</span><span style="--0:#EEFFFF;--1:#62676A"> status</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#B59EE1;--1:#7C008F">404</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EEFFFF;--1:#62676A">)</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EEFFFF;--1:#62676A"> </span></span><span style="--0:#EEFFFF;--1:#62676A">)</span><span style="--0:#89DDFF;--1:#007474">;</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">},</span></div></div><div class="ec-line"><div class="code"><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#EE9080;--1:#8F1500">satisfies</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#57C78F;--1:#00783C">ExportedHandler</span><span style="--0:#89DDFF;--1:#007474"><</span><span style="--0:#57C78F;--1:#00783C">Env</span><span style="--0:#89DDFF;--1:#007474">>;</span></div></div></code></pre><div class="copy"><div aria-live="polite"></div><button data-copied="Copied!" data-code="import { AIChatAgent } from "@cloudflare/ai-chat";import { routeAgentRequest } from "agents";import { createWorkersAI } from "workers-ai-provider";import { streamText, convertToModelMessages, pruneMessages, tool, stepCountIs,} from "ai";import { z } from "zod";export class ChatAgent extends AIChatAgent { async onChatMessage() { const workersai = createWorkersAI({ binding: this.env.AI }); const result = streamText({ model: workersai("@cf/meta/llama-4-scout-17b-16e-instruct"), system: "You are a helpful assistant. You can check the weather, " + "get the user's timezone, and run calculations.", messages: pruneMessages({ messages: await convertToModelMessages(this.messages), toolCalls: "before-last-2-messages", }), tools: { // Server-side tool: runs automatically on the server getWeather: tool({ description: "Get the current weather for a city", inputSchema: z.object({ city: z.string().describe("City name"), }), execute: async ({ city }) => { // Replace with a real weather API in production const conditions = ["sunny", "cloudy", "rainy"]; const temp = Math.floor(Math.random() 30) + 5; return { city, temperature: temp, condition: conditions[Math.floor(Math.random() conditions.length)], }; }, }), // Client-side tool: no execute function — the browser handles it getUserTimezone: tool({ description: "Get the user's timezone from their browser", inputSchema: z.object({}), }), // Approval tool: requires user confirmation before executing calculate: tool({ description: "Perform a math calculation with two numbers. " + "Requires user approval for large numbers.", inputSchema: z.object({ a: z.coerce.number().describe("First number"), b: z.coerce.number().describe("Second number"), operator: z .enum(["+", "-", "", "/", "%"]) .describe("Arithmetic operator"), }), needsApproval: async ({ a, b }) => Math.abs(a) > 1000 || Math.abs(b) > 1000, execute: async ({ a, b, operator }) => { const ops: Record<string, (x: number, y: number) => number> = { "+": (x, y) => x + y, "-": (x, y) => x - y, "": (x, y) => x y, "/": (x, y) => x / y, "%": (x, y) => x % y, }; if (operator === "/" && b === 0) { return { error: "Division by zero" }; } return { expression: `${a} ${operator} ${b}`, result: opsoperator, }; }, }), }, stopWhen: stepCountIs(5), }); return result.toUIMessageStreamResponse(); }}export default { async fetch(request: Request, env: Env) { return ( (await routeAgentRequest(request, env)) || new Response("Not found", { status: 404 }) ); },} satisfies ExportedHandler<Env>;"><div></div></button></div><div class="explain"><button class="explain-button" type="button" data-explain-code="" aria-label="Explain Code"><svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M9.937 15.5A2 2 0 0 0 8.5 14.063l-6.135-1.582a.5.5 0 0 1 0-.962L8.5 9.936A2 2 0 0 0 9.937 8.5l1.582-6.135a.5.5 0 0 1 .963 0L14.063 8.5A2 2 0 0 0 15.5 9.937l6.135 1.581a.5.5 0 0 1 0 .964L15.5 14.063a2 2 0 0 0-1.437 1.437l-1.582 6.135a.5.5 0 0 1-.963 0z"></path><path d="M20 3v4"></path><path d="M22 5h-4"></path><path d="M4 17v2"></path><path d="M5 18H3"></path></svg></button></div></figure></div> </div> <starlight-tabs-restore class="astro-6ilsj7c3"></starlight-tabs-restore> </starlight-tabs> <div tabindex="-1" class="heading-wrapper level-h3"><h3 id="what-each-tool-type-does">What each tool type does</h3><a class="anchor-link" href="#what-each-tool-type-does"><span aria-hidden="true" class="anchor-icon"><svg width="16" height="16" viewBox="0 0 24 24"><path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z"></path></svg></span></a></div> <table><thead><tr><th>Tool</th><th><code dir="auto">execute</code>?</th><th><code dir="auto">needsApproval</code>?</th><th>Behavior</th></tr></thead><tbody><tr><td><code dir="auto">getWeather</code></td><td>Yes</td><td>No</td><td>Runs on the server automatically</td></tr><tr><td><code dir="auto">getUserTimezone</code></td><td>No</td><td>No</td><td>Sent to the client; browser provides the result</td></tr><tr><td><code dir="auto">calculate</code></td><td>Yes</td><td>Yes (large numbers)</td><td>Pauses for user approval, then runs on server</td></tr></tbody></table> <div tabindex="-1" class="heading-wrapper level-h2"><h2 id="4-write-the-client">4. Write the client</h2><a class="anchor-link" href="#4-write-the-client"><span aria-hidden="true" class="anchor-icon"><svg width="16" height="16" viewBox="0 0 24 24"><path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z"></path></svg></span></a></div> <p>Create <code dir="auto">src/client.tsx</code>:</p> <starlight-tabs data-sync-key="workersExamples" class="astro-6ilsj7c3"> <div class="tablist-wrapper not-content astro-6ilsj7c3"> <ul role="tablist" class="astro-6ilsj7c3"> <li role="presentation" class="tab astro-6ilsj7c3"> <a role="tab" href="#tab-panel-5264" id="tab-5264" aria-selected="true" tabindex="0" class="astro-6ilsj7c3"> <svg aria-hidden="true" class="astro-6ilsj7c3 astro-r7kprdcr" width="16" height="16" viewBox="0 0 24 24" fill="currentColor" style="--sl-icon-size: 1em;"><path d="M5.376 14.300L5.376 3.352L9.286 3.352L9.286 14.300Q9.286 17.842 7.630 19.452L7.630 19.452Q6.112 20.924 3.076 20.924L3.076 20.924Q2.386 20.924 1.558 20.809Q0.730 20.694 0.224 20.464L0.224 20.464L0.638 17.336Q1.512 17.750 2.662 17.750L2.662 17.750Q3.950 17.750 4.594 17.060L4.594 17.060Q5.376 16.232 5.376 14.300L5.376 14.300ZM11.862 19.912L12.736 16.600Q13.564 17.060 14.668 17.382L14.668 17.382Q15.910 17.750 17.014 17.750L17.014 17.750Q18.394 17.750 19.084 17.267Q19.774 16.784 19.774 15.910Q19.774 15.036 19.130 14.507Q18.486 13.978 16.876 13.426L16.876 13.426Q12.138 11.770 12.138 8.274L12.138 8.274Q12.138 5.974 13.909 4.525Q15.680 3.076 18.762 3.076L18.762 3.076Q21.200 3.076 23.224 3.950L23.224 3.950L22.350 7.124L22.074 6.986Q21.246 6.664 20.740 6.526L20.740 6.526Q19.774 6.250 18.762 6.250L18.762 6.250Q17.520 6.250 16.853 6.733Q16.186 7.216 16.186 7.998Q16.186 8.780 16.922 9.286L16.922 9.286Q17.474 9.700 19.314 10.436L19.314 10.436Q21.614 11.310 22.695 12.552Q23.776 13.794 23.776 15.588L23.776 15.588Q23.776 17.888 22.028 19.314L22.028 19.314Q20.142 20.924 16.738 20.924L16.738 20.924Q15.404 20.924 13.932 20.556L13.932 20.556Q12.782 20.326 11.862 19.912L11.862 19.912Z"/></svg> JavaScript </a> </li><li role="presentation" class="tab astro-6ilsj7c3"> <a role="tab" href="#tab-panel-5265" id="tab-5265" aria-selected="false" tabindex="-1" class="astro-6ilsj7c3"> <svg aria-hidden="true" class="astro-6ilsj7c3 astro-r7kprdcr" width="16" height="16" viewBox="0 0 24 24" fill="currentColor" style="--sl-icon-size: 1em;"><path d="M11.376 6.833L11.532 6.833L7.359 6.833L7.359 19.235L4.317 19.235L4.317 6.833L0.183 6.833L0.183 4.610L11.376 4.610L11.376 6.833ZM20.892 15.491L20.892 15.491Q20.892 15.062 20.736 14.750Q20.580 14.438 20.307 14.126L20.307 14.126Q20.073 13.931 19.605 13.697L19.605 13.697Q19.293 13.580 18.513 13.268L18.513 13.268L18.201 13.151Q15.666 12.410 14.184 11.318L14.184 11.318Q12.858 10.187 12.858 8.510L12.858 8.510Q12.858 6.677 14.457 5.585L14.457 5.585Q15.900 4.492 18.299 4.492Q20.697 4.492 22.257 5.858L22.257 5.858Q23.700 7.145 23.700 9.017L23.700 9.017L20.892 9.017Q20.892 8.471 20.716 8.081Q20.541 7.691 20.151 7.301L20.151 7.301Q19.371 6.716 18.201 6.716Q17.031 6.716 16.407 7.184Q15.783 7.652 15.783 8.510L15.783 8.510Q15.783 9.212 16.524 9.758L16.524 9.758Q16.836 9.992 17.460 10.226L17.460 10.226Q17.928 10.421 18.942 10.733L18.942 10.733Q21.321 11.434 22.569 12.507Q23.817 13.580 23.817 15.491L23.817 15.491Q23.817 16.427 23.447 17.187Q23.076 17.948 22.374 18.416L22.374 18.416Q20.892 19.508 18.474 19.508L18.474 19.508Q15.900 19.508 14.301 18.260L14.301 18.260Q12.468 16.817 12.624 14.750L12.624 14.750L15.549 14.750Q15.549 15.998 16.407 16.700L16.407 16.700Q16.758 16.973 17.343 17.129Q17.928 17.285 18.591 17.285L18.591 17.285Q19.917 17.285 20.424 16.817L20.424 16.817Q20.892 16.076 20.892 15.491Z"/></svg> TypeScript </a> </li> </ul> </div> <div id="tab-panel-5264" aria-labelledby="tab-5264" role="tabpanel"> <div class="expressive-code"><figure class="frame has-title not-content" style="--lnWidth:3ch"><figcaption class="header"><span class="title">JavaScript</span></figcaption><pre data-language="js"><code><div class="ec-line"><div class="code"><span style="--0:#EE9080;--1:#8F1500">import </span><span style="--0:#89DDFF;--1:#007474">{</span><span style="--1:#8F1500"><span style="--0:#EE9080"> </span><span style="--0:#D5D7D8">useAgent</span><span style="--0:#EE9080"> </span></span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EE9080;--1:#8F1500"> from </span><span style="--0:#FDDA68;--1:#A84E00">"agents/react"</span><span style="--0:#89DDFF;--1:#007474">;</span></div></div><div class="ec-line"><div class="code"><span style="--0:#EE9080;--1:#8F1500">import </span><span style="--0:#89DDFF;--1:#007474">{</span><span style="--1:#8F1500"><span style="--0:#EE9080"> </span><span style="--0:#D5D7D8">useAgentChat</span></span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--1:#8F1500"><span style="--0:#EE9080"> </span><span style="--0:#D5D7D8">getToolApproval</span><span style="--0:#EE9080"> </span></span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EE9080;--1:#8F1500"> from </span><span style="--0:#FDDA68;--1:#A84E00">"@cloudflare/ai-chat/react"</span><span style="--0:#89DDFF;--1:#007474">;</span></div></div><div class="ec-line"><div class="code"> </div></div><div class="ec-line"><div class="code"><span style="--0:#EE9080;--1:#8F1500">function</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#57C78F;--1:#00783C">Chat</span><span style="--0:#89DDFF;--1:#007474">()</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#EE9080;--1:#8F1500">const</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">agent</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">=</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#57C78F;--1:#00783C">useAgent</span><span style="--0:#EE9080;--1:#32008F">(</span><span style="--0:#89DDFF;--1:#007474">{</span><span style="--0:#EE9080;--1:#32008F"> agent</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#FDDA68;--1:#A84E00">"ChatAgent"</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EE9080;--1:#32008F">)</span><span style="--0:#89DDFF;--1:#007474">;</span></div></div><div class="ec-line"><div class="code"> </div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#EE9080;--1:#8F1500">const</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#EEFFFF;--1:#00268F">messages</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#EEFFFF;--1:#00268F">sendMessage</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#EEFFFF;--1:#00268F">clearHistory</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#EEFFFF;--1:#00268F">addToolApprovalResponse</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#EEFFFF;--1:#00268F">status</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">=</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#57C78F;--1:#00783C">useAgentChat</span><span style="--0:#EE9080;--1:#32008F">(</span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#D5D7D8;--1:#8F1500">agent</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#A9A9A5;--0fs:italic;--1:#62676A;--1fs:italic">// Handle client-side tools (tools with no server execute function)</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#57C78F;--1:#00783C">onToolCall</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">async</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">({</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#B59EE1;--1:#7C008F">toolCall</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#B59EE1;--1:#7C008F">addToolOutput</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">})</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">=></span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080"> </span></span><span style="--0:#EE9080;--1:#8F1500">if</span><span style="--0:#EE9080;--1:#32008F"> (</span><span style="--0:#EEFFFF;--1:#00268F">toolCall</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#EEFFFF;--1:#00268F">toolName</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">===</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#FDDA68;--1:#A84E00">"getUserTimezone"</span><span style="--0:#EE9080;--1:#32008F">) </span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#57C78F;--1:#00783C">addToolOutput</span><span style="--0:#EE9080;--1:#32008F">(</span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">toolCallId</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">toolCall</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#EEFFFF;--1:#00268F">toolCallId</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">output</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">timezone</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">Intl</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">DateTimeFormat</span><span style="--0:#EE9080;--1:#32008F">()</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">resolvedOptions</span><span style="--0:#EE9080;--1:#32008F">()</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#EEFFFF;--1:#00268F">timeZone</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">localTime</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">new</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#57C78F;--1:#00783C">Date</span><span style="--0:#EE9080;--1:#32008F">()</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">toLocaleTimeString</span><span style="--0:#EE9080;--1:#32008F">()</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">},</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EE9080;--1:#32008F">)</span><span style="--0:#89DDFF;--1:#007474">;</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">}</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">},</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EE9080;--1:#32008F">)</span><span style="--0:#89DDFF;--1:#007474">;</span></div></div><div class="ec-line"><div class="code"> </div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#EE9080;--1:#8F1500">return</span><span style="--0:#EEFFFF;--1:#62676A"> (</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474"><</span><span style="--0:#F38B90;--1:#A54E53">div</span><span style="--0:#89DDFF;--1:#007474">></span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#89DDFF;--1:#007474"> </span></span><span style="--0:#89DDFF;--1:#007474"><</span><span style="--0:#F38B90;--1:#A54E53">div</span><span style="--0:#89DDFF;--1:#007474">></span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#89DDFF;--1:#007474"> </span></span><span style="--0:#89DDFF;--1:#007474">{</span><span style="--0:#EEFFFF;--1:#00268F">messages</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">map</span><span style="--0:#89DDFF;--1:#007474">((</span><span style="--0:#B59EE1;--1:#7C008F">msg</span><span style="--0:#89DDFF;--1:#007474">) </span><span style="--0:#EE9080;--1:#8F1500">=></span><span style="--0:#89DDFF;--1:#007474"> (</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#89DDFF;--1:#007474"> </span></span><span style="--0:#89DDFF;--1:#007474"><</span><span style="--0:#F38B90;--1:#A54E53">div</span><span style="--0:#89DDFF;--1:#007474"> </span><span style="--0:#C895EA;--1:#7C5B92">key</span><span style="--0:#EE9080;--1:#8F1500">=</span><span style="--0:#89DDFF;--1:#007474">{</span><span style="--0:#EEFFFF;--1:#00268F">msg</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#EEFFFF;--1:#00268F">id</span><span style="--0:#89DDFF;--1:#007474">}></span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#89DDFF;--1:#007474"> </span></span><span style="--0:#89DDFF;--1:#007474"><</span><span style="--0:#F38B90;--1:#A54E53">strong</span><span style="--0:#89DDFF;--1:#007474">>{</span><span style="--0:#EEFFFF;--1:#00268F">msg</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#EEFFFF;--1:#00268F">role</span><span style="--0:#89DDFF;--1:#007474">}:</</span><span style="--0:#F38B90;--1:#A54E53">strong</span><span style="--0:#89DDFF;--1:#007474">></span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#89DDFF;--1:#007474"> </span></span><span style="--0:#89DDFF;--1:#007474">{</span><span style="--0:#EEFFFF;--1:#00268F">msg</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#EEFFFF;--1:#00268F">parts</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">map</span><span style="--0:#89DDFF;--1:#007474">((</span><span style="--0:#B59EE1;--1:#7C008F">part</span><span style="--0:#89DDFF;--1:#007474">, </span><span style="--0:#B59EE1;--1:#7C008F">i</span><span style="--0:#89DDFF;--1:#007474">) </span><span style="--0:#EE9080;--1:#8F1500">=></span><span style="--0:#89DDFF;--1:#007474"> {</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#EE9080;--1:#8F1500">if</span><span style="--0:#89DDFF;--1:#007474"> (</span><span style="--0:#EEFFFF;--1:#00268F">part</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#EEFFFF;--1:#00268F">type</span><span style="--0:#89DDFF;--1:#007474"> </span><span style="--0:#EE9080;--1:#8F1500">===</span><span style="--0:#89DDFF;--1:#007474"> </span><span style="--0:#FDDA68;--1:#A84E00">"text"</span><span style="--0:#89DDFF;--1:#007474">) {</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#EE9080;--1:#8F1500">return</span><span style="--0:#89DDFF;--1:#007474"> <</span><span style="--0:#F38B90;--1:#A54E53">span</span><span style="--0:#89DDFF;--1:#007474"> </span><span style="--0:#C895EA;--1:#7C5B92">key</span><span style="--0:#EE9080;--1:#8F1500">=</span><span style="--0:#89DDFF;--1:#007474">{</span><span style="--0:#D5D7D8;--1:#8F1500">i</span><span style="--0:#89DDFF;--1:#007474">}>{</span><span style="--0:#EEFFFF;--1:#00268F">part</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#EEFFFF;--1:#00268F">text</span><span style="--0:#89DDFF;--1:#007474">}</</span><span style="--0:#F38B90;--1:#A54E53">span</span><span style="--0:#89DDFF;--1:#007474">>;</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#89DDFF;--1:#007474"> </span></span><span style="--0:#89DDFF;--1:#007474">}</span></div></div><div class="ec-line"><div class="code"> </div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#A9A9A5;--0fs:italic;--1:#62676A;--1fs:italic">// Render approval UI for tools that need confirmation</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#EE9080;--1:#8F1500">if</span><span style="--0:#89DDFF;--1:#007474"> (</span><span style="--0:#EEFFFF;--1:#00268F">part</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#EEFFFF;--1:#00268F">state</span><span style="--0:#89DDFF;--1:#007474"> </span><span style="--0:#EE9080;--1:#8F1500">===</span><span style="--0:#89DDFF;--1:#007474"> </span><span style="--0:#FDDA68;--1:#A84E00">"approval-requested"</span><span style="--0:#89DDFF;--1:#007474">) {</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#EE9080;--1:#8F1500">const</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">approval</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">=</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#57C78F;--1:#00783C">getToolApproval</span><span style="--0:#EE9080;--1:#32008F">(</span><span style="--0:#D5D7D8;--1:#8F1500">part</span><span style="--0:#EE9080;--1:#32008F">)</span><span style="--0:#89DDFF;--1:#007474">;</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#EE9080;--1:#8F1500">if</span><span style="--0:#89DDFF;--1:#007474"> (</span><span style="--1:#8F1500"><span style="--0:#EE9080">!</span><span style="--0:#D5D7D8">approval</span></span><span style="--0:#89DDFF;--1:#007474">) </span><span style="--0:#EE9080;--1:#8F1500">return</span><span style="--0:#89DDFF;--1:#007474"> </span><span style="--0:#EE9080;--1:#32008F">null</span><span style="--0:#89DDFF;--1:#007474">;</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#EE9080;--1:#8F1500">return</span><span style="--0:#89DDFF;--1:#007474"> (</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#89DDFF;--1:#007474"> </span></span><span style="--0:#89DDFF;--1:#007474"><</span><span style="--0:#F38B90;--1:#A54E53">div</span><span style="--0:#89DDFF;--1:#007474"> </span><span style="--0:#C895EA;--1:#7C5B92">key</span><span style="--0:#EE9080;--1:#8F1500">=</span><span style="--0:#89DDFF;--1:#007474">{</span><span style="--0:#EEFFFF;--1:#00268F">part</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#EEFFFF;--1:#00268F">toolCallId</span><span style="--0:#89DDFF;--1:#007474">}></span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#89DDFF;--1:#007474"> </span></span><span style="--0:#89DDFF;--1:#007474"><</span><span style="--0:#F38B90;--1:#A54E53">p</span><span style="--0:#89DDFF;--1:#007474">></span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#89DDFF;--1:#007474"> </span></span><span style="--0:#89DDFF;--1:#007474">Approve <</span><span style="--0:#F38B90;--1:#A54E53">strong</span><span style="--0:#89DDFF;--1:#007474">>{</span><span style="--0:#EEFFFF;--1:#00268F">part</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#EEFFFF;--1:#00268F">toolName</span><span style="--0:#89DDFF;--1:#007474">}</</span><span style="--0:#F38B90;--1:#A54E53">strong</span><span style="--0:#89DDFF;--1:#007474">>?</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#89DDFF;--1:#007474"> </span></span><span style="--0:#89DDFF;--1:#007474"></</span><span style="--0:#F38B90;--1:#A54E53">p</span><span style="--0:#89DDFF;--1:#007474">></span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#89DDFF;--1:#007474"> </span></span><span style="--0:#89DDFF;--1:#007474"><</span><span style="--0:#F38B90;--1:#A54E53">pre</span><span style="--0:#89DDFF;--1:#007474">>{</span><span style="--0:#EEFFFF;--1:#00268F">JSON</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">stringify</span><span style="--0:#89DDFF;--1:#007474">(</span><span style="--0:#EEFFFF;--1:#00268F">part</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#EEFFFF;--1:#00268F">input</span><span style="--0:#89DDFF;--1:#007474">, </span><span style="--0:#EE9080;--1:#32008F">null</span><span style="--0:#89DDFF;--1:#007474">, </span><span style="--0:#B59EE1;--1:#7C008F">2</span><span style="--0:#89DDFF;--1:#007474">)}</</span><span style="--0:#F38B90;--1:#A54E53">pre</span><span style="--0:#89DDFF;--1:#007474">></span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#89DDFF;--1:#007474"> </span></span><span style="--0:#89DDFF;--1:#007474"><</span><span style="--0:#F38B90;--1:#A54E53">button</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#C895EA;--1:#7C5B92">onClick</span><span style="--0:#EE9080;--1:#8F1500">=</span><span style="--0:#89DDFF;--1:#007474">{() </span><span style="--0:#EE9080;--1:#8F1500">=></span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#57C78F;--1:#00783C">addToolApprovalResponse</span><span style="--0:#89DDFF;--1:#007474">({</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#89DDFF;--1:#007474"> </span></span><span style="--0:#89DDFF;--1:#007474">id: </span><span style="--0:#EEFFFF;--1:#00268F">approval</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#EEFFFF;--1:#00268F">id</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#89DDFF;--1:#007474"> </span></span><span style="--0:#89DDFF;--1:#007474">approved: </span><span style="--0:#EE9080;--1:#32008F">true</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#89DDFF;--1:#007474"> </span></span><span style="--0:#89DDFF;--1:#007474">})</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#89DDFF;--1:#007474"> </span></span><span style="--0:#89DDFF;--1:#007474">}</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#89DDFF;--1:#007474"> </span></span><span style="--0:#89DDFF;--1:#007474">></span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#89DDFF;--1:#007474"> </span></span><span style="--0:#89DDFF;--1:#007474">Approve</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#89DDFF;--1:#007474"> </span></span><span style="--0:#89DDFF;--1:#007474"></</span><span style="--0:#F38B90;--1:#A54E53">button</span><span style="--0:#89DDFF;--1:#007474">></span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#89DDFF;--1:#007474"> </span></span><span style="--0:#89DDFF;--1:#007474"><</span><span style="--0:#F38B90;--1:#A54E53">button</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#C895EA;--1:#7C5B92">onClick</span><span style="--0:#EE9080;--1:#8F1500">=</span><span style="--0:#89DDFF;--1:#007474">{() </span><span style="--0:#EE9080;--1:#8F1500">=></span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#57C78F;--1:#00783C">addToolApprovalResponse</span><span style="--0:#89DDFF;--1:#007474">({</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#89DDFF;--1:#007474"> </span></span><span style="--0:#89DDFF;--1:#007474">id: </span><span style="--0:#EEFFFF;--1:#00268F">approval</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#EEFFFF;--1:#00268F">id</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#89DDFF;--1:#007474"> </span></span><span style="--0:#89DDFF;--1:#007474">approved: </span><span style="--0:#EE9080;--1:#32008F">false</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#89DDFF;--1:#007474"> </span></span><span style="--0:#89DDFF;--1:#007474">})</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#89DDFF;--1:#007474"> </span></span><span style="--0:#89DDFF;--1:#007474">}</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#89DDFF;--1:#007474"> </span></span><span style="--0:#89DDFF;--1:#007474">></span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#89DDFF;--1:#007474"> </span></span><span style="--0:#89DDFF;--1:#007474">Reject</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#89DDFF;--1:#007474"> </span></span><span style="--0:#89DDFF;--1:#007474"></</span><span style="--0:#F38B90;--1:#A54E53">button</span><span style="--0:#89DDFF;--1:#007474">></span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#89DDFF;--1:#007474"> </span></span><span style="--0:#89DDFF;--1:#007474"></</span><span style="--0:#F38B90;--1:#A54E53">div</span><span style="--0:#89DDFF;--1:#007474">></span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#89DDFF;--1:#007474"> </span></span><span style="--0:#89DDFF;--1:#007474">);</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#89DDFF;--1:#007474"> </span></span><span style="--0:#89DDFF;--1:#007474">}</span></div></div><div class="ec-line"><div class="code"> </div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#A9A9A5;--0fs:italic;--1:#62676A;--1fs:italic">// Show completed tool results</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#EE9080;--1:#8F1500">if</span><span style="--0:#89DDFF;--1:#007474"> (</span><span style="--0:#EEFFFF;--1:#00268F">part</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#EEFFFF;--1:#00268F">state</span><span style="--0:#89DDFF;--1:#007474"> </span><span style="--0:#EE9080;--1:#8F1500">===</span><span style="--0:#89DDFF;--1:#007474"> </span><span style="--0:#FDDA68;--1:#A84E00">"output-available"</span><span style="--0:#89DDFF;--1:#007474">) {</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#EE9080;--1:#8F1500">return</span><span style="--0:#89DDFF;--1:#007474"> (</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#89DDFF;--1:#007474"> </span></span><span style="--0:#89DDFF;--1:#007474"><</span><span style="--0:#F38B90;--1:#A54E53">details</span><span style="--0:#89DDFF;--1:#007474"> </span><span style="--0:#C895EA;--1:#7C5B92">key</span><span style="--0:#EE9080;--1:#8F1500">=</span><span style="--0:#89DDFF;--1:#007474">{</span><span style="--0:#EEFFFF;--1:#00268F">part</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#EEFFFF;--1:#00268F">toolCallId</span><span style="--0:#89DDFF;--1:#007474">}></span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#89DDFF;--1:#007474"> </span></span><span style="--0:#89DDFF;--1:#007474"><</span><span style="--0:#F38B90;--1:#A54E53">summary</span><span style="--0:#89DDFF;--1:#007474">>{</span><span style="--0:#EEFFFF;--1:#00268F">part</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#EEFFFF;--1:#00268F">toolName</span><span style="--0:#89DDFF;--1:#007474">} result</</span><span style="--0:#F38B90;--1:#A54E53">summary</span><span style="--0:#89DDFF;--1:#007474">></span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#89DDFF;--1:#007474"> </span></span><span style="--0:#89DDFF;--1:#007474"><</span><span style="--0:#F38B90;--1:#A54E53">pre</span><span style="--0:#89DDFF;--1:#007474">>{</span><span style="--0:#EEFFFF;--1:#00268F">JSON</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">stringify</span><span style="--0:#89DDFF;--1:#007474">(</span><span style="--0:#EEFFFF;--1:#00268F">part</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#EEFFFF;--1:#00268F">output</span><span style="--0:#89DDFF;--1:#007474">, </span><span style="--0:#EE9080;--1:#32008F">null</span><span style="--0:#89DDFF;--1:#007474">, </span><span style="--0:#B59EE1;--1:#7C008F">2</span><span style="--0:#89DDFF;--1:#007474">)}</</span><span style="--0:#F38B90;--1:#A54E53">pre</span><span style="--0:#89DDFF;--1:#007474">></span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#89DDFF;--1:#007474"> </span></span><span style="--0:#89DDFF;--1:#007474"></</span><span style="--0:#F38B90;--1:#A54E53">details</span><span style="--0:#89DDFF;--1:#007474">></span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#89DDFF;--1:#007474"> </span></span><span style="--0:#89DDFF;--1:#007474">);</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#89DDFF;--1:#007474"> </span></span><span style="--0:#89DDFF;--1:#007474">}</span></div></div><div class="ec-line"><div class="code"> </div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#EE9080;--1:#8F1500">return</span><span style="--0:#89DDFF;--1:#007474"> </span><span style="--0:#EE9080;--1:#32008F">null</span><span style="--0:#89DDFF;--1:#007474">;</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#89DDFF;--1:#007474"> </span></span><span style="--0:#89DDFF;--1:#007474">})}</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#89DDFF;--1:#007474"> </span></span><span style="--0:#89DDFF;--1:#007474"></</span><span style="--0:#F38B90;--1:#A54E53">div</span><span style="--0:#89DDFF;--1:#007474">></span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#89DDFF;--1:#007474"> </span></span><span style="--0:#89DDFF;--1:#007474">))}</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#89DDFF;--1:#007474"> </span></span><span style="--0:#89DDFF;--1:#007474"></</span><span style="--0:#F38B90;--1:#A54E53">div</span><span style="--0:#89DDFF;--1:#007474">></span></div></div><div class="ec-line"><div class="code"> </div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#89DDFF;--1:#007474"> </span></span><span style="--0:#89DDFF;--1:#007474"><</span><span style="--0:#F38B90;--1:#A54E53">form</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#C895EA;--1:#7C5B92">onSubmit</span><span style="--0:#EE9080;--1:#8F1500">=</span><span style="--0:#89DDFF;--1:#007474">{(</span><span style="--0:#B59EE1;--1:#7C008F">e</span><span style="--0:#89DDFF;--1:#007474">) </span><span style="--0:#EE9080;--1:#8F1500">=></span><span style="--0:#89DDFF;--1:#007474"> {</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#EEFFFF;--1:#00268F">e</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">preventDefault</span><span style="--0:#89DDFF;--1:#007474">();</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#EE9080;--1:#8F1500">const</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">input</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">=</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">e</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#EEFFFF;--1:#00268F">currentTarget</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#EEFFFF;--1:#00268F">elements</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">namedItem</span><span style="--0:#EE9080;--1:#32008F">(</span><span style="--0:#FDDA68;--1:#A84E00">"message"</span><span style="--0:#EE9080;--1:#32008F">)</span><span style="--0:#89DDFF;--1:#007474">;</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#57C78F;--1:#00783C">sendMessage</span><span style="--0:#89DDFF;--1:#007474">({ text: </span><span style="--0:#EEFFFF;--1:#00268F">input</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#EEFFFF;--1:#00268F">value</span><span style="--0:#89DDFF;--1:#007474"> });</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#EEFFFF;--1:#00268F">input</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#EEFFFF;--1:#00268F">value</span><span style="--0:#89DDFF;--1:#007474"> </span><span style="--0:#EE9080;--1:#8F1500">=</span><span style="--0:#89DDFF;--1:#007474"> </span><span style="--0:#FDDA68;--1:#A84E00">""</span><span style="--0:#89DDFF;--1:#007474">;</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#89DDFF;--1:#007474"> </span></span><span style="--0:#89DDFF;--1:#007474">}}</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#89DDFF;--1:#007474"> </span></span><span style="--0:#89DDFF;--1:#007474">></span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#89DDFF;--1:#007474"> </span></span><span style="--0:#89DDFF;--1:#007474"><</span><span style="--0:#F38B90;--1:#A54E53">input</span><span style="--0:#89DDFF;--1:#007474"> </span><span style="--0:#C895EA;--1:#7C5B92">name</span><span style="--0:#EE9080;--1:#8F1500">=</span><span style="--0:#FDDA68;--1:#A84E00">"message"</span><span style="--0:#89DDFF;--1:#007474"> </span><span style="--0:#C895EA;--1:#7C5B92">placeholder</span><span style="--0:#EE9080;--1:#8F1500">=</span><span style="--0:#FDDA68;--1:#A84E00">"Try: What's the weather in Paris?"</span><span style="--0:#89DDFF;--1:#007474"> /></span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#89DDFF;--1:#007474"> </span></span><span style="--0:#89DDFF;--1:#007474"><</span><span style="--0:#F38B90;--1:#A54E53">button</span><span style="--0:#89DDFF;--1:#007474"> </span><span style="--0:#C895EA;--1:#7C5B92">type</span><span style="--0:#EE9080;--1:#8F1500">=</span><span style="--0:#FDDA68;--1:#A84E00">"submit"</span><span style="--0:#89DDFF;--1:#007474"> </span><span style="--0:#C895EA;--1:#7C5B92">disabled</span><span style="--0:#EE9080;--1:#8F1500">=</span><span style="--0:#89DDFF;--1:#007474">{</span><span style="--0:#D5D7D8;--1:#8F1500">status</span><span style="--0:#89DDFF;--1:#007474"> </span><span style="--0:#EE9080;--1:#8F1500">===</span><span style="--0:#89DDFF;--1:#007474"> </span><span style="--0:#FDDA68;--1:#A84E00">"streaming"</span><span style="--0:#89DDFF;--1:#007474">}></span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#89DDFF;--1:#007474"> </span></span><span style="--0:#89DDFF;--1:#007474">Send</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#89DDFF;--1:#007474"> </span></span><span style="--0:#89DDFF;--1:#007474"></</span><span style="--0:#F38B90;--1:#A54E53">button</span><span style="--0:#89DDFF;--1:#007474">></span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#89DDFF;--1:#007474"> </span></span><span style="--0:#89DDFF;--1:#007474"></</span><span style="--0:#F38B90;--1:#A54E53">form</span><span style="--0:#89DDFF;--1:#007474">></span></div></div><div class="ec-line"><div class="code"> </div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#89DDFF;--1:#007474"> </span></span><span style="--0:#89DDFF;--1:#007474"><</span><span style="--0:#F38B90;--1:#A54E53">button</span><span style="--0:#89DDFF;--1:#007474"> </span><span style="--0:#C895EA;--1:#7C5B92">onClick</span><span style="--0:#EE9080;--1:#8F1500">=</span><span style="--0:#89DDFF;--1:#007474">{</span><span style="--0:#D5D7D8;--1:#8F1500">clearHistory</span><span style="--0:#89DDFF;--1:#007474">}>Clear history</</span><span style="--0:#F38B90;--1:#A54E53">button</span><span style="--0:#89DDFF;--1:#007474">></span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#89DDFF;--1:#007474"> </span></span><span style="--0:#89DDFF;--1:#007474"></</span><span style="--0:#F38B90;--1:#A54E53">div</span><span style="--0:#89DDFF;--1:#007474">></span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EEFFFF;--1:#62676A"> </span></span><span style="--0:#EEFFFF;--1:#62676A">)</span><span style="--0:#89DDFF;--1:#007474">;</span></div></div><div class="ec-line"><div class="code"><span style="--0:#89DDFF;--1:#007474">}</span></div></div><div class="ec-line"><div class="code"> </div></div><div class="ec-line"><div class="code"><span style="--0:#EE9080;--1:#8F1500">export</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#EE9080;--1:#8F1500">default</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#EE9080;--1:#8F1500">function</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#57C78F;--1:#00783C">App</span><span style="--0:#89DDFF;--1:#007474">()</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#EE9080;--1:#8F1500">return</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474"><</span><span style="--0:#57C78F;--1:#00783C">Chat</span><span style="--0:#89DDFF;--1:#007474"> />;</span></div></div><div class="ec-line"><div class="code"><span style="--0:#89DDFF;--1:#007474">}</span></div></div></code></pre><div class="copy"><div aria-live="polite"></div><button data-copied="Copied!" data-code="import { useAgent } from "agents/react";import { useAgentChat, getToolApproval } from "@cloudflare/ai-chat/react";function Chat() { const agent = useAgent({ agent: "ChatAgent" }); const { messages, sendMessage, clearHistory, addToolApprovalResponse, status, } = useAgentChat({ agent, // Handle client-side tools (tools with no server execute function) onToolCall: async ({ toolCall, addToolOutput }) => { if (toolCall.toolName === "getUserTimezone") { addToolOutput({ toolCallId: toolCall.toolCallId, output: { timezone: Intl.DateTimeFormat().resolvedOptions().timeZone, localTime: new Date().toLocaleTimeString(), }, }); } }, }); return ( <div> <div> {messages.map((msg) => ( <div key={msg.id}> <strong>{msg.role}:</strong> {msg.parts.map((part, i) => { if (part.type === "text") { return <span key={i}>{part.text}</span>; } // Render approval UI for tools that need confirmation if (part.state === "approval-requested") { const approval = getToolApproval(part); if (!approval) return null; return ( <div key={part.toolCallId}> <p> Approve <strong>{part.toolName}</strong>? </p> <pre>{JSON.stringify(part.input, null, 2)}</pre> <button onClick={() => addToolApprovalResponse({ id: approval.id, approved: true, }) } > Approve </button> <button onClick={() => addToolApprovalResponse({ id: approval.id, approved: false, }) } > Reject </button> </div> ); } // Show completed tool results if (part.state === "output-available") { return ( <details key={part.toolCallId}> <summary>{part.toolName} result</summary> <pre>{JSON.stringify(part.output, null, 2)}</pre> </details> ); } return null; })} </div> ))} </div> <form onSubmit={(e) => { e.preventDefault(); const input = e.currentTarget.elements.namedItem("message"); sendMessage({ text: input.value }); input.value = ""; }} > <input name="message" placeholder="Try: What's the weather in Paris?" /> <button type="submit" disabled={status === "streaming"}> Send </button> </form> <button onClick={clearHistory}>Clear history</button> </div> );}export default function App() { return <Chat />;}"><div></div></button></div><div class="explain"><button class="explain-button" type="button" data-explain-code="" aria-label="Explain Code"><svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M9.937 15.5A2 2 0 0 0 8.5 14.063l-6.135-1.582a.5.5 0 0 1 0-.962L8.5 9.936A2 2 0 0 0 9.937 8.5l1.582-6.135a.5.5 0 0 1 .963 0L14.063 8.5A2 2 0 0 0 15.5 9.937l6.135 1.581a.5.5 0 0 1 0 .964L15.5 14.063a2 2 0 0 0-1.437 1.437l-1.582 6.135a.5.5 0 0 1-.963 0z"></path><path d="M20 3v4"></path><path d="M22 5h-4"></path><path d="M4 17v2"></path><path d="M5 18H3"></path></svg></button></div></figure></div> </div> <div id="tab-panel-5265" aria-labelledby="tab-5265" role="tabpanel" hidden> <div class="expressive-code"><figure class="frame has-title not-content" style="--lnWidth:3ch"><figcaption class="header"><span class="title">TypeScript</span></figcaption><pre data-language="ts"><code><div class="ec-line"><div class="code"><span style="--0:#EE9080;--1:#8F1500">import </span><span style="--0:#89DDFF;--1:#007474">{</span><span style="--1:#8F1500"><span style="--0:#EE9080"> </span><span style="--0:#D5D7D8">useAgent</span><span style="--0:#EE9080"> </span></span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EE9080;--1:#8F1500"> from </span><span style="--0:#FDDA68;--1:#A84E00">"agents/react"</span><span style="--0:#89DDFF;--1:#007474">;</span></div></div><div class="ec-line"><div class="code"><span style="--0:#EE9080;--1:#8F1500">import </span><span style="--0:#89DDFF;--1:#007474">{</span><span style="--1:#8F1500"><span style="--0:#EE9080"> </span><span style="--0:#D5D7D8">useAgentChat</span></span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--1:#8F1500"><span style="--0:#EE9080"> </span><span style="--0:#D5D7D8">getToolApproval</span><span style="--0:#EE9080"> </span></span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EE9080;--1:#8F1500"> from </span><span style="--0:#FDDA68;--1:#A84E00">"@cloudflare/ai-chat/react"</span><span style="--0:#89DDFF;--1:#007474">;</span></div></div><div class="ec-line"><div class="code"> </div></div><div class="ec-line"><div class="code"><span style="--0:#EE9080;--1:#8F1500">function</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#57C78F;--1:#00783C">Chat</span><span style="--0:#89DDFF;--1:#007474">()</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#EE9080;--1:#8F1500">const</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">agent</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">=</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#57C78F;--1:#00783C">useAgent</span><span style="--0:#EE9080;--1:#32008F">(</span><span style="--0:#89DDFF;--1:#007474">{</span><span style="--0:#EE9080;--1:#32008F"> agent</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#FDDA68;--1:#A84E00">"ChatAgent"</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EE9080;--1:#32008F">)</span><span style="--0:#89DDFF;--1:#007474">;</span></div></div><div class="ec-line"><div class="code"> </div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#EE9080;--1:#8F1500">const</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">{</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">messages</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">sendMessage</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">clearHistory</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">addToolApprovalResponse</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">status</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">=</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#57C78F;--1:#00783C">useAgentChat</span><span style="--0:#EE9080;--1:#32008F">(</span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#D5D7D8;--1:#8F1500">agent</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#A9A9A5;--0fs:italic;--1:#62676A;--1fs:italic">// Handle client-side tools (tools with no server execute function)</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#57C78F;--1:#00783C">onToolCall</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">async</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">({</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#B59EE1;--1:#7C008F">toolCall</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#B59EE1;--1:#7C008F">addToolOutput</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">})</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">=></span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080"> </span></span><span style="--0:#EE9080;--1:#8F1500">if</span><span style="--0:#EE9080;--1:#32008F"> (</span><span style="--0:#EEFFFF;--1:#00268F">toolCall</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#EEFFFF;--1:#00268F">toolName</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">===</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#FDDA68;--1:#A84E00">"getUserTimezone"</span><span style="--0:#EE9080;--1:#32008F">) </span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#57C78F;--1:#00783C">addToolOutput</span><span style="--0:#EE9080;--1:#32008F">(</span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">toolCallId</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">toolCall</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#EEFFFF;--1:#00268F">toolCallId</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">output</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">timezone</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">Intl</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">DateTimeFormat</span><span style="--0:#EE9080;--1:#32008F">()</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">resolvedOptions</span><span style="--0:#EE9080;--1:#32008F">()</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#EEFFFF;--1:#00268F">timeZone</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">localTime</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">new</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#57C78F;--1:#00783C">Date</span><span style="--0:#EE9080;--1:#32008F">()</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">toLocaleTimeString</span><span style="--0:#EE9080;--1:#32008F">()</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">},</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EE9080;--1:#32008F">)</span><span style="--0:#89DDFF;--1:#007474">;</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">}</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">},</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EE9080;--1:#32008F">)</span><span style="--0:#89DDFF;--1:#007474">;</span></div></div><div class="ec-line"><div class="code"> </div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#EE9080;--1:#8F1500">return</span><span style="--0:#EEFFFF;--1:#62676A"> (</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EEFFFF;--1:#62676A"> </span></span><span style="--0:#EEFFFF;--1:#62676A"><</span><span style="--0:#57C78F;--1:#00783C">div</span><span style="--0:#EEFFFF;--1:#62676A">></span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EEFFFF;--1:#62676A"> </span></span><span style="--0:#EEFFFF;--1:#62676A"><</span><span style="--0:#57C78F;--1:#00783C">div</span><span style="--0:#EEFFFF;--1:#62676A">></span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">{</span><span style="--0:#B59EE1;--1:#7C008F">messages</span><span style="--0:#EEFFFF;--1:#62676A">.</span><span style="--0:#B59EE1;--1:#7C008F">map</span><span style="--0:#EEFFFF;--1:#62676A">((</span><span style="--0:#B59EE1;--1:#7C008F">msg</span><span style="--0:#EEFFFF;--1:#62676A">) </span><span style="--0:#EE9080;--1:#8F1500">=></span><span style="--0:#EEFFFF;--1:#62676A"> (</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--1:#8F1500"><span style="--0:#EE9080"><</span><span style="--0:#D5D7D8">div</span></span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--1:#8F1500"><span style="--0:#D5D7D8">key</span><span style="--0:#EE9080">=</span></span><span style="--0:#89DDFF;--1:#007474">{</span><span style="--0:#EEFFFF;--1:#62676A">msg.</span><span style="--0:#D5D7D8;--1:#8F1500">id</span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EE9080;--1:#8F1500">></span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EEFFFF;--1:#62676A"> </span></span><span style="--0:#EEFFFF;--1:#62676A"><</span><span style="--0:#57C78F;--1:#00783C">strong</span><span style="--0:#EEFFFF;--1:#62676A">></span><span style="--0:#89DDFF;--1:#007474">{</span><span style="--0:#EEFFFF;--1:#62676A">msg.</span><span style="--0:#D5D7D8;--1:#8F1500">role</span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EE9080;--1:#8F1500">:</span><span style="--1:#007474"><span style="--0:#89DDFF"><</span><span style="--0:#EEFFFF">/</span></span><span style="--0:#57C78F;--1:#00783C">strong</span><span style="--0:#89DDFF;--1:#007474">></span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">{</span><span style="--0:#B59EE1;--1:#7C008F">msg</span><span style="--0:#EEFFFF;--1:#62676A">.</span><span style="--0:#B59EE1;--1:#7C008F">parts</span><span style="--0:#EEFFFF;--1:#62676A">.</span><span style="--0:#B59EE1;--1:#7C008F">map</span><span style="--0:#EEFFFF;--1:#62676A">((</span><span style="--0:#B59EE1;--1:#7C008F">part</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#B59EE1;--1:#7C008F">i</span><span style="--0:#EEFFFF;--1:#62676A">) </span><span style="--0:#EE9080;--1:#8F1500">=></span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#57C78F;--1:#00783C">if</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">(</span><span style="--0:#EEFFFF;--1:#62676A">part.type === </span><span style="--0:#FDDA68;--1:#A84E00">"text"</span><span style="--0:#89DDFF;--1:#007474">)</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#EE9080;--1:#8F1500">return</span><span style="--0:#EEFFFF;--1:#62676A"> <</span><span style="--0:#57C78F;--1:#00783C">span</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#57C78F;--1:#00783C">key</span><span style="--0:#EEFFFF;--1:#62676A">=</span><span style="--0:#89DDFF;--1:#007474">{</span><span style="--0:#EEFFFF;--1:#00268F">i</span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EEFFFF;--1:#62676A">></span><span style="--0:#89DDFF;--1:#007474">{</span><span style="--0:#EEFFFF;--1:#62676A">part.</span><span style="--0:#D5D7D8;--1:#8F1500">text</span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--1:#8F1500"><span style="--0:#EE9080"></</span><span style="--0:#D5D7D8">span</span><span style="--0:#EE9080">></span></span><span style="--0:#89DDFF;--1:#007474">;</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">}</span></div></div><div class="ec-line"><div class="code"> </div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#A9A9A5;--0fs:italic;--1:#62676A;--1fs:italic">// Render approval UI for tools that need confirmation</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#57C78F;--1:#00783C">if</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">(</span><span style="--0:#EEFFFF;--1:#62676A">part.state === </span><span style="--0:#FDDA68;--1:#A84E00">"approval-requested"</span><span style="--0:#89DDFF;--1:#007474">)</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#EE9080;--1:#8F1500">const</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">approval</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">=</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#57C78F;--1:#00783C">getToolApproval</span><span style="--0:#EE9080;--1:#32008F">(</span><span style="--0:#D5D7D8;--1:#8F1500">part</span><span style="--0:#EE9080;--1:#32008F">)</span><span style="--0:#89DDFF;--1:#007474">;</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#EE9080;--1:#8F1500">if</span><span style="--0:#EEFFFF;--1:#62676A"> (</span><span style="--1:#8F1500"><span style="--0:#EE9080">!</span><span style="--0:#D5D7D8">approval</span></span><span style="--0:#EEFFFF;--1:#62676A">) </span><span style="--0:#EE9080;--1:#8F1500">return</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#EE9080;--1:#32008F">null</span><span style="--0:#89DDFF;--1:#007474">;</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#EE9080;--1:#8F1500">return</span><span style="--0:#EEFFFF;--1:#62676A"> (</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--1:#8F1500"><span style="--0:#EE9080"><</span><span style="--0:#D5D7D8">div</span></span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--1:#8F1500"><span style="--0:#D5D7D8">key</span><span style="--0:#EE9080">=</span></span><span style="--0:#89DDFF;--1:#007474">{</span><span style="--0:#EEFFFF;--1:#62676A">part.</span><span style="--0:#D5D7D8;--1:#8F1500">toolCallId</span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EE9080;--1:#8F1500">></span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EEFFFF;--1:#62676A"> </span></span><span style="--0:#EEFFFF;--1:#62676A"><</span><span style="--0:#57C78F;--1:#00783C">p</span><span style="--0:#EEFFFF;--1:#62676A">></span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#D5D7D8;--1:#8F1500">Approve</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--1:#8F1500"><span style="--0:#EE9080"><</span><span style="--0:#D5D7D8">strong</span><span style="--0:#EE9080">></span></span><span style="--0:#89DDFF;--1:#007474">{</span><span style="--0:#EEFFFF;--1:#62676A">part.</span><span style="--0:#D5D7D8;--1:#8F1500">toolName</span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--1:#8F1500"><span style="--0:#EE9080"></</span><span style="--0:#D5D7D8">strong</span><span style="--0:#EE9080">>?</span></span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--1:#8F1500"><span style="--0:#EE9080"></</span><span style="--0:#D5D7D8">p</span><span style="--0:#EE9080">></span></span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EEFFFF;--1:#62676A"> </span></span><span style="--0:#EEFFFF;--1:#62676A"><</span><span style="--0:#57C78F;--1:#00783C">pre</span><span style="--0:#EEFFFF;--1:#62676A">></span><span style="--0:#89DDFF;--1:#007474">{</span><span style="--0:#EEFFFF;--1:#62676A">JSON.stringify(part.</span><span style="--0:#D5D7D8;--1:#8F1500">input</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#D5D7D8;--1:#8F1500">null</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#B59EE1;--1:#7C008F">2</span><span style="--0:#EEFFFF;--1:#62676A">)</span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--1:#8F1500"><span style="--0:#EE9080"></</span><span style="--0:#D5D7D8">pre</span><span style="--0:#EE9080">></span></span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--1:#8F1500"><span style="--0:#EE9080"><</span><span style="--0:#D5D7D8">button</span></span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--1:#8F1500"><span style="--0:#D5D7D8">onClick</span><span style="--0:#EE9080">=</span></span><span style="--0:#89DDFF;--1:#007474">{</span><span style="--0:#EEFFFF;--1:#62676A">() =></span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#57C78F;--1:#00783C">addToolApprovalResponse</span><span style="--0:#89DDFF;--1:#007474">({</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EEFFFF"> </span></span><span style="--0:#EEFFFF;--1:#00268F">id</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#B59EE1;--1:#7C008F">approval</span><span style="--0:#EEFFFF;--1:#62676A">.</span><span style="--0:#B59EE1;--1:#7C008F">id</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EEFFFF"> </span></span><span style="--0:#EEFFFF;--1:#00268F">approved</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#B59EE1;--1:#7C008F">true</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">})</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">}</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#EE9080;--1:#8F1500">></span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#D5D7D8;--1:#8F1500">Approve</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--1:#8F1500"><span style="--0:#EE9080"></</span><span style="--0:#D5D7D8">button</span><span style="--0:#EE9080">></span></span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--1:#8F1500"><span style="--0:#EE9080"><</span><span style="--0:#D5D7D8">button</span></span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--1:#8F1500"><span style="--0:#D5D7D8">onClick</span><span style="--0:#EE9080">=</span></span><span style="--0:#89DDFF;--1:#007474">{</span><span style="--0:#EEFFFF;--1:#62676A">() =></span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#57C78F;--1:#00783C">addToolApprovalResponse</span><span style="--0:#89DDFF;--1:#007474">({</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EEFFFF"> </span></span><span style="--0:#EEFFFF;--1:#00268F">id</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#B59EE1;--1:#7C008F">approval</span><span style="--0:#EEFFFF;--1:#62676A">.</span><span style="--0:#B59EE1;--1:#7C008F">id</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EEFFFF"> </span></span><span style="--0:#EEFFFF;--1:#00268F">approved</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#B59EE1;--1:#7C008F">false</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">})</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">}</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#EE9080;--1:#8F1500">></span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#D5D7D8;--1:#8F1500">Reject</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--1:#8F1500"><span style="--0:#EE9080"></</span><span style="--0:#D5D7D8">button</span><span style="--0:#EE9080">></span></span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--1:#8F1500"><span style="--0:#EE9080"></</span><span style="--0:#D5D7D8">div</span><span style="--0:#EE9080">></span></span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EEFFFF;--1:#62676A"> </span></span><span style="--0:#EEFFFF;--1:#62676A">);</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EEFFFF;--1:#62676A"> </span></span><span style="--0:#EEFFFF;--1:#62676A">}</span></div></div><div class="ec-line"><div class="code"> </div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#A9A9A5;--0fs:italic;--1:#62676A;--1fs:italic">// Show completed tool results</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#57C78F;--1:#00783C">if</span><span style="--0:#EEFFFF;--1:#62676A"> (</span><span style="--0:#EEFFFF;--1:#00268F">part</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#EEFFFF;--1:#00268F">state</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#EE9080;--1:#8F1500">===</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">"output-available"</span><span style="--0:#EEFFFF;--1:#62676A">) </span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#57C78F;--1:#00783C">return</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">(</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EEFFFF;--1:#62676A"> </span></span><span style="--0:#EEFFFF;--1:#62676A"><</span><span style="--0:#B59EE1;--1:#7C008F">details</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#B59EE1;--1:#7C008F">key</span><span style="--0:#EE9080;--1:#8F1500">=</span><span style="--0:#89DDFF;--1:#007474">{</span><span style="--0:#EEFFFF;--1:#62676A">part.</span><span style="--0:#D5D7D8;--1:#8F1500">toolCallId</span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EE9080;--1:#8F1500">></span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EEFFFF;--1:#62676A"> </span></span><span style="--0:#EEFFFF;--1:#62676A"><</span><span style="--0:#B59EE1;--1:#7C008F">summary</span><span style="--0:#EEFFFF;--1:#62676A">></span><span style="--0:#89DDFF;--1:#007474">{</span><span style="--0:#B59EE1;--1:#7C008F">part</span><span style="--0:#EEFFFF;--1:#62676A">.</span><span style="--0:#B59EE1;--1:#7C008F">toolName</span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#B59EE1;--1:#7C008F">result</span><span style="--0:#EEFFFF;--1:#62676A"></</span><span style="--0:#B59EE1;--1:#7C008F">summary</span><span style="--0:#EEFFFF;--1:#62676A">></span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EEFFFF;--1:#62676A"> </span></span><span style="--0:#EEFFFF;--1:#62676A"><</span><span style="--0:#B59EE1;--1:#7C008F">pre</span><span style="--0:#EEFFFF;--1:#62676A">></span><span style="--0:#89DDFF;--1:#007474">{</span><span style="--0:#B59EE1;--1:#7C008F">JSON</span><span style="--0:#EEFFFF;--1:#62676A">.</span><span style="--0:#B59EE1;--1:#7C008F">stringify</span><span style="--0:#EEFFFF;--1:#62676A">(</span><span style="--0:#B59EE1;--1:#7C008F">part</span><span style="--0:#EEFFFF;--1:#62676A">.</span><span style="--0:#B59EE1;--1:#7C008F">output</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#B59EE1;--1:#7C008F">null</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EEFFFF;--1:#62676A"> 2)</span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EEFFFF;--1:#62676A"></</span><span style="--0:#B59EE1;--1:#7C008F">pre</span><span style="--0:#EEFFFF;--1:#62676A">></span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EEFFFF;--1:#62676A"> </span></span><span style="--0:#EEFFFF;--1:#62676A"></</span><span style="--0:#B59EE1;--1:#7C008F">details</span><span style="--0:#EEFFFF;--1:#62676A">></span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">)</span><span style="--0:#EEFFFF;--1:#62676A">;</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">}</span></div></div><div class="ec-line"><div class="code"> </div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#D5D7D8;--1:#8F1500">return</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#EE9080;--1:#32008F">null</span><span style="--0:#EEFFFF;--1:#62676A">;</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EEFFFF;--1:#62676A"> </span></span><span style="--0:#EEFFFF;--1:#62676A">})}</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--1:#8F1500"><span style="--0:#EE9080"></</span><span style="--0:#D5D7D8">div</span><span style="--0:#EE9080">></span></span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EEFFFF;--1:#62676A"> </span></span><span style="--0:#EEFFFF;--1:#62676A">))}</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--1:#8F1500"><span style="--0:#EE9080"></</span><span style="--0:#D5D7D8">div</span><span style="--0:#EE9080">></span></span></div></div><div class="ec-line"><div class="code"> </div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--1:#8F1500"><span style="--0:#EE9080"><</span><span style="--0:#D5D7D8">form</span></span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--1:#8F1500"><span style="--0:#D5D7D8">onSubmit</span><span style="--0:#EE9080">=</span></span><span style="--0:#89DDFF;--1:#007474">{</span><span style="--0:#EEFFFF;--1:#62676A">(e) => </span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EEFFFF"> </span></span><span style="--0:#EEFFFF;--1:#00268F">e</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">preventDefault</span><span style="--0:#EEFFFF;--1:#62676A">()</span><span style="--0:#89DDFF;--1:#007474">;</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#EE9080;--1:#8F1500">const</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">input</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">=</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">e</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#EEFFFF;--1:#00268F">currentTarget</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#EEFFFF;--1:#00268F">elements</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">namedItem</span><span style="--0:#EE9080;--1:#32008F">(</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#FDDA68;--1:#A84E00">"message"</span><span style="--0:#89DDFF;--1:#007474">,</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EE9080;--1:#32008F"> </span></span><span style="--0:#EE9080;--1:#32008F">) </span><span style="--0:#EE9080;--1:#8F1500">as</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#57C78F;--1:#00783C">HTMLInputElement</span><span style="--0:#89DDFF;--1:#007474">;</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#57C78F;--1:#00783C">sendMessage</span><span style="--0:#EEFFFF;--1:#62676A">(</span><span style="--0:#89DDFF;--1:#007474">{</span><span style="--0:#EEFFFF;--1:#62676A"> text</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#EEFFFF;--1:#00268F">input</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#EEFFFF;--1:#00268F">value</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EEFFFF;--1:#62676A">)</span><span style="--0:#89DDFF;--1:#007474">;</span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EEFFFF"> </span></span><span style="--0:#EEFFFF;--1:#00268F">input</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#EEFFFF;--1:#00268F">value</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#EE9080;--1:#8F1500">=</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">""</span><span style="--0:#89DDFF;--1:#007474">;</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">}}</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#EE9080;--1:#8F1500">></span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--1:#8F1500"><span style="--0:#EE9080"><</span><span style="--0:#D5D7D8">input</span></span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--1:#8F1500"><span style="--0:#D5D7D8">name</span><span style="--0:#EE9080">=</span></span><span style="--0:#FDDA68;--1:#A84E00">"message"</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--1:#8F1500"><span style="--0:#D5D7D8">placeholder</span><span style="--0:#EE9080">=</span></span><span style="--0:#FDDA68;--1:#A84E00">"Try: What's the weather in Paris?"</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#EE9080;--1:#8F1500">/></span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--1:#8F1500"><span style="--0:#EE9080"><</span><span style="--0:#D5D7D8">button</span></span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--1:#8F1500"><span style="--0:#D5D7D8">type</span><span style="--0:#EE9080">=</span></span><span style="--0:#FDDA68;--1:#A84E00">"submit"</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--1:#8F1500"><span style="--0:#D5D7D8">disabled</span><span style="--0:#EE9080">=</span></span><span style="--0:#89DDFF;--1:#007474">{</span><span style="--0:#D5D7D8;--1:#8F1500">status</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#EE9080;--1:#8F1500">===</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">"streaming"</span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EE9080;--1:#8F1500">></span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#D5D7D8;--1:#8F1500">Send</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--1:#8F1500"><span style="--0:#EE9080"></</span><span style="--0:#D5D7D8">button</span><span style="--0:#EE9080">></span></span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--1:#8F1500"><span style="--0:#EE9080"></</span><span style="--0:#D5D7D8">form</span><span style="--0:#EE9080">></span></span></div></div><div class="ec-line"><div class="code"> </div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--1:#8F1500"><span style="--0:#EE9080"><</span><span style="--0:#D5D7D8">button</span></span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--1:#8F1500"><span style="--0:#D5D7D8">onClick</span><span style="--0:#EE9080">=</span></span><span style="--0:#89DDFF;--1:#007474">{</span><span style="--0:#D5D7D8;--1:#8F1500">clearHistory</span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--1:#8F1500"><span style="--0:#EE9080">></span><span style="--0:#D5D7D8">Clear</span></span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--1:#8F1500"><span style="--0:#D5D7D8">history</span><span style="--0:#EE9080"></</span><span style="--0:#D5D7D8">button</span><span style="--0:#EE9080">></span></span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--1:#8F1500"><span style="--0:#EE9080"></</span><span style="--0:#D5D7D8">div</span><span style="--0:#EE9080">></span></span></div></div><div class="ec-line"><div class="code"><span class="indent"><span style="--0:#EEFFFF;--1:#62676A"> </span></span><span style="--0:#EEFFFF;--1:#62676A">);</span></div></div><div class="ec-line"><div class="code"><span style="--0:#EEFFFF;--1:#62676A">}</span></div></div><div class="ec-line"><div class="code"> </div></div><div class="ec-line"><div class="code"><span style="--0:#D5D7D8;--1:#8F1500">export</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#D5D7D8;--1:#8F1500">default</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#EE9080;--1:#8F1500">function</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#57C78F;--1:#00783C">App</span><span style="--0:#89DDFF;--1:#007474">()</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">{</span></div></div><div class="ec-line"><div class="code"><span class="indent"> </span><span style="--0:#EE9080;--1:#8F1500">return</span><span style="--0:#EEFFFF;--1:#62676A"> <</span><span style="--0:#57C78F;--1:#00783C">Chat</span><span style="--0:#EEFFFF;--1:#62676A"> /></span><span style="--0:#89DDFF;--1:#007474">;</span></div></div><div class="ec-line"><div class="code"><span style="--0:#89DDFF;--1:#007474">}</span></div></div></code></pre><div class="copy"><div aria-live="polite"></div><button data-copied="Copied!" data-code="import { useAgent } from "agents/react";import { useAgentChat, getToolApproval } from "@cloudflare/ai-chat/react";function Chat() { const agent = useAgent({ agent: "ChatAgent" }); const { messages, sendMessage, clearHistory, addToolApprovalResponse, status } = useAgentChat({ agent, // Handle client-side tools (tools with no server execute function) onToolCall: async ({ toolCall, addToolOutput }) => { if (toolCall.toolName === "getUserTimezone") { addToolOutput({ toolCallId: toolCall.toolCallId, output: { timezone: Intl.DateTimeFormat().resolvedOptions().timeZone, localTime: new Date().toLocaleTimeString(), }, }); } }, }); return ( <div> <div> {messages.map((msg) => ( <div key={msg.id}> <strong>{msg.role}:</strong> {msg.parts.map((part, i) => { if (part.type === "text") { return <span key={i}>{part.text}</span>; } // Render approval UI for tools that need confirmation if (part.state === "approval-requested") { const approval = getToolApproval(part); if (!approval) return null; return ( <div key={part.toolCallId}> <p> Approve <strong>{part.toolName}</strong>? </p> <pre>{JSON.stringify(part.input, null, 2)}</pre> <button onClick={() => addToolApprovalResponse({ id: approval.id, approved: true, }) } > Approve </button> <button onClick={() => addToolApprovalResponse({ id: approval.id, approved: false, }) } > Reject </button> </div> ); } // Show completed tool results if (part.state === "output-available") { return ( <details key={part.toolCallId}> <summary>{part.toolName} result</summary> <pre>{JSON.stringify(part.output, null, 2)}</pre> </details> ); } return null; })} </div> ))} </div> <form onSubmit={(e) => { e.preventDefault(); const input = e.currentTarget.elements.namedItem( "message", ) as HTMLInputElement; sendMessage({ text: input.value }); input.value = ""; }} > <input name="message" placeholder="Try: What's the weather in Paris?" /> <button type="submit" disabled={status === "streaming"}> Send </button> </form> <button onClick={clearHistory}>Clear history</button> </div> );}export default function App() { return <Chat />;}"><div></div></button></div><div class="explain"><button class="explain-button" type="button" data-explain-code="" aria-label="Explain Code"><svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M9.937 15.5A2 2 0 0 0 8.5 14.063l-6.135-1.582a.5.5 0 0 1 0-.962L8.5 9.936A2 2 0 0 0 9.937 8.5l1.582-6.135a.5.5 0 0 1 .963 0L14.063 8.5A2 2 0 0 0 15.5 9.937l6.135 1.581a.5.5 0 0 1 0 .964L15.5 14.063a2 2 0 0 0-1.437 1.437l-1.582 6.135a.5.5 0 0 1-.963 0z"></path><path d="M20 3v4"></path><path d="M22 5h-4"></path><path d="M4 17v2"></path><path d="M5 18H3"></path></svg></button></div></figure></div> </div> <starlight-tabs-restore class="astro-6ilsj7c3"></starlight-tabs-restore> </starlight-tabs> <div tabindex="-1" class="heading-wrapper level-h3"><h3 id="key-client-concepts">Key client concepts</h3><a class="anchor-link" href="#key-client-concepts"><span aria-hidden="true" class="anchor-icon"><svg width="16" height="16" viewBox="0 0 24 24"><path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z"></path></svg></span></a></div> <ul> <li><strong><code dir="auto">useAgent</code></strong> connects to your <code dir="auto">ChatAgent</code> over WebSocket</li> <li><strong><code dir="auto">useAgentChat</code></strong> manages the chat lifecycle (messages, streaming, tools)</li> <li><strong><code dir="auto">onToolCall</code></strong> handles client-side tools — when the LLM calls <code dir="auto">getUserTimezone</code>, the browser provides the result and the conversation auto-continues</li> <li><strong><code dir="auto">addToolApprovalResponse</code></strong> approves or rejects tools that have <code dir="auto">needsApproval</code></li> <li>Messages, streaming, and resumption are all handled automatically</li> </ul> <div tabindex="-1" class="heading-wrapper level-h2"><h2 id="5-run-locally">5. Run locally</h2><a class="anchor-link" href="#5-run-locally"><span aria-hidden="true" class="anchor-icon"><svg width="16" height="16" viewBox="0 0 24 24"><path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z"></path></svg></span></a></div> <p>Generate types and start the dev server:</p> <div class="expressive-code"><figure class="frame is-terminal not-content"><figcaption class="header"><span class="title"></span><span class="sr-only">Terminal window</span></figcaption><pre data-language="sh"><code><div class="ec-line"><div class="code"><span style="--0:#57C78F;--1:#00783C">npx</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">wrangler</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">types</span></div></div><div class="ec-line"><div class="code"><span style="--0:#57C78F;--1:#00783C">npm</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">run</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">dev</span></div></div></code></pre><div class="copy"><div aria-live="polite"></div><button data-copied="Copied!" data-code="npx wrangler typesnpm run dev"><div></div></button></div></figure></div> <p>Try these prompts:</p> <ul> <li><strong>"What is the weather in Tokyo?"</strong> — calls the server-side <code dir="auto">getWeather</code> tool</li> <li><strong>"What timezone am I in?"</strong> — calls the client-side <code dir="auto">getUserTimezone</code> tool (the browser provides the answer)</li> <li><strong>"What is 5000 times 3?"</strong> — triggers the approval UI before executing (numbers over 1000)</li> </ul> <div tabindex="-1" class="heading-wrapper level-h2"><h2 id="6-deploy">6. Deploy</h2><a class="anchor-link" href="#6-deploy"><span aria-hidden="true" class="anchor-icon"><svg width="16" height="16" viewBox="0 0 24 24"><path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z"></path></svg></span></a></div> <div class="expressive-code"><figure class="frame is-terminal not-content"><figcaption class="header"><span class="title"></span><span class="sr-only">Terminal window</span></figcaption><pre data-language="sh"><code><div class="ec-line"><div class="code"><span style="--0:#57C78F;--1:#00783C">npx</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">wrangler</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">deploy</span></div></div></code></pre><div class="copy"><div aria-live="polite"></div><button data-copied="Copied!" data-code="npx wrangler deploy"><div></div></button></div></figure></div> <p>Your agent is now live on Cloudflare's global network. Messages persist in SQLite, streams resume on disconnect, and the agent hibernates when idle to save resources.</p> <div tabindex="-1" class="heading-wrapper level-h2"><h2 id="what-you-built">What you built</h2><a class="anchor-link" href="#what-you-built"><span aria-hidden="true" class="anchor-icon"><svg width="16" height="16" viewBox="0 0 24 24"><path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z"></path></svg></span></a></div> <p>Your chat agent has:</p> <ul> <li><strong>Streaming AI responses</strong> via Workers AI (no API keys)</li> <li><strong>Message persistence</strong> in SQLite — conversations survive restarts</li> <li><strong>Server-side tools</strong> that execute automatically</li> <li><strong>Client-side tools</strong> that run in the browser and feed results back to the LLM</li> <li><strong>Human-in-the-loop approval</strong> for sensitive operations</li> <li><strong>Resumable streaming</strong> — if a client disconnects mid-stream, it picks up where it left off</li> </ul> <div tabindex="-1" class="heading-wrapper level-h2"><h2 id="next-steps">Next steps</h2><a class="anchor-link" href="#next-steps"><span aria-hidden="true" class="anchor-icon"><svg width="16" height="16" viewBox="0 0 24 24"><path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z"></path></svg></span></a></div> <div class="sl-link-card astro-lyux3snc"> <span class="sl-flex stack astro-lyux3snc"> <a href="/agents/communication-channels/chat/chat-agents/" class="astro-lyux3snc"> <span class="title astro-lyux3snc">Chat agents API reference</span> </a> <span class="description astro-lyux3snc">Full reference for AIChatAgent and useAgentChat — providers, storage, advanced patterns.</span> </span> <svg aria-hidden="true" class="icon rtl:flip astro-lyux3snc astro-r7kprdcr" width="16" height="16" viewBox="0 0 24 24" fill="currentColor" style="--sl-icon-size: 1.333em;"><path d="M17.92 11.62a1.001 1.001 0 0 0-.21-.33l-5-5a1.003 1.003 0 1 0-1.42 1.42l3.3 3.29H7a1 1 0 0 0 0 2h7.59l-3.3 3.29a1.002 1.002 0 0 0 .325 1.639 1 1 0 0 0 1.095-.219l5-5a1 1 0 0 0 .21-.33 1 1 0 0 0 0-.76Z"/></svg> </div> <div class="sl-link-card astro-lyux3snc"> <span class="sl-flex stack astro-lyux3snc"> <a href="/agents/runtime/lifecycle/state/" class="astro-lyux3snc"> <span class="title astro-lyux3snc">Store and sync state</span> </a> <span class="description astro-lyux3snc">Add real-time state beyond chat messages.</span> </span> <svg aria-hidden="true" class="icon rtl:flip astro-lyux3snc astro-r7kprdcr" width="16" height="16" viewBox="0 0 24 24" fill="currentColor" style="--sl-icon-size: 1.333em;"><path d="M17.92 11.62a1.001 1.001 0 0 0-.21-.33l-5-5a1.003 1.003 0 1 0-1.42 1.42l3.3 3.29H7a1 1 0 0 0 0 2h7.59l-3.3 3.29a1.002 1.002 0 0 0 .325 1.639 1 1 0 0 0 1.095-.219l5-5a1 1 0 0 0 .21-.33 1 1 0 0 0 0-.76Z"/></svg> </div> <div class="sl-link-card astro-lyux3snc"> <span class="sl-flex stack astro-lyux3snc"> <a href="/agents/runtime/lifecycle/callable-methods/" class="astro-lyux3snc"> <span class="title astro-lyux3snc">Callable methods</span> </a> <span class="description astro-lyux3snc">Expose agent methods as typed RPC for 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Lưu ý trước khi làm Notes before you start
- Đây là bản tóm tắt trên Orange Cloud Learning Hub — không thay thế tài liệu chính thức. This is a summary on Orange Cloud Learning Hub — it does not replace the official documentation.
- Luôn mở liên kết «Tài liệu gốc» bên dưới khi cần lệnh CLI, snippet code và ảnh minh họa đầy đủ. Open the Official docs link below for CLI commands, code snippets, and full screenshots.
- Docs Cloudflare cập nhật thường xuyên — đối chiếu ngày «Rà soát lần cuối» trên trang gốc khi triển khai production. Cloudflare docs change frequently — verify the Last reviewed date on the official page before production use.
Nội dung chi tiết chưa được đồng bộ — mở tài liệu gốc hoặc chạy lại resources:crawl-previews. Detailed content not synced yet — open the official doc or re-run resources:crawl-previews.
Xem bản đầy đủ trên developers.cloudflare.com (ảnh, tab cấu hình). View the full guide on developers.cloudflare.com (images, config tabs).
Tài liệu gốc ↗ Official docs ↗