mirror of
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refactor: apply minimal tfcode branding
- Rename packages/opencode → packages/tfcode (directory only) - Rename bin/opencode → bin/tfcode (CLI binary) - Rename .opencode → .tfcode (config directory) - Update package.json name and bin field - Update config directory path references (.tfcode) - Keep internal code references as 'opencode' for easy upstream sync - Keep @opencode-ai/* workspace package names This minimal branding approach allows clean merges from upstream opencode repository while providing tfcode branding for users.
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packages/tfcode/test/fixture/skills/agents-sdk/SKILL.md
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packages/tfcode/test/fixture/skills/agents-sdk/SKILL.md
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---
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name: agents-sdk
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description: Build AI agents on Cloudflare Workers using the Agents SDK. Load when creating stateful agents, durable workflows, real-time WebSocket apps, scheduled tasks, MCP servers, or chat applications. Covers Agent class, state management, callable RPC, Workflows integration, and React hooks.
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---
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# Cloudflare Agents SDK
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**STOP.** Your knowledge of the Agents SDK may be outdated. Prefer retrieval over pre-training for any Agents SDK task.
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## Documentation
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Fetch current docs from `https://github.com/cloudflare/agents/tree/main/docs` before implementing.
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| Topic | Doc | Use for |
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| ------------------- | ----------------------------- | ---------------------------------------------- |
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| Getting started | `docs/getting-started.md` | First agent, project setup |
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| State | `docs/state.md` | `setState`, `validateStateChange`, persistence |
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| Routing | `docs/routing.md` | URL patterns, `routeAgentRequest`, `basePath` |
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| Callable methods | `docs/callable-methods.md` | `@callable`, RPC, streaming, timeouts |
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| Scheduling | `docs/scheduling.md` | `schedule()`, `scheduleEvery()`, cron |
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| Workflows | `docs/workflows.md` | `AgentWorkflow`, durable multi-step tasks |
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| HTTP/WebSockets | `docs/http-websockets.md` | Lifecycle hooks, hibernation |
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| Email | `docs/email.md` | Email routing, secure reply resolver |
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| MCP client | `docs/mcp-client.md` | Connecting to MCP servers |
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| MCP server | `docs/mcp-servers.md` | Building MCP servers with `McpAgent` |
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| Client SDK | `docs/client-sdk.md` | `useAgent`, `useAgentChat`, React hooks |
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| Human-in-the-loop | `docs/human-in-the-loop.md` | Approval flows, pausing workflows |
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| Resumable streaming | `docs/resumable-streaming.md` | Stream recovery on disconnect |
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Cloudflare docs: https://developers.cloudflare.com/agents/
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## Capabilities
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The Agents SDK provides:
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- **Persistent state** - SQLite-backed, auto-synced to clients
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- **Callable RPC** - `@callable()` methods invoked over WebSocket
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- **Scheduling** - One-time, recurring (`scheduleEvery`), and cron tasks
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- **Workflows** - Durable multi-step background processing via `AgentWorkflow`
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- **MCP integration** - Connect to MCP servers or build your own with `McpAgent`
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- **Email handling** - Receive and reply to emails with secure routing
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- **Streaming chat** - `AIChatAgent` with resumable streams
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- **React hooks** - `useAgent`, `useAgentChat` for client apps
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## FIRST: Verify Installation
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```bash
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npm ls agents # Should show agents package
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```
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If not installed:
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```bash
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npm install agents
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```
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## Wrangler Configuration
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```jsonc
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{
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"durable_objects": {
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"bindings": [{ "name": "MyAgent", "class_name": "MyAgent" }],
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},
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"migrations": [{ "tag": "v1", "new_sqlite_classes": ["MyAgent"] }],
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}
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```
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## Agent Class
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```typescript
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import { Agent, routeAgentRequest, callable } from "agents"
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type State = { count: number }
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export class Counter extends Agent<Env, State> {
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initialState = { count: 0 }
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// Validation hook - runs before state persists (sync, throwing rejects the update)
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validateStateChange(nextState: State, source: Connection | "server") {
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if (nextState.count < 0) throw new Error("Count cannot be negative")
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}
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// Notification hook - runs after state persists (async, non-blocking)
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onStateUpdate(state: State, source: Connection | "server") {
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console.log("State updated:", state)
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}
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@callable()
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increment() {
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this.setState({ count: this.state.count + 1 })
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return this.state.count
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}
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}
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export default {
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fetch: (req, env) => routeAgentRequest(req, env) ?? new Response("Not found", { status: 404 }),
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}
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```
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## Routing
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Requests route to `/agents/{agent-name}/{instance-name}`:
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| Class | URL |
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| ---------- | -------------------------- |
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| `Counter` | `/agents/counter/user-123` |
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| `ChatRoom` | `/agents/chat-room/lobby` |
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Client: `useAgent({ agent: "Counter", name: "user-123" })`
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## Core APIs
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| Task | API |
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| ------------------- | ------------------------------------------------------ |
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| Read state | `this.state.count` |
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| Write state | `this.setState({ count: 1 })` |
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| SQL query | `` this.sql`SELECT * FROM users WHERE id = ${id}` `` |
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| Schedule (delay) | `await this.schedule(60, "task", payload)` |
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| Schedule (cron) | `await this.schedule("0 * * * *", "task", payload)` |
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| Schedule (interval) | `await this.scheduleEvery(30, "poll")` |
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| RPC method | `@callable() myMethod() { ... }` |
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| Streaming RPC | `@callable({ streaming: true }) stream(res) { ... }` |
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| Start workflow | `await this.runWorkflow("ProcessingWorkflow", params)` |
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## React Client
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```tsx
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import { useAgent } from "agents/react"
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function App() {
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const [state, setLocalState] = useState({ count: 0 })
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const agent = useAgent({
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agent: "Counter",
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name: "my-instance",
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onStateUpdate: (newState) => setLocalState(newState),
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onIdentity: (name, agentType) => console.log(`Connected to ${name}`),
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})
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return <button onClick={() => agent.setState({ count: state.count + 1 })}>Count: {state.count}</button>
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}
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```
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## References
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- **[references/workflows.md](references/workflows.md)** - Durable Workflows integration
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- **[references/callable.md](references/callable.md)** - RPC methods, streaming, timeouts
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- **[references/state-scheduling.md](references/state-scheduling.md)** - State persistence, scheduling
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- **[references/streaming-chat.md](references/streaming-chat.md)** - AIChatAgent, resumable streams
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- **[references/mcp.md](references/mcp.md)** - MCP server integration
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- **[references/email.md](references/email.md)** - Email routing and handling
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- **[references/codemode.md](references/codemode.md)** - Code Mode (experimental)
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