X Openai Agents Sdk 9c57d9f

---
name: x-openai-agents-sdk-9c57d9f
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. Biases towards retrieval from Cloudflare docs over pre-trained knowledge.
---

### 导出副本边界与技能别名

迁移、安装、修复和经验回写只作用于当前加载的目标宿主技能副本。原 Codex 技能/MCP、下载的源码和 `original-skills` 均为来源材料，不因执行本副本而写入；只有用户另行明确要求配置 Codex 产品本身时，才按该产品流程处理指定目标。脚本需要安装目录或状态目录时，显式提供目标路径；不得从 `CODEX_HOME` 隐式推断写入位置。

跨技能名称可能沿用源库别名。先查 [技能别名表](../../skill-aliases.json)，优先选择同来源、同插件的条目，再使用其 `id` 调用或读取对应入口；不得假定旧 `$skill`、`superpowers:skill` 名称在新宿主直接注册。不能确定目标时先核对，不替换真实产品命令或 Shell 环境变量。

## 跨宿主使用约定

本副本供支持 Agent Skills 的客户端使用。先检查当前宿主实际提供的工具、权限和已连接服务，再执行正文工作流。原文中的宿主工具标识是能力参考；只有实际发现该工具时才可调用，其他宿主应使用经核验的等价 MCP、CLI 或 API。没有等价能力的步骤必须报告不可用，不能虚构调用或完成状态。

技能资源以本技能目录为基准；输出写入当前项目中用户指定的位置。通过技能名称或自然语言触发，具体快捷命令由宿主决定。涉及真实产品、模型 API、协议字段和官方网址的名称保持原意。授权、审批、隐私和工具范围限制在迁移后仍然有效；不得为兼容而扩大权限。具体依赖与迁移说明见同目录 `PORTABILITY.md`。

# Cloudflare Agents SDK

Your knowledge of the Agents SDK may be outdated. **Prefer retrieval over pre-training** for any Agents SDK task.

## Retrieval Sources

Fetch current docs from `https://github.com/cloudflare/agents/tree/main/docs` before implementing.

| Topic | Doc | Use for |
|-------|-----|---------|
| Getting started | `docs/getting-started.md` | First agent, project setup |
| State | `docs/state.md` | `setState`, `validateStateChange`, persistence |
| Routing | `docs/routing.md` | URL patterns, `routeAgentRequest`, `basePath` |
| Callable methods | `docs/callable-methods.md` | `@callable`, RPC, streaming, timeouts |
| Scheduling | `docs/scheduling.md` | `schedule()`, `scheduleEvery()`, cron |
| Workflows | `docs/workflows.md` | `AgentWorkflow`, durable multi-step tasks |
| HTTP/WebSockets | `docs/http-websockets.md` | Lifecycle hooks, hibernation |
| Email | `docs/email.md` | Email routing, secure reply resolver |
| MCP client | `docs/mcp-client.md` | Connecting to MCP servers |
| MCP server | `docs/mcp-servers.md` | Building MCP servers with `McpAgent` |
| Client SDK | `docs/client-sdk.md` | `useAgent`, `useAgentChat`, React hooks |
| Human-in-the-loop | `docs/human-in-the-loop.md` | Approval flows, pausing workflows |
| Resumable streaming | `docs/resumable-streaming.md` | Stream recovery on disconnect |

Cloudflare docs: https://developers.cloudflare.com/agents/

## Capabilities

The Agents SDK provides:

- **Persistent state** - SQLite-backed, auto-synced to clients
- **Callable RPC** - `@callable()` methods invoked over WebSocket
- **Scheduling** - One-time, recurring (`scheduleEvery`), and cron tasks
- **Workflows** - Durable multi-step background processing via `AgentWorkflow`
- **MCP integration** - Connect to MCP servers or build your own with `McpAgent`
- **Email handling** - Receive and reply to emails with secure routing
- **Streaming chat** - `AIChatAgent` with resumable streams
- **React hooks** - `useAgent`, `useAgentChat` for client apps

## FIRST: Verify Installation

```bash
npm ls agents  # Should show agents package
```

If not installed:
```bash
npm install agents
```

## Wrangler Configuration

```jsonc
{
  "durable_objects": {
    "bindings": [{ "name": "MyAgent", "class_name": "MyAgent" }]
  },
  "migrations": [{ "tag": "v1", "new_sqlite_classes": ["MyAgent"] }]
}
```

## Agent Class

```typescript
import { Agent, routeAgentRequest, callable } from "agents";

type State = { count: number };

export class Counter extends Agent<Env, State> {
  initialState = { count: 0 };

  // Validation hook - runs before state persists (sync, throwing rejects the update)
  validateStateChange(nextState: State, source: Connection | "server") {
    if (nextState.count < 0) throw new Error("Count cannot be negative");
  }

  // Notification hook - runs after state persists (async, non-blocking)
  onStateUpdate(state: State, source: Connection | "server") {
    console.log("State updated:", state);
  }

  @callable()
  increment() {
    this.setState({ count: this.state.count + 1 });
    return this.state.count;
  }
}

export default {
  fetch: (req, env) => routeAgentRequest(req, env) ?? new Response("Not found", { status: 404 })
};
```

## Routing

Requests route to `/agents/{agent-name}/{instance-name}`:

| Class | URL |
|-------|-----|
| `Counter` | `/agents/counter/user-123` |
| `ChatRoom` | `/agents/chat-room/lobby` |

Client: `useAgent({ agent: "Counter", name: "user-123" })`

## Core APIs

| Task | API |
|------|-----|
| Read state | `this.state.count` |
| Write state | `this.setState({ count: 1 })` |
| SQL query | `` this.sql`SELECT * FROM users WHERE id = ${id}` `` |
| Schedule (delay) | `await this.schedule(60, "task", payload)` |
| Schedule (cron) | `await this.schedule("0 * * * *", "task", payload)` |
| Schedule (interval) | `await this.scheduleEvery(30, "poll")` |
| RPC method | `@callable() myMethod() { ... }` |
| Streaming RPC | `@callable({ streaming: true }) stream(res) { ... }` |
| Start workflow | `await this.runWorkflow("ProcessingWorkflow", params)` |

## React Client

```tsx
import { useAgent } from "agents/react";

function App() {
  const [state, setLocalState] = useState({ count: 0 });

  const agent = useAgent({
    agent: "Counter",
    name: "my-instance",
    onStateUpdate: (newState) => setLocalState(newState),
    onIdentity: (name, agentType) => console.log(`Connected to ${name}`)
  });

  return (
    <button onClick={() => agent.setState({ count: state.count + 1 })}>
      Count: {state.count}
    </button>
  );
}
```

## References

- **[references/workflows.md](references/workflows.md)** - Durable Workflows integration
- **[references/callable.md](references/callable.md)** - RPC methods, streaming, timeouts
- **[references/state-scheduling.md](references/state-scheduling.md)** - State persistence, scheduling
- **[references/streaming-chat.md](references/streaming-chat.md)** - AIChatAgent, resumable streams
- **[references/mcp.md](references/mcp.md)** - MCP server integration
- **[references/email.md](references/email.md)** - Email routing and handling
- **[references/codemode.md](references/codemode.md)** - Code Mode (experimental)