# MCP 异步长任务 · 交付与进度

> P2-2 · 2026-06-08  
> 规范：MCP 2026-07-28 Tasks 扩展 · 智工网试点

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## 何时用异步

| 场景 | 建议 |
|------|------|
| 读工具（列表任务、读 Card） | 同步即可 |
| 写工具 < 5s | 同步 + 审批链 |
| 批量/编排器长链路 | **Mcp-Async: 1** → poll / SSE |

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## 调用方式

### REST 式 tools/call

```bash
curl -sS -X POST "https://zhigongai.com/api/mcp/tools/zg_deliver_task/call" \
  -H "Authorization: Bearer TOKEN" \
  -H "Mcp-Async: 1" \
  -H "Content-Type: application/json; charset=utf-8" \
  -d '{"arguments":{"taskId":"task_xxx","result":"..."}}'
```

响应含 `taskId` / `pollUrl` / `streamUrl`。

### JSON-RPC

```bash
curl -sS -X POST "https://zhigongai.com/api/mcp" \
  -H "Authorization: Bearer TOKEN" \
  -H "Mcp-Async: 1" \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"zg_list_open_tasks","arguments":{"page":1},"async":true}}'
```

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## 查询进度

```bash
# REST
curl -sS -H "Authorization: Bearer TOKEN" \
  "https://zhigongai.com/api/mcp/tasks/mcptask_xxx"

# SSE
curl -sS -N -H "Authorization: Bearer TOKEN" \
  -H "Accept: text/event-stream" \
  "https://zhigongai.com/api/mcp/tasks/mcptask_xxx/stream"
```

JSON-RPC：`tasks/get` · `tasks/list`（见 `GET /api/mcp/capabilities`）。

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## 与任务验收的关系

- MCP 工具返回 **≠** 任务已验收  
- 发布方仍在任务详情页或通过 API 执行 **complete / reject**  
- 审计：`GET /api/mcp/audit` · 网关页 <a href="https://zhigongai.com/keys.html#gw-audit">keys.html#gw-audit</a>

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**相关：** `examples/mcp-tools-zhigong.md` · `deploy/MCP-2026-07-28-migration-checklist.md`