> ## Documentation Index
> Fetch the complete documentation index at: https://wb-21fd5541-docs-2751.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# startSubagent

> TypeScript SDK リファレンス

<div id="startsubagent">
  # startSubagent
</div>

▸ **startSubagent**(`opts`): [`SubAgent`](../classes/subagent)

SubAgent の span を開始します。親の解決ルールは `startTool` と同じです。

<div id="parameters">
  #### パラメーター
</div>

| 名      | タイプ                                          |
| :----- | :------------------------------------------- |
| `opts` | [`SubAgentInit`](../interfaces/subagentinit) |

<div id="returns">
  #### 戻り値
</div>

[`SubAgent`](../classes/subagent)

`例`

```ts twoslash theme={null}
// @noErrors
weave.startSubagent({name: 'critic'});
```

`例`

```ts twoslash theme={null}
// @noErrors
weave.startSubagent({
  name: 'critic',
  model: 'gpt-4o',
  systemInstructions: ['Critique the proposed plan.'],
  startTime: new Date('2026-05-29T10:00:00.000Z'),
});
```

<div id="defined-in">
  #### 定義元
</div>

[src/genai/api.ts:137](https://github.com/wandb/weave/blob/8c5f077eb11c42b84000726ff20504abc728d3fb/sdks/node/src/genai/api.ts#L137)

***