> ## Documentation Index
> Fetch the complete documentation index at: https://docs.wandb.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# startTurn

> TypeScript SDK reference

# startTurn

▸ **startTurn**(`opts?`): [`Turn`](../classes/turn)

Start a new Turn. If a Conversation is active, the turn inherits its
`conversationId`; otherwise the turn has no conversation id.

#### Parameters

| Name   | Type                                 |
| :----- | :----------------------------------- |
| `opts` | [`TurnInit`](../interfaces/turninit) |

#### Returns

[`Turn`](../classes/turn)

`Example`

```ts twoslash theme={null}
// @noErrors
weave.startTurn();
```

`Example`

```ts twoslash theme={null}
// @noErrors
weave.startTurn({
  agentId: 'research-bot-prod',
  agentName: 'research-bot',
  agentDescription: 'Looks up facts on Wikipedia.',
  agentVersion: '1.4.2',
  model: 'gpt-4o',
  userMessage: 'What is the weather in Tokyo?',
  systemInstructions: ['You are a helpful weather bot.'],
  startTime: new Date('2026-05-29T10:00:00.000Z'),
});
```

#### Defined in

[src/genai/api.ts:54](https://github.com/wandb/weave/blob/8c5f077eb11c42b84000726ff20504abc728d3fb/sdks/node/src/genai/api.ts#L54)

***