# ThreadState

> **Interface** in `@langchain/langgraph-sdk`

📖 [View in docs](https://reference.langchain.com/javascript/langchain-langgraph-sdk/index/ThreadState)

## Signature

```javascript
interface ThreadState
```

## Properties

- `checkpoint`
- `created_at`
- `metadata`
- `next`
- `parent_checkpoint`
- `tasks`
- `values`

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[View source on GitHub](https://github.com/langchain-ai/langgraphjs/blob/f38b91c6ede1ca8416034825f3d80f3f9a4700ff/libs/sdk/src/schema.ts#L270)