# index

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

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

## Signature

```javascript
index
```

## Methods

- [`overrideFetchImplementation()`](https://reference.langchain.com/javascript/langchain-langgraph-sdk/index/overrideFetchImplementation)
- [`getApiKey()`](https://reference.langchain.com/javascript/langchain-langgraph-sdk/index/getApiKey)

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[View source on GitHub](https://github.com/langchain-ai/langgraphjs/blob/f38b91c6ede1ca8416034825f3d80f3f9a4700ff/libs/sdk/src/index.ts#L1)