# ReActChain

> **Class** in `langchain_classic`

📖 [View in docs](https://reference.langchain.com/python/langchain-classic/agents/react/base/ReActChain)

[Deprecated] Chain that implements the ReAct paper.

## Signature

```python
ReActChain(
    self,
    llm: BaseLanguageModel,
    docstore: Docstore,
    **kwargs: Any = {},
)
```

## Extends

- `AgentExecutor`

## Constructors

```python
__init__(
    self,
    llm: BaseLanguageModel,
    docstore: Docstore,
    **kwargs: Any = {},
)
```

| Name | Type |
|------|------|
| `llm` | `BaseLanguageModel` |
| `docstore` | `Docstore` |


## ⚠️ Deprecated

Deprecated since version 0.1.0. Will be removed in version 1.0.

---

[View source on GitHub](https://github.com/langchain-ai/langchain/blob/f0c5a28fa05adcda89aebcb449d897245ab21fa4/libs/langchain/langchain_classic/agents/react/base.py#L165)