# APIChain

> **Class** in `langchain_classic`

📖 [View in docs](https://reference.langchain.com/python/langchain-classic/chains/api/base/APIChain)

Raise an ImportError if APIChain is used without langchain_community.

## Signature

```python
APIChain(
    self,
    *_: Any = (),
    **__: Any = {},
)
```

## Constructors

```python
__init__(
    self,
    *_: Any = (),
    **__: Any = {},
) -> None
```


---

[View source on GitHub](https://github.com/langchain-ai/langchain/blob/79cab2dc7f58be720cac43db3677b4c1fd971f91/libs/langchain/langchain_classic/chains/api/base.py#L391)