# is_base64_file_input

> **Function** in `langsmith`

📖 [View in docs](https://reference.langchain.com/python/langsmith/_openapi_client/_files/is_base64_file_input)

## Signature

```python
is_base64_file_input(
    obj: object,
) -> TypeGuard[Base64FileInput]
```

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[View source on GitHub](https://github.com/langchain-ai/langsmith-sdk/blob/d6cd6082f09e7826a2d6afe444ae6119e61b82a6/python/langsmith/_openapi_client/_files.py#L25)