# 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/19d52419f47c93ca2c57a0d51c58d255f5949092/python/langsmith/_openapi_client/_files.py#L25)