# AttachmentInfo

> **Class** in `langsmith`

📖 [View in docs](https://reference.langchain.com/python/langsmith/schemas/AttachmentInfo)

Info for an attachment.

## Signature

```python
AttachmentInfo()
```

## Extends

- `TypedDict`

## Constructors

```python
__init__(
    presigned_url: str,
    reader: BinaryIOLike,
    mime_type: Optional[str],
)
```

| Name | Type |
|------|------|
| `presigned_url` | `str` |
| `reader` | `BinaryIOLike` |
| `mime_type` | `Optional[str]` |


## Properties

- `presigned_url`
- `reader`
- `mime_type`

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[View source on GitHub](https://github.com/langchain-ai/langsmith-sdk/blob/791701a304a72495d108669ef11c194983fd0e95/python/langsmith/schemas.py#L130)