# DownloadURL

> **Class** in `langsmith`

📖 [View in docs](https://reference.langchain.com/python/langsmith/sandbox/_models/DownloadURL)

A link that downloads one sandbox file with no LangSmith credential.

The link is pinned to the sandbox, the file path, and the response
headers, so it cannot be repointed at another file. It is pinned to the
path rather than to a snapshot of the contents, so the file must not be
modified while the link is in use.

## Signature

```python
DownloadURL(
    self,
    download_url: str,
    token: str,
    expires_at: Optional[str] = None,
)
```

## Constructors

```python
__init__(
    self,
    download_url: str,
    token: str,
    expires_at: Optional[str] = None,
) -> None
```

| Name | Type |
|------|------|
| `download_url` | `str` |
| `token` | `str` |
| `expires_at` | `Optional[str]` |


## Properties

- `download_url`
- `token`
- `expires_at`

## Methods

- [`from_dict()`](https://reference.langchain.com/python/langsmith/sandbox/_models/DownloadURL/from_dict)

---

[View source on GitHub](https://github.com/langchain-ai/langsmith-sdk/blob/19d52419f47c93ca2c57a0d51c58d255f5949092/python/langsmith/sandbox/_models.py#L773)