# MCPReauthRequiredError

> **Class** in `deepagents_code`

📖 [View in docs](https://reference.langchain.com/python/deepagents-code/mcp_auth/MCPReauthRequiredError)

Raised when an MCP server needs interactive re-authentication.

## Signature

```python
MCPReauthRequiredError(
    self,
    server_name: str,
)
```

## Extends

- `RuntimeError`

## Constructors

```python
__init__(
    self,
    server_name: str,
) -> None
```

| Name | Type |
|------|------|
| `server_name` | `str` |


## Properties

- `server_name`

---

[View source on GitHub](https://github.com/langchain-ai/deepagents/blob/0412009c5441bef8d75a427e1da8909e33ab5b56/libs/code/deepagents_code/mcp_auth.py#L852)