docs/python-sdk/fastmcp-client-oauth_callback.mdx

---
title: oauth_callback
sidebarTitle: oauth_callback
---

# `fastmcp.client.oauth_callback`



OAuth callback server for handling authorization code flows.

This module provides a reusable callback server that can handle OAuth redirects
and display styled responses to users.


## Functions

### `create_callback_html` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/client/oauth_callback.py#L25" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

```python
create_callback_html(message: str, is_success: bool = True, title: str = 'FastMCP OAuth', server_url: str | None = None) -> str
```


Create a styled HTML response for OAuth callbacks.


### `create_oauth_callback_server` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/client/oauth_callback.py#L197" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

```python
create_oauth_callback_server(port: int, callback_path: str = '/callback', server_url: str | None = None, response_future: asyncio.Future | None = None) -> Server
```


Create an OAuth callback server.

**Args:**
- `port`: The port to run the server on
- `callback_path`: The path to listen for OAuth redirects on
- `server_url`: Optional server URL to display in success messages
- `response_future`: Optional future to resolve when OAuth callback is received

**Returns:**
- Configured uvicorn Server instance (not yet running)


## Classes

### `CallbackResponse` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/client/oauth_callback.py#L183" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

**Methods:**

#### `from_dict` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/client/oauth_callback.py#L190" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

```python
from_dict(cls, data: dict[str, str]) -> CallbackResponse
```

#### `to_dict` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/client/oauth_callback.py#L193" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

```python
to_dict(self) -> dict[str, str]
```