---
title: propelauth
sidebarTitle: propelauth
---

# `fastmcp.server.auth.providers.propelauth`


PropelAuth authentication provider for FastMCP.

Example:
    ```python
    from fastmcp import FastMCP
    from fastmcp.server.auth.providers.propelauth import PropelAuthProvider

    auth = PropelAuthProvider(
        auth_url="https://auth.yourdomain.com",
        introspection_client_id="your-client-id",
        introspection_client_secret="your-client-secret",
        base_url="https://your-fastmcp-server.com",
        required_scopes=["read:user_data"],
    )

    mcp = FastMCP("My App", auth=auth)
    ```


## Classes

### `PropelAuthTokenIntrospectionOverrides` <sup><a href="https://github.com/PrefectHQ/fastmcp/blob/main/src/fastmcp/server/auth/providers/propelauth.py#L36" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

### `PropelAuthProvider` <sup><a href="https://github.com/PrefectHQ/fastmcp/blob/main/src/fastmcp/server/auth/providers/propelauth.py#L43" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>


PropelAuth resource server provider using OAuth 2.1 token introspection.

This provider validates access tokens via PropelAuth's introspection endpoint
and forwards authorization server metadata for OAuth discovery.

For detailed setup instructions, see:
https://docs.propelauth.com/mcp-authentication/overview


**Methods:**

#### `get_routes` <sup><a href="https://github.com/PrefectHQ/fastmcp/blob/main/src/fastmcp/server/auth/providers/propelauth.py#L130" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

```python
get_routes(self, mcp_path: str | None = None) -> list[Route]
```

Get routes for this provider.

Includes the standard routes from the RemoteAuthProvider (protected resource metadata routes (RFC 9728)),
and creates an authorization server metadata route that forwards to PropelAuth's route

**Args:**
- `mcp_path`: The path where the MCP endpoint is mounted (e.g., "/mcp")
This is used to advertise the resource URL in metadata.


#### `verify_token` <sup><a href="https://github.com/PrefectHQ/fastmcp/blob/main/src/fastmcp/server/auth/providers/propelauth.py#L174" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

```python
verify_token(self, token: str) -> AccessToken | None
```

Verify token and check the ``aud`` claim against the configured resource.

