fastmcp/docs/python-sdk/fastmcp-server-auth-providers-google.mdx

---
title: google
sidebarTitle: google
---

# `fastmcp.server.auth.providers.google`


Google OAuth provider for FastMCP.

This module provides a complete Google OAuth integration that's ready to use
with just a client ID and client secret. It handles all the complexity of
Google's OAuth flow, token validation, and user management.

Example:
    ```python
    from fastmcp import FastMCP
    from fastmcp.server.auth.providers.google import GoogleProvider

    # Simple Google OAuth protection
    auth = GoogleProvider(
        client_id="your-google-client-id.apps.googleusercontent.com",
        client_secret="your-google-client-secret"
    )

    mcp = FastMCP("My Protected Server", auth=auth)
    ```


## Classes

### `GoogleTokenVerifier` <sup><a href="https://github.com/PrefectHQ/fastmcp/blob/main/src/fastmcp/server/auth/providers/google.py#L57" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>


Token verifier for Google OAuth tokens.

Google OAuth tokens are opaque (not JWTs), so we verify them by calling
Google's tokeninfo endpoint with the access token as a query parameter.
This returns the OAuth app ID (``aud``), granted scopes, and expiry time.
User profile data (name, picture, etc.) is fetched separately from the
v2 userinfo endpoint when the token is valid.


**Methods:**

#### `verify_token` <sup><a href="https://github.com/PrefectHQ/fastmcp/blob/main/src/fastmcp/server/auth/providers/google.py#L92" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

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

Verify a Google OAuth token using the tokeninfo endpoint.

Calls ``https://oauth2.googleapis.com/tokeninfo?access_token=TOKEN``
to validate the token and retrieve the OAuth app ID (``aud``), granted
scopes, and expiry time.  On success, fetches user profile data from
the v2 userinfo endpoint to populate name, picture, and locale claims.


### `GoogleProvider` <sup><a href="https://github.com/PrefectHQ/fastmcp/blob/main/src/fastmcp/server/auth/providers/google.py#L204" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>


Complete Google OAuth provider for FastMCP.

This provider makes it trivial to add Google OAuth protection to any
FastMCP server. Just provide your Google OAuth app credentials and
a base URL, and you're ready to go.

Features:
- Transparent OAuth proxy to Google
- Automatic token validation via Google's tokeninfo API
- User information extraction from Google APIs
- Minimal configuration required