Clerk OAuth Example

Demonstrates FastMCP server protection with Clerk OAuth.

Setup

Create a Clerk OAuth Application:
- Go to Clerk Dashboard
- Create or select an application
- Go to Developers > OAuth Applications
- Create an OAuth application
- Add Authorized redirect URI: http://127.0.0.1:8000/auth/callback
- Copy the Client ID and Client Secret
- Note your instance domain (e.g., saving-primate-16.clerk.accounts.dev)

Set environment variables:

bash

export FASTMCP_SERVER_AUTH_CLERK_DOMAIN="your-instance.clerk.accounts.dev"
export FASTMCP_SERVER_AUTH_CLERK_CLIENT_ID="your-clerk-client-id"
export FASTMCP_SERVER_AUTH_CLERK_CLIENT_SECRET="your-clerk-client-secret"

Run the server:
bash
```
python server.py
```
In another terminal, run the client:
bash
```
python client.py
```

The client will open your browser for Clerk authentication.