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AWS Cognito OAuth Example

examples/auth/aws_oauth/README.md

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AWS Cognito OAuth Example

Demonstrates FastMCP server protection with AWS Cognito OAuth.

Setup

  1. Create an AWS Cognito User Pool and App Client:

    • Go to AWS Cognito Console
    • Create a new User Pool or use an existing one
    • Create an App Client in your User Pool
    • Configure the App Client settings:
      • Enable "Authorization code grant" flow
      • Add Callback URL: http://127.0.0.1:8000/auth/callback
      • Configure OAuth scopes (at minimum: openid)
    • Note your User Pool ID, App Client ID, Client Secret, and Cognito Domain Prefix

  2. Set environment variables:

    bash
    export FASTMCP_SERVER_AUTH_AWS_COGNITO_USER_POOL_ID="your-user-pool-id"
export FASTMCP_SERVER_AUTH_AWS_COGNITO_AWS_REGION="your-aws-region"
export FASTMCP_SERVER_AUTH_AWS_COGNITO_CLIENT_ID="your-app-client-id"
export FASTMCP_SERVER_AUTH_AWS_COGNITO_CLIENT_SECRET="your-app-client-secret"

    Or create a .env file:

    env
    FASTMCP_SERVER_AUTH_AWS_COGNITO_USER_POOL_ID=your-user-pool-id
FASTMCP_SERVER_AUTH_AWS_COGNITO_AWS_REGION=your-aws-region
FASTMCP_SERVER_AUTH_AWS_COGNITO_CLIENT_ID=your-app-client-id
FASTMCP_SERVER_AUTH_AWS_COGNITO_CLIENT_SECRET=your-app-client-secret

  3. Run the server:

    bash
    python server.py

  4. In another terminal, run the client:

    bash
    python client.py

The client will open your browser for AWS Cognito authentication.