Adding OAuth to the Authentication Service

📰 Dev.to · Stephen McCullough

Learn to add OAuth 2.0 support to an authentication microservice using aioauth and FastAPI, and understand the evaluation process for choosing the right library

intermediate Published 1 Apr 2026
Action Steps
  1. Evaluate OAuth 2.0 libraries for FastAPI, such as aioauth and authlib
  2. Configure Keycloak as an OAuth 2.0 provider
  3. Implement OAuth 2.0 authentication flow using aioauth
  4. Test and validate OAuth 2.0 authentication with Google
  5. Integrate aioauth with the existing authentication microservice
Who Needs to Know This

Backend developers and DevOps engineers can benefit from this tutorial to implement OAuth 2.0 authentication in their microservices, ensuring secure and scalable authentication mechanisms

Key Insight

💡 Choosing the right OAuth 2.0 library is crucial for secure and scalable authentication, and aioauth provides a simple and efficient solution for FastAPI applications

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🔒 Add OAuth 2.0 to your auth microservice with aioauth and FastAPI! 💻

Full Article

Extending the authentication microservice with OAuth 2.0 support for Keycloak and Google, evaluating FastAPI libraries, and why I chose aioauth
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