"One JWT, five services, and the python-jose audience list trap"

📰 Dev.to · Takayuki Kawazoe

Learn how to handle JWT audience claims with multiple services using python-jose, and why it matters for authentication and authorization in microservices architecture

intermediate Published 16 May 2026
Action Steps
  1. Implement JWT authentication using python-jose
  2. Configure audience claims for multiple services
  3. Handle audience claim validation for each service
  4. Use a workaround to accept a list of audiences
  5. Test and verify the authentication flow
Who Needs to Know This

This micro-lesson is beneficial for software engineers, DevOps teams, and security experts who work with microservices architecture and authentication protocols like JWT. It helps them understand how to handle audience claims with multiple services and avoid common pitfalls

Key Insight

💡 The python-jose library requires the audience claim to be a string or None, but the JWT spec allows for a list of audiences, so a workaround is needed

Share This
💡 Handle JWT audience claims with multiple services using python-jose #jwt #authentication #microservices

Key Takeaways

Learn how to handle JWT audience claims with multiple services using python-jose, and why it matters for authentication and authorization in microservices architecture

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