Date: 07/25/2025
Okay, this video on Supabase JWT signing keys is definitely worth checking out, especially if you’re like me and trying to level up your development game with AI and automation. In a nutshell, it shows how to switch your Supabase project to use asymmetric JWTs with signing keys, letting you validate user JWTs client-side instead of hitting the Supabase Auth server every time. The demo uses a Next.js app as an example, refactoring the code to use getClaims instead of getUser and walking through enabling the feature and migrating API keys. It also touches on key rotation and revocation.
Why is this so relevant for us? Well, imagine you’re building an AI-powered app that relies heavily on user authentication. Validating JWTs server-side becomes a bottleneck, impacting performance. This video provides a clear path to eliminating that bottleneck. We can use this approach not only for web apps but also adapt it for serverless functions or even integrate it into our AI agents to verify user identity and permissions locally. It will help improve performance and reduce dependence on external services, and in turn that will speed up our entire development/deployment cycles.
What I find particularly exciting is the potential for automation. The video mentions a single command to bootstrap a Next.js app with JWT signing keys. Think about integrating this into your CI/CD pipeline or using an LLM to generate the necessary code snippets for other frameworks. Faster authentication means faster feedback loops for users, and less dependency on external validation. It’s a small change that can yield huge performance and efficiency gains, and that makes it absolutely worth experimenting with.