clerk-setup

Adding Clerk authentication to a Next.js app requires installing the correct Clerk integration package, wiring up the provider, applying route protection middleware, and configuring publishable and secret key environment variables.

Yes, you can migrate users from NextAuth, Firebase Auth, Auth0, Supabase Auth, or custom sessions to Clerk. The process guides you through transitioning existing auth systems without losing users or breaking active sign-in flows.

Yes, Clerk authentication works with Express APIs and Astro sites. The setup selects the correct framework-aware integration path, applying the necessary packages, provider wiring, and route guards for your specific environment.

Configuring Clerk setup requires environment variables including your publishable key and secret key. These keys connect your application to Clerk's authentication backend and must be properly set before route protection and provider wiring will function.

Protecting routes during Clerk authentication setup involves applying middleware or route guards specific to your framework. The integration configures these protections alongside the provider wiring to secure application endpoints properly.