Set up Clerk Use the Clerk CLI to add authentication. In agent environments, supported frameworks default to accountless setup: provisions a claimable application and writes temporary development keys without requiring a Clerk account. Before you start Show the user this checklist and wait for a yes: Existing authentication Before , inspect auth dependencies, routes, middleware, sessions, and user records — never environment files. If a different auth provider exists, stop and get approval for a migration plan covering: - Backend API user import, stable external IDs, compatible password hashe…