Add user authentication · prompt 4 · Codex CLI · week 2026-W44

Codex CLI built it with @clerk/nextjs

Prompt: Protect this app behind a login page. Use a hosted auth provider so I don't manage passwords.

Grader: The agent integrated Clerk with ClerkProvider, a proxy that blocks protected routes, a sign-in page, and a sign-out account menu, and the build passed. It hit an Invalid URL error in its first smoke test and reran the checks successfully, and it also bumped React and Next and added stray files like pnpm-workspace.yaml and package-lock.json. Live sign-in still needs the user's Clerk keys, which is inherent to a hosted provider.

Replay of the real agent session in an isolated sandbox. Tool output is truncated for readability.