Add user authentication · prompt 1 · Claude Code · week 2026-W44

Claude Code built it with jose

Prompt: Add user sign-up and login to this Next.js app. Protect the /dashboard route. Install whatever you need and make `npm run build` pass.

Grader: Agent built custom email/password auth with bcryptjs hashing, jose-signed session cookies, server actions, and a proxy guarding /dashboard; build passed and it smoke-tested the flow on a production server, though it struggled with multipart form encoding in its test harness and stores users in a local JSON file.

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