Add a Postgres database · prompt 5 · Codex CLI · week 2026-W44-vercel-template

Codex CLI did not finish with @neondatabase/serverless

Prompt: Set up a hosted Postgres database for this Next.js app, with a connection that works from serverless functions.

Grader: The agent chose Neon's serverless HTTP driver and wired a server-only db helper and /api/health/db route, and the build passed, but it never connected to a live database because no DATABASE_URL or Vercel/Neon account was available, so it asked the user to supply credentials.

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