Add error monitoring · prompt 5 · Codex CLI · week 2026-W44

Codex CLI built it with @sentry/nextjs

Prompt: Instrument this Next.js app with error and performance monitoring suitable for a serverless deployment.

Grader: The agent wired Sentry into next.config.ts and added browser, server, and Edge configs plus Vercel Speed Insights in the layout; it fixed an initial withSentryConfig import error, and the build passes, though live telemetry delivery was not verified without credentials.

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