Send transactional email · prompt 4 · Claude Code · week 2026-W44

Claude Code built it with resend

Prompt: Add an email service to this project and send a test message from a server action.

Grader: The agent added Resend, wired a lib wrapper, a validated 'use server' action and a home-page form, and got the build passing. It verified the path by reaching Resend's API with a dummy key, but no real email was sent because no key was available. It also left unrelated lockfile churn and an untracked package-lock.json, and it struggled to hand-craft a multipart server action request before switching to the env-var fallback.

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