# Playbook Answer Format Every answer must include these 7 sections: ## PREREQS — tools, accounts, keys, permissions needed ## TASKS — atomic ordered steps; each has tool+version+command and gotcha ## OUTCOME — expected result tied to the question's goal ## TESTED ON — env + OS + date last verified ## COST — time + money estimate ## FIELD NOTE — one production-only insight (required differentiator) ## ROLLBACK — undo path if it fails mid-way ## Example ``` ## PREREQS - Node.js >=18, npm, Vercel CLI (`npm i -g vercel`) ## TASKS 1. `npx create-next-app@14 my-app --ts` — gotcha: say no to src/ dir 2. `cd my-app && vercel link` — gotcha: pick your team, not personal 3. `vercel env add DATABASE_URL` — paste connection string 4. `vercel --prod` — gotcha: first deploy takes ~90s ## OUTCOME Live HTTPS URL on vercel.app serving your Next.js 14 app. ## TESTED ON macOS 14.3, Node 20.11, 2025-01-15 ## COST 5 min setup. Free tier covers it. ## FIELD NOTE Vercel caches aggressively — add `?v=1` to API routes during testing or you'll debug stale responses for an hour. ## ROLLBACK `vercel rm my-app --yes` removes the project and all deployments. ```