What To Do
From an idea to a scoped, scaffolded, running project in one prompt.
Describe an app idea in a sentence and What To Do turns it into a full PRD, a recommended tech stack with reasoned alternatives, and a downloadable boilerplate project scaffolded to match, with a live in-browser preview before you ever download a single file.
Try it
Live: whattodoby.filheinzrelatorre.com - no account needed to generate a PRD and preview a boilerplate; sign in to save projects.
CLI: npx create-whattodo "your idea" scaffolds the generated project straight onto your machine, no browser needed — see packages/create-whattodo.
How it works
- Idea to PRD - a short prompt is expanded into a structured product-requirements document (problem, scope, sections, edge cases) via Groq.
- PRD to stack recommendation - the PRD is matched against a stack matrix (framework, database, auth, hosting) with a primary pick plus alternatives and the reasoning behind each.
- Stack to boilerplate - a real, runnable project is generated from a registry of templates (currently Next.js + Postgres + Drizzle, FastAPI + Postgres): a schema-aware homepage that actually fetches and posts to its own generated API route, not a static placeholder next to a disconnected backend, then zipped for download.
- Live verification - the generated project boots in-browser via WebContainer before download, so what you get is a project that's already been proven to run, not just a set of files that should.
Tech stack
| Layer | Choice |
|---|
| Framework | Next.js 16 (App Router), React 19, TypeScript |
| Auth | NextAuth (Auth.js) with Drizzle adapter |
| Database | PostgreSQL (Neon) via Drizzle ORM |
| LLM | Groq |
| In-browser runtime | WebContainer API (live boilerplate preview) |
| Object storage | Cloudflare R2 (S3-compatible, AWS SDK client) |
| Jobs / caching | Upstash QStash + Redis |
| Validation | Zod |
| Styling | Tailwind CSS v4 |
| CLI | create-whattodo — plain Node, zero UI dependencies, jszip for extraction |
Local setup
pnpm install
cp .env.example .env # fill in the values
pnpm db:generate # generate Drizzle migrations
pnpm db:migrate # apply migrations
pnpm dev # http://localhost:3000
Scripts
pnpm dev # dev server
pnpm build # production build
pnpm start # serve the production build locally
pnpm lint # eslint
pnpm db:generate # generate a Drizzle migration from schema
pnpm db:migrate # apply migrations
pnpm r2:lifecycle # configure R2 bucket lifecycle rules
Deployment
Deployed on Vercel, connected to this repository. Push to master to deploy.
About the developer
Fil Heinz O. Re La Torre - Automation & AI Solutions Engineer, building integrations and AI-backed workflows that go from idea to production in days.
Other projects: Match · ZeroPress · Mimo · Insight · see all →
