create-saas-harness

Scaffold a Next.js 15 + Supabase SaaS monorepo with a built-in, agents-powered dev harness (orchestrator + subagents + roadmap + docs).

npx create-saas-harness-new@latest

It asks for a project name, target directory, and your stack — payments (Stripe or MercadoPago), storage (Supabase Storage or S3-compatible: R2/S3/MinIO), email (Resend or none for now) — then copies the template, wires the chosen adapters, prunes everything you didn't pick (code, SDK deps, env vars), installs deps, and makes the first commit. The workspace requires pnpm (corepack enable pnpm).

Every prompt is also a flag, so it runs unattended:

npx create-saas-harness-new@latest my-saas \
  --payments stripe --storage supabase --email resend -y

| Flag | Values | Default | | -------------------------- | ------------------------------- | -------------- | | --payments | stripe | mercadopago | stripe | | --storage | supabase | s3 | supabase | | --email | resend | none | resend | | --name | project name | directory name | | --install / --no-install | install dependencies | install | | --git / --no-git | git init + first commit | git | | -y, --yes | accept defaults, skip prompts | — |

Then, in your agent: run /project-setup to define your product (it writes FOUNDATIONS/* + PRODUCT.md, commits a concrete design system, and an executable roadmap), and read INSTRUCTIONS.md for the daily loop.

See the main repo for the full story. MIT licensed.