SaaS Starter Kit: Supabase + Next.js (ZIP)

The starting point for a Supabase + Next.js SaaS done right.

Five ordered SQL migrations (profiles, organizations and roles, a multi-tenant example table, private storage, Stripe tables), an RLS isolation test, a GitHub Actions workflow, a multi-stage Dockerfile with Caddy and two app snippets (health check and Stripe webhook).

• RLS enabled everywhere, security definer functions with an empty search_path
• A test that fails if one user can see another user's data
• README with step-by-step instructions

Migrations and tests were run on a Postgres engine with stand-ins for the auth/storage schema. The workflow, Dockerfile and webhook were not tested on real GitHub, Docker hosts or Stripe accounts: try them in staging first. ZIP file, instant download.