Start your SaaS from month three, not day one.

What’s inside

Everything in SaaS Starter Kit.

• Multi-tenancy that fails closed — an EF Core query filter on every tenant-owned table; no signed-in business means no rows
• Self sign-up into a trial — a new business creates its account and lands signed in as the owner
• Sign-in done properly — JWT access tokens, rotating hashed refresh tokens in an HttpOnly cookie, reuse detection and lockout
• Roles and permissions — Owner, Administrator, Manager, Member and custom roles; nobody can grant more than they hold
• Branches — locations per business with per-user access
• Plans and billing — server-enforced limits, trial / past-due / read-only states, and a signed webhook ready for Stripe or Paddle
• An audit log nobody can edit — every change with before and after values, sign-ins and failures
• A worked example — a complete Customers module and a step-by-step guide to adding your own
• Operations included — Docker Compose, health checks, security headers, rate limiting, backup scripts, GitHub Actions CI
• Tested against a real database — 31 integration tests run the real API against SQL Server