FastAPI + Next.js SaaS boilerplate
Production FastAPI SaaS Starter
Skip the first two weeks of SaaS plumbing. Start from auth, Postgres, billing, email flows, deployment, tests, CI, and documentation that already work together.
Auth included
Billing-ready
Railway deployable
Admin operations
What is included
The production foundation your SaaS needs before it feels real.
Use it when you already know the product you want to build, but do not want auth, subscriptions, deployment, and operations to slow you down before customers can use it.
Authentication that covers the real workflow
Signup, login, logout, password reset, email verification, protected routes, and account settings.
Postgres, migrations, validation, and clean API boundaries
SQLAlchemy models, Alembic migrations, Pydantic schemas, standard errors, and API documentation.
Billing and subscription checks for paid products
Free and Pro plans, checkout flow, customer portal, webhook handling, usage limits, and licence checks.
Admin, logging, rate limits, and background jobs
Admin screens, structured logs, worker-ready jobs, Redis integration, health checks, and production settings.
Docker, Railway, GitHub Actions, and environment docs
Local containers, production deployment guidance, staging notes, CI tests, secrets layout, and backup guidance.
Documentation that helps you move without guesswork
Setup scripts, architecture notes, deployment steps, diagrams, seed data, and example SaaS apps.
Who it fits
Choose the starting point that matches your next product.
Lite is for trying the core stack. Pro is for builders who want to launch a paid, customer-facing SaaS with fewer blank-page decisions.
Lite
Try the foundation
Best when you want to validate the stack first
- FastAPI API
- PostgreSQL
- Signup and login
- Docker local stack
- A simple example app
Pro
Build the paid app
Best when you want to ship a serious SaaS faster
- Billing and webhooks
- Email verification and reset
- Roles, permissions, and admin
- Background jobs and rate limits
- CI, tests, Railway, and deployment docs
Live examples
See the starter behave like a real product.
The demos are hosted on Railway and show how quickly you can turn the template into a live SaaS.
Pro example
Open Pro Demo
Customer Feedback Vault
A SaaS dashboard with demo login, admin-ready foundations, billing-shaped flows, and the production features included in Pro.
Lite example
Open Lite Demo
UtilityHub Lite
A public utility-style product showing Lite authentication, app-style navigation, saved reports, and PostgreSQL-backed user data.
From idea to usable SaaS
A starting point that already feels like an application.
You get the working pieces a customer-facing product needs: account flows, protected data, plan boundaries, billing hooks, admin visibility, and deployment guidance that gets you to a live URL quickly.
Plans
Pick the option that matches how you build.
Whether you are a solo founder, a small product team, or an agency delivering client work, the value is the same: start from a proven SaaS base and spend more time on the product people will actually pay for.
Best for founders who want one production-ready app foundation.
Best for teams starting several internal or customer-facing SaaS products.
Best for agencies that want to reuse the starter across paid client work.
Start past the setup slog