The Unsexy Stack

These docs are the open core of The Unsexy Stack — a production SaaS boilerplate built on FastAPI + Next.js 15 + PostgreSQL + Clerk + Stripe. Everything here is documented from the real shipped code. The API Reference is generated from the product’s own openapi.json — it is a browsable reference of the backend contract, not a live server.

Architectural reference — what’s public vs paid

These public docs outline the patterns, schemas, structure, and design decisions of the stack, with real code excerpts, so you can judge the architecture and the developer experience before you pay. The complete, fully-wired codebase, the 199-test suite (144 backend + 55 frontend), the full step-by-step setup/deploy/customization guides, the 16–19 offline PDF manuals (by tier), and the commercial license ship instantly inside the download. Inspect freely here; buy when you’re convinced.

See the hard parts

JWKS-cached auth, idempotent Stripe webhooks, and race-safe provisioning — the plumbing every SaaS needs and nobody wants to re-write. Architecture

It ships tested

199 tests (144 backend, 55 frontend), 98% backend coverage, with a real-Postgres integration lane. Testing

Hardened by default

slowapi rate limiting, locked-down CORS, structured request-ID logging, and a 20-item checklist mapped to OWASP ASVS L1. Security

Deploy without lock-in

systemd + nginx + certbot for any $5/month VPS. Docker Compose ships in Professional; Agency adds CI/CD and client-delivery rights. Deployment

What this is (and is not)

This is a single-tenant boilerplate by default, with clean patterns to extend for B2B multi-tenancy. It is the clean, complete core: auth and billing wired and tested, with deploy configs included. It is not a tutorial and not a framework that owns you — every dependency is a mainstream, swappable choice behind a clear boundary.

Ready to ship? Get it on the landing page →