Flask REST API Boilerplate — Production-Ready Starter Kit

Stop rebuilding the same Flask setup every time

A clean, production-ready REST API boilerplate that gives you a battle-tested foundation in minutes — app-factory pattern, blueprints, validation, pagination, tests, and docs, all wired up and ready to extend.

What's inside

• App-factory + blueprints — scalable, organized structure

• Versioned API under /api/v1

• Full CRUD example resource (create, read, update, delete)

• Pagination & search out of the box

• marshmallow validation with clean 422 errors

• JSON everywhere — even 404 / 405 / 500 return JSON, never HTML

• SQLAlchemy 2.x + Flask-Migrate, timezone-aware UTC timestamps

• Config per environment (dev / testing / production) via env vars

• SQLite by default — swap to PostgreSQL or MySQL with one variable

• Full pytest suite — 15 tests, zero warnings

• gunicorn-ready WSGI entry point

Tech stack

Python 3.11+, Flask 3, Flask-SQLAlchemy, Flask-Migrate, marshmallow, python-dotenv, gunicorn, pytest.

Who it's for

Freelancers, indie hackers, and teams who want to skip the boilerplate and start shipping API features today.

What you get

A clean ZIP with the full source, tests, optional Postgres/MySQL driver files, a professional README, and a POC report showing the test suite passing plus a live curl smoke test.

License: MIT — use it in unlimited personal and commercial projects.