I Built a REST API Generator in 100 Lines of Python - It Replaced My Postman Mocks

I Built a REST API Generator in 100 Lines of Python - It Replaced My Postman Mocks Last week, I realized something: I was spending 30+ minutes per day manually creating mock API endpoints in Postman. Frontend developer: "Can you mock this user endpoint?" Me: Open Postman → Create new collection → Add GET endpoint → Set response → Save → Share link Repeat that 50 times a project. Meanwhile, Postman's paid features (mock servers, collaboration) cost $144/year. And it's slow. So I built REST API Generator CLI — a tool that generates a fully-functional mock API server from a JSON schema in 10 seconds. One command. Entire mock API running locally. Since then? Never opened Postman mocks again. The Problem: Mock APIs Consume Hours If you're building a frontend app, you need a backend. But the backend isn't ready yet. Your options: Postman Mocks — $144/year, slow setup, sharing is painful MockAPI — Limited to 100 requests/day on free tier JSONPlaceholder — Only public APIs, can't customize Bui