We Open-Sourced a Tool That Builds Full-Stack SaaS Apps Using AI

We open-sourced a tool that builds full-stack SaaS apps using AI (Next.js + Supabase), would love your feedback!

Back when Django came out, it changed the game for backend development, admin panels, auth, and ORM were just… there.

Then, Create React App made frontend development as easy as npx.

Now, with LLMs becoming more agentic, we’re exploring:

What if AI could build entire SaaS apps — from scratch — autonomously?

⚡ Meet saas-builder

A side project turned open-source tool.
saas-builder is an AI-native CLI that scaffolds full-stack apps using models like GPT-4.1, Claude, or Gemini.

It’s built to help you go from idea to working app in minutes.

💡How It Works

You run:

saas-builder init

And behind the scenes, multiple agents kick in:

🖼️ UI Agent → generates a fully responsive Next.js frontend

🔐 Auth Agent → wires up Supabase Auth

🗃️ DB Agent → creates schema, migrations, types

🧪 Terminal Agent → installs packages, sets up folders

🌐 Browser Agent → launches the app locally

You describe your app → You get a clean, typed, ready-to-deploy SaaS scaffold with Supabase + Next.js.

🧠 Why We Built This

• To stop repeating the same boilerplate for every new project

• To explore what agentic software development could actually look like

🔓 Open Source Details

• MIT License

• Install via: pip install saas-builder

• Tech stack: LLMs + Next.js + Supabase

Still early-stage — but already usable and hackable

🙌 We’d Love Your Feedback

Try it. Break it. Fork it. Suggest features. Or just tell us if this direction makes sense.

🔗 GitHub:github.com/jatingarg619/saas-builder