The design system community for AI builders

100s of free design systems for
AI-powered development

DESIGN.md is Google's new open format — a single markdown file your AI coding tool reads to build consistent UI. Whether you're vibe coding a side project or agentic coding a SaaS — find a design system, drop it in your project, and go.

How to use DESIGN.md in your project

Three steps. No setup. Works with any AI coding tool.

1

Download a DESIGN.md

Browse the library and download any design system as a single DESIGN.md file.

2

Drop it in your project

Drag the file into the root of your repo — next to your README.md. That's the whole install.

3

Ask your AI to use it

Tell Claude, Cursor, or any AI coding tool: "Use the @DESIGN.md file and style my app."