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.
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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."