AI coding tools like Cursor, Claude Code, and GitHub Copilot can generate interfaces quickly. But getting them to follow a consistent design system is another challenge.

Without clear design instructions, AI-generated interfaces can end up with inconsistent colors, typography, spacing, buttons, and layouts.

That's where DESIGN.md comes in.

I found a useful free resource for developers: CodeRef DESIGN.md Library.

What is DESIGN.md?

DESIGN.md is a Markdown file that describes a project's visual design system.

It can include:

  • Color palettes and theme definitions
  • Typography and font families
  • Spacing and layout guidelines
  • Buttons, cards, and UI components
  • Border radius and shadows
  • Design principles and visual guidelines
  • Component styling rules

You can place this file in your project root and instruct your AI coding agent to follow it when generating UI.

Explore 1,928 Free Design Systems

The CodeRef library currently includes 1,928 design systems across seven collections.

Some available collections include:

  • Web: Design systems inspired by popular product websites.
  • Mobile: Mobile app design systems with SwiftUI, Android, and Expo variants.
  • Brands: 563 company design systems.
  • Indie: 295 personal websites and portfolio styles.
  • Terminal: Design systems for command-line interfaces.
  • Styles: 759 visual styles and design movements.
  • Examples: Reference implementations of the DESIGN.md format.

You can explore styles inspired by products and brands such as Apple, Google, Stripe, Linear, Vercel, Notion, Figma, and more.

How to Use DESIGN.md with AI Coding Tools

Getting started is simple.

Step 1: Find a design system

Visit the library:

https://coderef.xyz/design-md/

Browse the available collections and choose a design that matches your project.

Step 2: Download DESIGN.md

You can copy or download the file directly.

You can also use curl:

curl -o DESIGN.md https://cdn.coderef.xyz/design-md/files/web/linear.app/DESIGN.md

Step 3: Add it to your project

Place DESIGN.md in your project's root directory.

Your project structure will look something like this:

my-project/ ├── DESIGN.md ├── package.json ├── src/ ├── public/ └── README.md

Step 4: Give instructions to your AI coding agent

For example, use this prompt:

Build a modern SaaS landing page. Follow the DESIGN.md file for all design decisions, including: - Colors - Typography - Spacing - Components - Buttons - Layout - Visual consistency Do not introduce unrelated design styles.

Your AI agent can use the file as additional design context.

Step 5: Customize it

You don't have to follow the original design exactly. Modify the colors, typography, spacing, and component rules to match your own brand.

Compatible AI Coding Workflows

You can use DESIGN.md as project context with AI coding tools such as:

  • Cursor
  • Claude Code
  • GitHub Copilot
  • Other AI coding agents that support project-level Markdown instructions

Why Developers Should Try It

If you're building SaaS dashboards, landing pages, admin panels, mobile apps, or personal websites with AI, maintaining a consistent design language is important.

Instead of explaining your design preferences repeatedly in every prompt, keep them in a reusable Markdown file.

It makes your design instructions easier to maintain, reuse, and share across projects.

Get the Free DESIGN.md Library

Explore and download design systems for free:

Explore CodeRef DESIGN.md Library →

No need to start every project with a blank design system. Find a style, download the Markdown file, and give your AI coding agent a clearer visual direction.

Happy building! 🚀