Design systems your LLM can read without a plugin

What it does

This repository is a curated index of official DESIGN.md documents published by companies themselves—not extracted by third parties. It tracks which teams have adopted the plain-markdown design system format introduced by Google Stitch, giving AI agents a single place to find first-party rules for colors, typography, and component behavior. The current roster holds eight entries, ranging from Ant Design and Atlassian to Vercel and Clerk.

The interesting bit

The format itself is the hook: DESIGN.md is just a markdown file dropped in a project root, with no JSON schemas or Figma plugins required. Because LLMs parse plain text more reliably than structured design tokens, the file acts as a bridge between human-readable brand guidelines and machine-readable instructions.

Key highlights

• Tracks first-party files only—every entry is published by the company itself, not reverse-engineered
• Currently lists eight official adopters including Vercel, Nuxt, Resend, and Mintlify
• Complements a sister repo (awesome-design-md) that catalogs community-extracted versions
• Each entry links directly to the living document, so the index stays current by default
• MIT licensed, with a low-friction contribution process via issues and PRs

Caveats

• Only eight entries so far, so coverage is limited to early adopters willing to experiment
• The DESIGN.md standard is new, and the README notes that official adoption is still growing

Verdict

Worth bookmarking if you build AI coding tools or want to see which design systems are betting on LLM-native documentation. Skip it if you are looking for a comprehensive, battle-tested design token specification—this is an early, lightweight directory.