DESIGN.md Spec (Google)★★★★★
🆓 free🔌 drop-in
Google's open standard for describing a brand to any AI agent. No more vendor lock-in.
why it matters
Google open-sourced the DESIGN.md spec in April. It's the official format that tells any coding agent — Claude, Cursor, Codex, whatever — exactly what your brand looks like: colors, type, spacing, components, interaction states.
Before this, every tool invented its own slightly different DESIGN.md shape. Now there's a canonical one. If you're writing a DESIGN.md from scratch — or reading one — this is the reference. Apache 2.0, actively maintained, 3k stars in under a month.
install
Follow the spec at google-labs-code/design.md to write your own DESIGN.md by handwhere to find it
repo health★ 2,963
avoid if
You already use a tool that extracts DESIGN.md for you (dembrandt, design-extract). The spec is for hand-writing or verifying.
see it in action
open the module that demos DESIGN.md Spec (Google)