What it is — A curated set of 68 DESIGN.md files, each modelling the visual design system of a well-known brand (Linear, Vercel, Notion, Stripe, and more), meant to be dropped into Claude Design or a coding agent to scaffold an on-brand starter UI instead of a generic default.

Key points

• Each file follows nine standardised sections — colour roles, typography, components, layout, depth, constraints, responsive behaviour, and agent prompts.
• Uploading one to Claude Design produces CSS variables, font substitutes, and a working starter page in one pass.
• Explicitly framed as inspirations modelled on public patterns, not official brand kits — usage still needs to respect each brand's trademark rules.