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extract-design-system

Skill32 starsChanged 6 months agoMITView on GitHub

Reverse-engineers design tokens (colors, typography, spacing, border radius, shadows) from any public website and generates tokens.json and tokens.css for local projects. Skill plus a bundled CLI the agent runs. Outputs token files, not a DESIGN.md document.

14 other projects use a version of this.

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Projects with it also use tailwind-design-system, find-animation-opportunities and 10 more.

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Files found in the same public projects as a version of this one, more often than they turn up anywhere else. Each project counts once, large collections count for less, and this file's own repository is left out.
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The file

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SKILL.md

extract-design-system

Catalogue stub — full skill: arvindrk/extract-design-system

<!-- das:install:start — generated from stub.yaml by `npm run generate`; edit stub.yaml, not this block -->

Decision tree

  1. Is the full skill already installed?
    • Global: f=~/.agents/skills/extract-design-system/SKILL.md; [ -f "$f" ] && ! grep -q "^das:" "$f" && echo "installed" || echo "pointer"
    • Project: f=.agents/skills/extract-design-system/SKILL.md; [ -f "$f" ] && ! grep -q "^das:" "$f" && echo "installed" || echo "pointer"
    • installed → the skill is installed as extract-design-system, invoke it and proceed
    • pointer → go to step 2

  2. Detect scope, then install:

    [ -e ~/.agents/skills/extract-design-system ] && echo "global" || echo "project"

    Global:

    npx skills add arvindrk/extract-design-system --skill extract-design-system -g -y

    Project:

    npx skills add arvindrk/extract-design-system --skill extract-design-system -y

    Claude Code: send a command as a chat message starting with ! to run it without leaving the conversation.

Heads-up

  • Requires: Node.js with npx and network access (at use time the skill runs npx playwright install chromium and the extract-design-system npm package)
  • License: MIT
<!-- das:install:end -->

Invoke after install

  • Skill name: extract-design-system
  • Triggers: "extract design system", "reverse-engineer tokens", "extract tokens from website"

What it does

Reverse-engineers starter design tokens from a public website URL. The skill has the agent run the extract-design-system CLI (a headless Chromium crawl) and then summarise what it found: likely primary, secondary and accent colors, detected fonts, and the spacing, radius and shadow scales. It writes .extract-design-system/raw.json and normalized.json, plus a W3C-style design-system/tokens.json and a design-system/tokens.css of CSS custom properties. It extracts tokens and starter assets, not a component library, and it asks before changing any existing app code or styles. Results are good for initialising a project, not pixel-perfect reproduction.

When NOT to use

  • Figma-source token extraction → use the Figma MCP (figma-official-skills) or figma-variables-tokens-generator
  • A DESIGN.md spec document rather than token files → use extract-design-md
  • Building a token architecture from scratch → use design-tokens-skill

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