extract
Refactoring pass — extracts repeated Tailwind class combos and markup into components, and lifts magic values into design tokens. Use when the codebase has obvious duplication, hardcoded hex values or pixel sizes, or when the user says "clean this up" / "extract components" / "tokenize styles". Invoke when the user asks for extract on their UI, or mentions 'extract' alongside design / UI / frontend work.
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Install
Works with every agent the skills CLI supports.
npx skills add https://github.com/educlopez/ui-craft --skill extract- 01
Install
Run the command in your project. The CLI asks which agents to install for.
- 02
Describe the task
Ask your agent for something this skill covers. It loads extract automatically when relevant.
- 03
Review the result
The agent follows the SKILL.md steps, scripts and references bundled with the skill.
SKILL.md
The instructions your agent reads when the skill is triggered.
Context: this sub-skill is one lens of the broader ui-craft skill. If the ui-craft skill is also installed, read its SKILL.md first for Discovery + Anti-Slop + Craft Test, then apply the specific lens below.
Extract reusable pieces from $ARGUMENTS. Load the ui-craft skill.
Step 1 — Scan the target for extraction candidates:
- Repeated Tailwind class combos — any class string that appears ≥3 times becomes a component (or a
cva/tvvariant if the project uses one — check first). - Magic values — hex colors, pixel sizes, shadow definitions, font sizes, z-index values appearing in literal form. Lift into CSS variables or
theme.extend. - Repeated markup — blocks that differ only by text/props collapse into a single component with props.
Step 2 — Match the project's conventions, don't impose new ones:
- Naming — look at neighboring components. PascalCase file? kebab-case file? Named export vs default export? Match exactly.
- Location — check
components/ui/,ui/,primitives/,src/components/before creating a new directory. Reuse. - Tokens — respect existing CSS variable naming (
--color-*,--space-*,--font-*,--radius-*). Don't introduce a parallel system.
Step 3 — Anti-Slop Test on every new component (from SKILL.md):
- Component name must be domain-specific, not generic.
MetricCard/PricingTier/InviteRowbeatsCard/Box/Item. - If the component is generic ("a card with a title and description"), ask yourself whether it should instead be an inline composition — premature abstraction is worse than repetition.
Step 4 — Update every call-site. No half-migrations.
Knob-agnostic — DRY is not tunable.
References to read: references/layout.md (composition patterns), references/typography.md and references/color.md (token naming), plus the project's existing component library (scan before writing).
Output:
- The new component file(s) + any token additions.
- A table showing every call-site update:
| File | Before | After |
|---|
- A one-line delta: "Extracted N components, M tokens. Call-sites updated: X."
Next step: /tokens — lift the values you just centralized into the token spine (rung 2).
FAQ
What does the extract skill do?
Refactoring pass — extracts repeated Tailwind class combos and markup into components, and lifts magic values into design tokens. Use when the codebase has obvious duplication, hardcoded hex values or pixel sizes, or when the user says "clean this up" / "extract components" / "tokenize styles". Invoke when the user asks for extract on their UI, or mentions 'extract' alongside design / UI / frontend work.
How do I install extract?
Run npx skills add https://github.com/educlopez/ui-craft --skill extract in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/extract/ (personal) or .claude/skills/extract/ (project).
Which AI agents can use extract?
Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.
Is extract safe to install?
No partner security audit is available yet. Skills can run commands and scripts, so read the SKILL.md and any bundled files before installing.
Who maintains extract?
It is published by educlopez in educlopez/ui-craft. It has 544 recorded installs.
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