css-token-sweep
Statically scan a CSS / single-file HTML / multi-file frontend project for references to undefined CSS custom properties — the silent class of bug where `color: var(--ink-2)` is written but `--ink-2` is never declared in any `:root { ... }` block, and the text renders invisible because `var()` with no fallback resolves to the unset initial value. TRIGGER this skill whenever the user says any of: "css token", "design token", "var(", "custom property", "css variable", "theme variants", "invisible text", "missing token", "lint css", "audit my design system", "check theme", "verify dark mode tokens", "find undefined css vars", "make sure my styles are consistent", "sweep my app", "make sure this doesn't happen again" (in the context of a CSS contrast / visibility bug), or whenever they're adding theme variants / tokens to a Firebase-style single-file HTML app. Also use this proactively after writing new CSS styles in a project that uses CSS custom properties — the safety net is cheap; the
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Install this skill
Run this command in your terminal. No account required — it auto-detects your AI tool and installs the skill file.
npx @skills-hub-ai/cli install css-token-sweepSetup by platform
Install
One-click setup for your editorRun in your project root
npx @skills-hub-ai/cli install css-token-sweep --target claude-codeInstructions
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Frequently asked questions about css-token-sweep
What does the css-token-sweep skill do?
Statically scan a CSS / single-file HTML / multi-file frontend project for references to undefined CSS custom properties — the silent class of bug where `color: var(--ink-2)` is written but `--ink-2` is never declared in any `:root { ... }` block, and the text renders invisible because `var()` with no fallback resolves to the unset initial value. TRIGGER this skill whenever the user says any of: "css token", "design token", "var(", "custom property", "css variable", "theme variants", "invisible text", "missing token", "lint css", "audit my design system", "check theme", "verify dark mode tokens", "find undefined css vars", "make sure my styles are consistent", "sweep my app", "make sure this doesn't happen again" (in the context of a CSS contrast / visibility bug), or whenever they're adding theme variants / tokens to a Firebase-style single-file HTML app. Also use this proactively after writing new CSS styles in a project that uses CSS custom properties — the safety net is cheap; the It's a reusable SKILL.md instruction set that loads into your AI coding assistant on demand, no prompt engineering, no copy-pasting every session.
How do I install the css-token-sweep skill?
Run `npx @skills-hub-ai/cli install css-token-sweep` from your terminal. The CLI writes the SKILL.md to the correct location for your AI tool (e.g. ~/.claude/skills/css-token-sweep/ for Claude Code or ~/.cursor/skills/ for Cursor with --target cursor) and adds it to your project's .skills.json lockfile.
Which AI tools does css-token-sweep work with?
css-token-sweep runs in Claude Code. It follows the open Agent Skills standard (SKILL.md), so the same skill works in every supported tool without modification.
Is the css-token-sweep skill free?
Yes. Every skill on skills-hub.ai is free and open-source. There are no premium tiers, paywalls, or usage limits. You only pay for whatever AI assistant you're already using.
How do I use css-token-sweep after installing it?
In Claude Code, type `/css-token-sweep` (or whatever slash command the skill registers) and the AI follows the skill's instructions immediately. You can also reference it by name in natural language, your AI loads the skill into context when relevant.
Can I share the css-token-sweep skill with my team?
Yes. Commit your project's .skills.json lockfile and teammates run `npx @skills-hub-ai/cli install` (no args) to install every skill at the exact version you pinned. Organization-scoped installs work via skills-hub.ai organizations.