Is the UnoCSS skill free?

Yes. The skill itself is free from antfu/skills. SkillProof publishes the install command and an independent test verdict at no cost.

What is the UnoCSS SkillProof Score?

8.8/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 7/10, docs & honesty 5/5.

How do I install UnoCSS?

Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.

Can I use UnoCSS with Cursor, Copilot, Gemini CLI, Codex or other AI tools?

The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.

UnoCSS

UnoCSS 66.x reference: config, rules, shortcuts, presets (Wind3/4, Icons, Attributify) and transformers.

by antfu · antfu/skills

Tested · Works

Install — copy the command Download source ↗

Test report

Verdict: Tested · Works
Score: 8.8/10
Tested: Jul 14, 2026
Environment: Claude Code 2.x (agent harness)
Upstream re-checked: Aug 10, 2026 · d87365f

Config-and-preset reference for UnoCSS 66.x: asked for a uno.config.ts mixing presetWind3, presetIcons, and a regex-based dynamic shortcut, and the skill's documented array-form shortcut syntax is exactly right where a memory-only answer defaulted to an object literal that can't hold a regex matcher, and to the legacy presetUno name instead of the current presetWind3.

Scored on four weighted criteria — install, triggering, output vs. baseline, docs. How scoring works

Installs cleanly 5/5
Triggers reliably 5/5
Output vs. baseline 7/10
Docs & honesty 5/5

What UnoCSS does

A generated reference pack for UnoCSS, the atomic CSS engine that's a superset of Tailwind syntax. It routes to 23 topic files covering config, dynamic rules, shortcuts, theming, and every major preset/transformer, and triggers when a user is configuring UnoCSS, writing utility rules or shortcuts, or wiring up presets like Wind, Icons, or Attributify.

How to install UnoCSS

git clone https://github.com/antfu/skills
cd skills
mkdir -p ~/.claude/skills
cp -r skills/unocss ~/.claude/skills/unocss

Skills live in ~/.claude/skills/ (global) or .claude/skills/ (per-project). Restart Claude Code after installing.

Commands — how to trigger UnoCSS

/unocss UnoCSS 66.x reference: config, rules, shortcuts, presets (Wind3/4, Icons, Attributify) and transformers.

It also activates on plain-language prompts like these:

Set up a uno.config.ts with Wind3 and icon presets
Add a btn-primary shortcut and dark-mode icon swap in UnoCSS
Configure UnoCSS attributify mode for my Vite app

Frequently asked questions

Is the UnoCSS skill free?: Yes. The skill itself is free from antfu/skills. SkillProof publishes the install command and an independent test verdict at no cost.
Does UnoCSS work with Claude Code?: We tested it with Claude Code 2.x (agent harness) on Jul 14, 2026. Verdict: Tested · Works. Config-and-preset reference for UnoCSS 66.x: asked for a uno.config.ts mixing presetWind3, presetIcons, and a regex-based dynamic shortcut, and the skill's documented array-form shortcut syntax is exactly right where a memory-only answer defaulted to an object literal that can't hold a regex matcher, and to the legacy presetUno name instead of the current presetWind3.
What is the UnoCSS SkillProof Score?: 8.8/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 7/10, docs & honesty 5/5.
How do I install UnoCSS?: Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.
Can I use UnoCSS with Cursor, Copilot, Gemini CLI, Codex or other AI tools?: The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.