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Unocss

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antfu
unocss

UnoCSS instant atomic CSS engine, superset of Tailwind CSS. Use when configuring UnoCSS, writing utility rules, shortcuts, or working with presets like Wind, Icons, Attributify.

Overview

Publisherantfu
Repositoryskills
Skill nameunocss
Stars
5.9K
Forks
333
Bundled files
24
LicenseMIT
Links
  • Markdown instructions

    A SKILL.md file the model loads on demand, so it only costs tokens when a request actually matches.

  • Works with any LLM

    AI skills are plain Markdown, not provider-specific code, so this works with GPT, Claude, Gemini, Grok, or a local model.

  • 24 bundled files

    Scripts, templates, and references the model can read while it works. Files are read-only and never executed.

  • Open source

    Published by antfu on GitHub. Read the source before you install it.

Installation

Install the Unocss AI skill in TypingMind to use it with any LLM, or drop it into another agent that reads SKILL.md.

1

Install in TypingMind

TypingMind installs a skill straight from its GitHub folder — it reads SKILL.md, bundles the resource files, and stores the result locally.

  1. Open the app and go to Plugins → Skills.
  2. Choose "Install from GitHub".
  3. Paste the skill folder URL below and confirm.
  4. Enable the skill in any chat where you want it available.
Plugins → Skills → Add skill → From GitHub URL, then paste the folder URL and press Continue.
2

Install in another agent

Any agent that reads the Agent Skills format can use this skill — copy the folder into that agent's skills directory.

Claude Code — .claude/skills
git clone --depth 1 https://github.com/antfu/skills.git /tmp/skills
mkdir -p .claude/skills
cp -r /tmp/skills/skills/unocss .claude/skills/unocss
Restart Claude Code after copying so it picks up the new skill.

Use it in TypingMind

Enable Unocss in any TypingMind chat and the model takes it from there. Its name and description sit in the system prompt, and the moment a request matches, the model loads the full instructions itself — you never invoke it by hand, and it costs no tokens until it is actually used.

The model loads Unocss on its own as soon as a request matches it.

Works with any AI model

AI skills are plain Markdown instructions rather than provider-specific code, so Unocss is not tied to the model it was written for. Install it once in TypingMind and use it with GPT-5, Claude, Gemini, Grok, DeepSeek, Mistral, Llama, or a local model you run yourself — all on your own API keys.

  • Loaded only when it is needed

    The system prompt carries just the name and description. The instructions are fetched on the first matching request, so an idle skill costs nothing.

  • Switch models mid-chat

    Because the skill is instructions rather than code, changing model does not break it — the next model reads the same SKILL.md.

Skill instructions

This is the SKILL.md content the model loads. Read it before installing — a skill is instructions your model will follow.

UnoCSS is an instant atomic CSS engine designed to be flexible and extensible. The core is un-opinionated - all CSS utilities are provided via presets. It's a superset of Tailwind CSS, so you can reuse your Tailwind knowledge for basic syntax usage.

Important: Before writing UnoCSS code, agents should check for uno.config.* or unocss.config.* files in the project root to understand what presets, rules, and shortcuts are available. If the project setup is unclear, avoid using attributify mode and other advanced features - stick to basic class usage.

The skill is based on UnoCSS 66.x, generated at 2026-01-28.

Core

TopicDescriptionReference
ConfigurationConfig file setup and all configuration optionscore-config
RulesStatic and dynamic rules for generating CSS utilitiescore-rules
ShortcutsCombine multiple rules into single shorthandscore-shortcuts
ThemeTheming system for colors, breakpoints, and design tokenscore-theme
VariantsApply variations like hover:, dark:, responsive to rulescore-variants
ExtractingHow UnoCSS extracts utilities from source codecore-extracting
Safelist & BlocklistForce include or exclude specific utilitiescore-safelist
Layers & PreflightsCSS layer ordering and raw CSS injectioncore-layers

Presets

Main Presets

TopicDescriptionReference
Preset Wind3Tailwind CSS v3 / Windi CSS compatible preset (most common)preset-wind3
Preset Wind4Tailwind CSS v4 compatible preset with modern CSS featurespreset-wind4
Preset MiniMinimal preset with essential utilities for custom buildspreset-mini

Feature Presets

TopicDescriptionReference
Preset IconsPure CSS icons using Iconify with any icon setpreset-icons
Preset AttributifyGroup utilities in HTML attributes instead of classpreset-attributify
Preset TypographyProse classes for typographic defaultspreset-typography
Preset Web FontsEasy Google Fonts and other web fonts integrationpreset-web-fonts
Preset TagifyUse utilities as HTML tag namespreset-tagify
Preset Rem to PxConvert rem units to px for utilitiespreset-rem-to-px

Transformers

TopicDescriptionReference
Variant GroupShorthand for grouping utilities with common prefixestransformer-variant-group
DirectivesCSS directives: @apply, @screen, theme(), icon()transformer-directives
Compile ClassCompile multiple classes into one hashed classtransformer-compile-class
Attributify JSXSupport valueless attributify in JSX/TSXtransformer-attributify-jsx

Integrations

TopicDescriptionReference
Vite IntegrationSetting up UnoCSS with Vite and framework-specific tipsintegrations-vite
Nuxt IntegrationUnoCSS module for Nuxt applicationsintegrations-nuxt

Bundled files

The model reads these on demand while the skill is loaded. They are exposed as readable files and are never executed.

Frequently asked questions

What does the Unocss AI skill do?

UnoCSS instant atomic CSS engine, superset of Tailwind CSS. Use when configuring UnoCSS, writing utility rules, shortcuts, or working with presets like Wind, Icons, Attributify.

Why use Unocss on TypingMind?

Because you install it once and use it with any model. Unocss is plain Markdown rather than provider-specific code, so the same skill runs on GPT-5, Claude, Gemini, Grok, or a local model — and you can switch model mid-chat without it breaking. TypingMind runs on your own API keys, so you pay providers directly instead of a per-seat subscription, and your skills and chats stay in your own storage.

How do I install Unocss in TypingMind?

Open Plugins → Skills → Install from GitHub in TypingMind and paste https://github.com/antfu/skills/tree/main/skills/unocss. TypingMind reads its SKILL.md and bundles its files and installs it as a skill you can enable per chat.

Which AI models can use Unocss?

Any model you connect in TypingMind. AI skills are plain Markdown instructions rather than provider-specific code, so GPT, Claude, Gemini, Grok, and local models can all load this skill when a request matches it.

How many AI models can I use with Unocss?

As many as you like. As long as a model supports skills, you can use Unocss with it — GPT, Claude, Gemini, Grok, DeepSeek, Mistral, Llama and more — all on TypingMind with your own API keys.

Is the Unocss AI skill free?

Yes. It is published on GitHub by antfu under the MIT license. You only pay your own AI provider for the tokens you use.

What are AI skills?

An AI skill is a reusable instruction bundle that teaches an AI model how to do one specific task. It follows the open Agent Skills format: a SKILL.md file with a name and description, plus any scripts, templates or reference files the model may need. The model reads the instructions only when your request matches the skill, so an installed skill costs nothing until it is used.

How are AI skills different from plugins or MCP servers?

A plugin or MCP server gives a model new tools to call — code that runs somewhere and returns a result. An AI skill gives the model knowledge and process instead: how to approach a task, which steps to follow, what good output looks like. Skills are plain Markdown, so they need no server, no API key and no runtime, and they work with any model.

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