Overview
unocss is an open-source frontend skill for Claude Code and compatible agents, published by antfu. Its author describes it as: “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.”. The project has 5.8k stars on GitHub and is available under the MIT license. Add it to your setup with `git clone https://github.com/antfu/skills ~/.claude/skills/unocss`.
What unocss does
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.
What’s inside
The SKILL.md for unocss is organised into these sections:
- Core
- Presets
- Main Presets
- Feature Presets
- Transformers
- Integrations
Installation
Add unocss to your agent with:
git clone https://github.com/antfu/skills ~/.claude/skills/unocssReview a skill’s source before installing it — skills can instruct your agent to run commands. This command comes from the skill’s public repository, which is the source of truth for setup steps. New to skills? Read how to install Claude Code skills.
Supported agents
Neither the skill nor its repository names a specific agent. It uses the SKILL.md format, which several agents can load — check the repository for any agent-specific requirements.
License
unocss is published under the MIT license.
Strengths
- Clear MIT license — safe to read and adapt within its terms
- Ships in antfu/skills, an established project with 5,770 GitHub stars
Author
Topics
Frequently asked questions
- What does unocss 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.
- How do I install unocss?
- Run git clone https://github.com/antfu/skills ~/.claude/skills/unocss in your agent, then reload your skills. Review the source at https://github.com/antfu/skills before installing.
- Is unocss free to use?
- Yes. unocss is free and open source under the MIT license, so you can read, run, and adapt it within that license's terms.
- Where does unocss come from?
- unocss ships inside antfu/skills, a repository that contains 19 catalogued skills in total. The repository's 5,770 GitHub stars apply to that whole collection, not to this skill on its own.