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Unocss

Checked
antfu·vlatest·frontend·MIT

Unocss is a zero-config CSS-in-JS library that provides utility classes for rapid UI development and styling without external dependencies.

Repository

Install on your platform

Showing Claude Code. One command installs this skill into any of the agents below.

  1. 1

    Run this in your project

    terminal
    $ npx skills add antfu/skills --skill unocss -a claude-code

  2. Uses the open-source skills CLI and needs Node.js. Add -g to install it for your user instead of this project.

What we know about this skill

Publisher

antfu

Taken from the source listing. We haven't verified who controls this account.

Install target

Live repository

Not pinned. Installing fetches whatever the repository holds at the time you run the command.

No human has reviewed this code. The checks below are a static scan of the files at one commit — nobody has run this skill or judged whether it works. A skill runs with whatever access you give your agent, so read the source before you install it.

Automated safety checks

scanned

This skill passed all 6 checks. We read its files at one commit and looked for the things that make a skill dangerous to run — not for whether it works.

  • Declares what it does: passed

    SKILL.md parses and declares a name and a description.

    SKILL.md exists, its frontmatter parses, and it declares a name and a description.

  • No undeclared network calls: passed

    Makes no network calls.

    Every host the skill dials — from its scripts, its config endpoints or the commands it tells the agent to run — is either well-known package and API infrastructure or declared in its own frontmatter. Links in documentation are not counted.

  • No obfuscated payloads: passed

    No encoded or obfuscated payloads.

    No base64, hex or compressed blob is decoded and then executed, and no encoded shell commands.

  • No credential access: passed

    Reads no keys, tokens, keychains or credential files.

    Neither the code nor the SKILL.md instructions read SSH keys, cloud credentials, keychains, token stores, browser cookie databases or dotfiles that hold secrets.

  • No pipe-to-shell installers: passed

    No pipe-to-shell or download-and-run installers.

    No `curl … | sh` pattern, in the code or in the instructions, that runs code fetched at run time.

  • Pinned to a commit: passed

    Scanned antfu/skills at d02c48452d.

    The exact upstream commit SHA that was scanned is recorded, so the result refers to specific bytes.

Commit
d02c48452d
Manifest
skills/unocss/SKILL.md
Scanned
26 files, 3,339 lines
This is a static scan, not a review. It reads the skill's files; it does not run them, and it cannot tell you whether the skill is any good or whether the code does what its description says. A skill runs with whatever access you give your agent.
What each check looks for →

About this skill

What it does

The unocss skill enables developers to apply utility-first CSS classes directly in their HTML or JSX files, reducing the need for traditional CSS files. It allows for dynamic and scoped styling with minimal configuration, making it ideal for component-based frameworks like Vue, React, or Svelte.

When to use it

  • You want to write less CSS and style components directly in your markup.
  • You're working on a project that uses utility-first CSS principles.
  • You need fast, scalable styling without the overhead of managing large CSS files.
  • You are building a component library or reusable UI elements.

Key capabilities

  • Apply styles inline using class names.
  • Supports scoped and dynamic classes for components.
  • Integrates with modern front-end frameworks like Vue, React, and Svelte.
  • Reduces the need for global CSS files by using utility-first principles.

Example prompts

  • "Apply a red border to this button using UnoCSS."
  • "Style this card component with shadow and padding using inline classes."
  • "Generate a responsive grid layout using utility classes."

Tips & gotchas

  • Ensure your project is set up correctly for the framework you're using (e.g., Vue 3, React with Vite).
  • While UnoCSS reduces CSS complexity, it may not be suitable for highly complex or custom UI designs that require extensive styling.