Web Artifacts Builder
anthropics/skills
Builds multi-component claude.ai HTML artifacts as a small React, TypeScript and Tailwind project, then bundles it into one shareable HTML file.
UnoCSS instant atomic CSS engine, superset of Tailwind CSS. An agent skill from JetBrains/skills.
Install Unocss
$ npx skills add JetBrains/skills --skill unocss -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install JetBrains/skills unocss --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/JetBrains/skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/unocss .claude/skills/unocss && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "unocss" agent skill from https://github.com/JetBrains/skills/tree/main/unocss into .claude/skills/unocss/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "unocss", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/JetBrains/skills/tree/main/unocssType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add JetBrains/skills --skill unocss -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install JetBrains/skills unocss --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/JetBrains/skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/unocss .agents/skills/unocss && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "unocss" agent skill from https://github.com/JetBrains/skills/tree/main/unocss into .agents/skills/unocss/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "unocss", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add JetBrains/skills --skill unocss -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install JetBrains/skills unocss --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/JetBrains/skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/unocss .cursor/skills/unocss && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "unocss" agent skill from https://github.com/JetBrains/skills/tree/main/unocss into .cursor/skills/unocss/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "unocss", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/JetBrains/skills.git --path unocss--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add JetBrains/skills --skill unocss -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install JetBrains/skills unocss --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/JetBrains/skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/unocss .gemini/skills/unocss && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "unocss" agent skill from https://github.com/JetBrains/skills/tree/main/unocss into .gemini/skills/unocss/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "unocss", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install JetBrains/skills unocssInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add JetBrains/skills --skill unocss -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/JetBrains/skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/unocss .github/skills/unocss && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "unocss" agent skill from https://github.com/JetBrains/skills/tree/main/unocss into .github/skills/unocss/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "unocss", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add JetBrains/skills --skill unocss -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install JetBrains/skills unocss --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/JetBrains/skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/unocss .opencode/skills/unocss && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "unocss" agent skill from https://github.com/JetBrains/skills/tree/main/unocss into .opencode/skills/unocss/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "unocss", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
unocss- GitHub stars
- 366
- Used in
- 9 other repos
- Token cost
- ~1.1k tokens
- SKILL.md length
- 348 words
- Files
- 25 (incl. references)
- Skills in repo
- 76
- Repo updated
- First seen
- Licence
- None found
At a glance
UnoCSS instant atomic CSS engine, superset of Tailwind CSS. An agent skill from JetBrains/skills.
- Configuring UnoCSS
- SKILL.md covers Core, Presets, Transformers and Integrations
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
- Writing utility rules
What it does
Unocss is an agent skill from JetBrains/skills, published by the product's own GitHub organization. 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.
Its SKILL.md is about 1.1k tokens, which your agent loads only when the skill is triggered. The skill folder holds 25 other files, including reference files (for example `GENERATION.md`, `references/core-config.md` and `references/core-extracting.md`).
It sits in Frontend & Design. It works with Tailwind CSS. The repository describes itself as: Curated agent skills collection verified by JetBrains.
When your agent uses it
- Configuring UnoCSS
- Writing utility rules
- Working with presets like Wind
Example prompts
- “/unocss”
What it can do on your machine
Read from SKILL.md and the folder at commit e0f258b. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Unocss loads about 1.1k tokens when it runs, and up to ~16k if it reads all its reference files. Until then it costs about 46 tokens; SKILL.md has 348 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
Without a licence we can't republish the file, so here is its outline and opening line. It has 348 words (~1,064 tokens).
“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…”
- name
- unocss
- metadata.short-description
- Build with UnoCSS utilities and presets
- metadata.author
- Anthony Fu
- metadata.version
- 2026.1.28
- metadata.source
- https://github.com/antfu/skills/tree/main/skills/unocss
Files
SKILL.md and 24 other files (references) in unocss of JetBrains/skills.
- SKILL.md
- GENERATION.md
- references/core-config.md
- references/core-extracting.md
- references/core-layers.md
- references/core-rules.md
- references/core-safelist.md
- references/core-shortcuts.md
- references/core-theme.md
- references/core-variants.md
- references/integrations-nuxt.md
- references/integrations-vite.md
- references/preset-attributify.md
- references/preset-icons.md
- references/preset-mini.md
- references/preset-rem-to-px.md
- references/preset-tagify.md
- references/preset-typography.md
- references/preset-web-fonts.md
- references/preset-wind3.md
- … and 5 more
Open the folder on GitHubat commit e0f258b
Used in 9 other repositories
We found 11 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 9 other GitHub owners. This page covers the copy in JetBrains/skills, which our catalogue first saw on October 7, 2026.
- WeakAuras/WeakAuras-Companion.agents/skills/unocss
- oyjt/uniapp-vue3-template.trae/skills/unocss.agents/skills/unocss+1 more
- pdsuwwz/chatgpt-vue3-light-mvp.pi/skills/unocss
- moeru-ai/airi.agents/skills/unocss
- uni-helper/skillsskills/unocss
- aiskillstore/marketplaceskills/antfu/unocss
- NeverSight/learn-skills.devdata/skills-md/0froq/skills/unocss
- antfu/skillsskills/unocss
- LeoYeAI/openclaw-master-skillsskills/unocss
Compare with similar skills
Unocss next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Unocss this skillJetBrains/skills | 366 | 9 repos | ~1.1k | Automated safety check: Pass | None | |
| Web Artifacts Builderanthropics/skills | 180k | 41 repos | ~769 | Automated safety check: Pass | Apache-2.0 | |
| Tailwindcss Developmentanonaddy/anonaddy | 4.9k | 10 repos | ~865 | Automated safety check: Pass | MIT | |
| UI StylingOhh-889/skyroc | 795 | 13 repos | ~2.5k | Automated safety check: Pass | MIT | |
| MCP Developmentcoollabsio/coolify | 63k | 1 repos | ~949 | Automated safety check: Pass | MIT | |
| Accessibility Reviewmarkmead/hyperui | 12k | 1 repos | ~1.1k | Automated safety check: Pass | MIT |
Similar skills
- Official
Tailwindcss Development
anonaddy/anonaddy
Always invoke when the user's message includes 'tailwind' in any form.
UI Styling
Ohh-889/skyroc
Create beautiful, accessible user interfaces with shadcn/ui components (built on Radix UI + Tailwind), Tailwind CSS utility-first styling, and canvas-based visual designs.
MCP Development
coollabsio/coolify
A skill your agent uses for Laravel MCP development. An agent skill from coollabsio/coolify.
Accessibility Review
markmead/hyperui
Run a WCAG 2.1 AA accessibility audit on a design or page. An agent skill from markmead/hyperui.
Design System
Ohh-889/skyroc
Token architecture, component specifications, and slide generation.
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Related
Works with
Categories
Questions about Unocss
What does Unocss do?
UnoCSS instant atomic CSS engine, superset of Tailwind CSS. An agent skill from JetBrains/skills. Unocss is an agent skill from JetBrains/skills, published by the product's own GitHub organization. UnoCSS instant atomic CSS engine, superset of Tailwind CSS.
When should I use Unocss?
Unocss fits situations like: configuring UnoCSS; writing utility rules; working with presets like Wind.
How do I install Unocss in Claude Code?
Run `npx skills add JetBrains/skills --skill unocss -a claude-code`. Or copy the skill folder (unocss in JetBrains/skills) into .claude/skills/unocss in your project. Claude Code loads it when a task matches its description.
How do I install Unocss in Codex?
Run `npx skills add JetBrains/skills --skill unocss -a codex`. Or copy the skill folder (unocss in JetBrains/skills) into .agents/skills/unocss in your project. Codex loads it when a task matches its description.
Can I use Unocss in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add JetBrains/skills --skill unocss -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/unocss, .gemini/skills/unocss, .github/skills/unocss and .opencode/skills/unocss in your project.
What does Unocss need to run?
SKILL.md names no scripts, command-line tools or credentials: Unocss is instructions for the agent only.
Does Unocss access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Unocss safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Unocss use?
No licence was found for Unocss or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Unocss use?
About 1.1k tokens (SKILL.md is roughly 4.3k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 15k tokens, read only when the agent opens those files.
What are the alternatives to Unocss?
Skills that share tags, products or a category with Unocss: Web Artifacts Builder (anthropics/skills, 180k stars), Tailwindcss Development (anonaddy/anonaddy, 4.9k stars), UI Styling (Ohh-889/skyroc, 795 stars) and MCP Development (coollabsio/coolify, 63k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Unocss?
JetBrains (a GitHub organization, an official publisher) maintains it in JetBrains/skills, which has 366 GitHub stars. The repository holds 76 skills in this directory. The repository was last updated on June 29, 2026.
Source: JetBrains/skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.