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Ultracite

Ultracite is an agent skill (a SKILL.md file) from haydenbleasel/ultracite. Ultracite is a zero-config linting and formatting preset for JavaScript/TypeScript projects. It works with Claude Code and Cursor and has 3,352 GitHub stars. Install it by copying the skill folder into your agent's skills directory.

github.com/haydenbleasel/ultracite/skills/ultracite (opens in a new tab)

Data as of from the GitHub API and skills.sh; description from the skill's SKILL.md. Report an error

View on GitHub (opens in a new tab)View on skills.sh (opens in a new tab)

Add this skill

Claude

Claude Code loads skills from ~/.claude/skills/ (all projects) or .claude/skills/ (one project):

git clone --depth 1 https://github.com/haydenbleasel/ultracite.git
cp -r ultracite/skills/ultracite ~/.claude/skills/ultracite   # personal, or .claude/skills in a project

In the Claude apps, zip the ultracite folder and upload it under Customize > Skills > + > Upload a skill (code execution must be on).

ChatGPT / Codex

Codex reads skills from .agents/skills/ in a repo or ~/.agents/skills/ for every project:

git clone --depth 1 https://github.com/haydenbleasel/ultracite.git
cp -r ultracite/skills/ultracite .agents/skills/ultracite   # repo; ~/.agents/skills for all projects

Standalone skills also load in the ChatGPT desktop app.

Cursor

Cursor loads skills from .cursor/skills/ (or ~/.cursor/skills/) and also reads .claude/skills/:

git clone --depth 1 https://github.com/haydenbleasel/ultracite.git
cp -r ultracite/skills/ultracite .cursor/skills/ultracite   # project; ~/.cursor/skills for all projects

Source (checked Oct 7, 2026): code.claude.com/docs/en/skills (opens in a new tab), support.claude.com/en/articles/12512180-using-skills-in-claude (opens in a new tab), learn.chatgpt.com/docs/build-skills (opens in a new tab), cursor.com/docs/context/skills (opens in a new tab)

What this skill does

Ultracite is a zero-config linting and formatting preset for JavaScript/TypeScript projects. Use when: (1) Setting up or initializing Ultracite in a project, or migrating its existing lint and format config onto Ultracite (ultracite init), (2) Running linting or formatting commands (check, fix, doctor), (3) Writing or reviewing JS/TS code in a project that uses Ultracite — to follow its code standards, (4) Troubleshooting linting/formatting issues, (5) Upgrading Ultracite or bringing its…

When it triggers

  • Use when: (1) Setting up or initializing Ultracite in a project, or migrating its existing lint and format config onto Ultracite (ultracite init), (2) Running linting or formatting commands (check, fix, doctor), (3) Writing or reviewing JS/

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FAQ

Ultracite FAQ

Still curious? Email info@appsgit.com.

How do I install the Ultracite skill?

Copy the ultracite folder (the one containing SKILL.md) into ~/.claude/skills/ for Claude Code, .agents/skills/ for Codex or .cursor/skills/ for Cursor. The agent picks it up automatically when a task matches its description.

Is the Ultracite skill free?

Yes. The repository is open source under the MIT license.

Is Ultracite maintained?

The repository's most recent commit was on Oct 26, 2026. Its latest release is ultracite@8.1.0. appsgit only lists skills from repositories with a commit in the last six months.