# Ultracite (agent skill)

> 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.

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…

## Key facts

| Fact | Value |
|---|---|
| Repository | https://github.com/haydenbleasel/ultracite |
| Skill path | skills/ultracite/SKILL.md |
| Skill name | ultracite |
| GitHub stars | 3,352 |
| Installs on skills.sh | 485 |
| License | MIT |
| Skills in repo | 1 |
| Plugin marketplace | no |
| Official | no |
| Works with | Claude Code, Cursor |
| Category | Testing & QA |
| Last commit | Oct 26, 2026 |

## 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/

## Add this skill

### Claude Code

```sh
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 skill folder and upload it under Customize > Skills > + > Upload a skill (code execution must be on).

### ChatGPT / Codex

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

### Cursor

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

Sources (checked 2026-10-07): https://code.claude.com/docs/en/skills, https://support.claude.com/en/articles/12512180-using-skills-in-claude, https://learn.chatgpt.com/docs/build-skills, https://cursor.com/docs/context/skills

skills.sh listing: https://www.skills.sh/haydenbleasel/ultracite/ultracite

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