ultracite

SKILL.md

Ultracite

Zero-config linting and formatting for JS/TS projects. Supports three linter backends: Biome (recommended), ESLint + Prettier + Stylelint, and Oxlint + Oxfmt.

Detecting Ultracite

Check if ultracite is in package.json dependencies or devDependencies. Detect the active linter by looking for (searching upward from the current directory):

biome.json / biome.jsonc → Biome

eslint.config.* (.mjs, .js, .cjs, .ts, .mts, .cts) → ESLint (with Prettier for formatting)

oxlint.config.ts → Oxlint (with oxfmt.config.ts for formatting)

CLI Commands

# Check for issues (read-only)
bunx ultracite check