Ultracite is a zero-config preset that keeps agent-written code consistent and type-safe. It wraps Oxlint and Oxfmt, or Biome, or ESLint with Prettier and Stylelint, with framework presets for React, Next.js, Vue, Svelte, Astro and more. One npx init gives a JavaScript or TypeScript project strict, consistent linting and formatting with no config files to write.
Ultracite
The zero-config linter and formatter preset for agentic development
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Perfect for
Teams where coding agents write much of the code and style drift shows up fast, plus any JS or TS project that wants strict linting without a week of config bikeshedding.
Solves these problems
AI agents generate code fast but inconsistently, and hand-tuning ESLint configs eats days. Ultracite applies one strict preset across the stack so agent output lands in a consistent shape from the start.
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