#7474th of 324 in Skills, plugins and prompts
ultracite
Lint and format CLI that configures Biome, ESLint or Oxlint plus AI agent rules
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- Stars
- 3.4k
- License
- MIT
- Last commit
- Oct 2026
- Last release
- Oct 2026
- Language
- TypeScript
2,726 on 3 Apr 20263,368 on 30 Oct 2026
From GitHub's daily star counts.
Checked on GitHub.
Overview
Ultracite is a CLI that sets up a JavaScript/TypeScript linter and formatter (Biome, ESLint with Prettier and Stylelint, or Oxlint with Oxfmt) with preconfigured rules. `ultracite init` also writes rule and context files for AI agents such as Claude Code, Copilot, Cursor and Gemini, and `fix` can hand unfixable issues to the Claude Code or Codex CLI.
Who it is for: JS/TS developers who want one lint setup shared by humans and AI agents
Strengths
- One `npx ultracite init` configures linter, formatter, editor settings and agent rule files
- Supports three toolchains: Biome, ESLint/Prettier/Stylelint, and Oxlint/Oxfmt
- Non-interactive init flags for CI, plus per-workspace framework settings for monorepos
- `doctor` command diagnoses setup problems, including linter version mismatches
Weaknesses
- Targets JavaScript and TypeScript only
- Pins linter versions it supports; `upgrade` reinstalls the toolchain at those versions
- Agent-assisted fixing requires the separate Claude Code or Codex CLI
- README gives no rule counts or benchmark figures behind the speed claims
What it needs
- no GPU
- Needs Node.js, Biome, ESLint or Oxlint, Claude Code or Codex CLI (optional)
- Models: Claude Code, Codex, GitHub Copilot, Cursor, Gemini
Quick answers
Is ultracite open source?
Yes. Its code is on GitHub under the MIT license.
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