ultracite: A highly opinionated, zero-configuration linter and formatter

by haydenbleasel · MCP Server · ★ 3.4k

Last updated: · Indexed by AgentSkillsHub · Auto-synced every 8h

How to install ultracite

npx ultracite init

Taken from the project's README on GitHub. Check the security audit before running it.

Security audit verdict: SAFE · quality 63/100

None of the 42 rules matched — no credential harvesting, no data exfiltration, no curl-pipe-shell installer. Scanned against 42 published rules built on the SlowMist agent-security taxonomy, refreshed every 8 hours. Full audit →

The quality score combines nine heuristic checks of the repo and its README: completeness, clarity, specificity, examples, structure, agent readiness, step-by-step content, instruction quality and security notes. It rates how well the project explains itself to an agent, not the code.

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Quick Facts

Stars3,367
Forks128
LanguageTypeScript
CategoryMCP Server
LicenseMIT
Quality Score63/100
Open Issues4
Last Updated2026-11-01
Created2022-03-18
Platformsmcp, node, vscode
Est. Tokens~14k

About ultracite

Ultracite A production-grade, zero-configuration preset for ESLint, Biome, and Oxlint. Ultracite is designed to help you and your AI models write consistent and type-safe code without the hassle of configuration. Choose your preferred toolchain and get started in seconds. Quick Start The interactive setup will guide you through selecting your formatter/linter, framework, editor, and AI agents.

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How this security grade is produced

Grades come from a rule-based scan built on the SlowMist agent-security taxonomy: 42 published rules, covering credential harvesting, data exfiltration, curl | sh installers and more. It is a first-layer scan, not a manual audit — we say so rather than overstate it.

The scale of the problem is documented independently: Liu et al. (2026), in a study of 31,132 agent skills, report that 26.1% contain security vulnerabilities. Our own full-catalog census is published as a citable open dataset.

Sources & who's responsible:

View on GitHub → Browse MCP Server tools