Ultracite
| Introduction: | Ultracite is an AI-ready Biome preset that provides a lightning-fast, zero-config linting and formatting experience to help development teams and AI agents write and generate code faster and more consistently. |
| Recorded in: | 6/29/2025 |
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What is Ultracite?
Ultracite is a powerful, zero-configuration Biome preset engineered in Rust to deliver subsecond linting and formatting for codebases. It is specifically designed to ensure consistent code style and quality across human development teams and integrated AI models, thereby eliminating formatting debates and friction in code reviews. Ultracite enforces strict type safety and best practices by default, offering preconfigured rules optimized for modern web projects using Next.js, React, and TypeScript, while also providing robust support for monorepos through unified toolchain configuration.
How to use Ultracite
Users can get started with Ultracite by running the command "npx ultracite@latest init" in their project directory, which sets up the zero-config Biome preset. It integrates seamlessly with existing development workflows, including Husky pre-commit hooks and lint-staged, and supports all major package managers. Ultracite automatically reformats code and fixes lint issues on save, providing clear error reporting for issues that require manual attention. It works with popular IDEs like VS Code, Cursor, Windsurf, and Zed, and can also be used via an MCP server for linting without local installation or for consistent code quality in background jobs with AI agents. No explicit pricing or registration is mentioned, indicating it is a developer tool installed and used locally within a project.
Ultracite's core features
Subsecond linting and formatting built in Rust for instant code analysis
Seamless integration with existing development workflows, including Husky pre-commit hooks and lint-staged
Automatic code reformatting and lint issue fixing on save with clear error reporting
Maximum type safety enforcement by default, catching type errors and preventing unsafe code patterns
Designed for monorepos with unified toolchain configuration across all packages and apps
Highly opinionated, strict configuration to ensure consistent code and eliminate formatting debates
Zero-config setup with preconfigured rules optimized for Next.js, React, and TypeScript projects
Ensures consistent code style and quality across human team members and AI models
MCP (Managed Code Processing) server support for remote linting and AI agent integration
Compatibility with all major IDEs and AI agents (e.g., VS Code, Cursor, Windsurf, Zed, Claude, OpenAI)
Use cases of Ultracite
Accelerating code writing and generation for individual developers and teams.
Ensuring consistent code style and quality across large development teams.
Integrating AI code generation tools with a standardized formatting and linting pipeline.
Streamlining code review processes by eliminating manual formatting corrections.
Maintaining a unified toolchain configuration and code consistency in complex monorepos.
Preventing common type errors and unsafe code patterns in TypeScript projects.
Automating code quality checks and fixes on every save within an IDE.
Migrating from older, more complex linting/formatting setups like ESLint/Prettier.
Enabling AI agents to generate code that adheres to team-specific style guides.
Running code quality checks in CI/CD pipelines or background jobs without local setup.