Guides creation of production-ready web interfaces with distinctive typography, creative layouts, and thoughtful animations

Extremely fast Python linter written in Rust. Replaces black + flake8 + isort

Python dependency management and packaging. pyproject.toml based

Fast, disk space efficient Node.js package manager

Extremely fast Python package manager written in Rust. Replaces pip

Vercel's high-performance build system for JS/TS monorepos

Runs 69 specific checks across React and Next.js codebases to catch performance issues and optimization problems

UI audit tool that checks code against Web Interface Guidelines for accessibility and design consistency

Next.js App Router expert guidance: routing, Server Components, caching, and data fetching strategies

shadcn/ui expert guidance: CLI, component installation, custom registries, theming, and Tailwind CSS integration

Turbopack expert guidance: bundler configuration, HMR optimization, and build issue debugging

Google's large-scale multi-language build system with reproducible builds

Monorepo build system with task caching and dependency graph

Static type checker for Python. Validates type hints

Microsoft's fast static type checker for Python. Pylance engine

Install and run Python applications in isolated environments

Modern Python project manager. Envs, build, and publish unified

16 design engineering principles for polished interfaces: icon animations, hit areas, typography, border radius

Meta's fast multi-language build system. Alternative to Bazel

Add systematic debugging, TDD, plan-based development, and code review workflows to Claude Code