react-doctor

React Doctor is a command-line tool that scans any React codebase and returns a 0-100 health score with categorized diagnostics. Run npx react-doctor@latest from your project root and get a prioritized list of issues across five surfaces: state management, performance, architecture, security, and accessibility. It detects your framework automatically — Next.js, Vite, and React Native are all supported — and adjusts its rule set accordingly.

Beyond analysis, the install command writes best-practice rules directly into the config files read by AI coding agents like Claude Code, Cursor, and Codex, so the agent stops generating violating patterns before they are committed.