Skill Claude CodeCodex
Juniors-focused React and TypeScript best practices. Use this skill when writing or reviewing code to enforce clear, consistent, and maintainable patterns across common scopes like React, TypeScript, styling, devtools, assets, and Git.
Skill Claude CodeCodex
React and Next.js performance optimization guidelines from Vercel Engineering. This skill should be used when writing, reviewing, or refactoring React/Next.js code to ensure optimal performance patterns. Triggers on tasks involving React components, Next.js pages, data fetching, bundle optimization, or performance…
Skill Claude CodeCodex
React hooks best practices for React application code and custom hook design across DX, optimization, and logic. Use when writing components with hooks, creating or refactoring custom hooks, reviewing hook usage/APIs/internals, checking effects/dependencies/state/refs/callbacks, or improving hook correctness…
Skill Claude CodeCodex
Practical playbook for React teams to choose and apply reactuse hooks across state, async flows, browser APIs, and UI interactions. Use it when replacing custom hook logic with production-ready patterns that stay compatible with SSR and Next.js.
Skill Claude CodeCodex
Review UI code for Web Interface Guidelines compliance. Use when asked to "review my UI", "check accessibility", "audit design", "review UX", or "check my site against best practices".
Skill Claude CodeCodex
Support QA and testing work across formats: planning checks, writing test cases, reviewing coverage, designing Playwright browser and component integration tests, creating locators, and keeping automated tests focused on observable product behavior.
Skill Codex
Use when planning which unit-test coverage an implementation needs before writing or updating its tests.
Skill Codex
Use when planning which product test cases a page, feature, or reusable block needs before updating the test catalog.
Skill Codex
Use when planning integration coverage for a product flow and choosing whether each scenario belongs in a browser or component test.
At most 3 mods per repository are shown here, and a mod shipped inside a plugin is left to that plugin's page — the rest are on their repository pages: