Skill Claude CodeCodex
Tests web applications with Playwright including E2E tests, locators, assertions, and visual testing. Use when writing end-to-end tests, testing across browsers, automating user flows, or debugging test failures.
Skill Claude CodeCodex
Works with PostgreSQL including queries, migrations, indexes, and performance tuning. Use when designing database schemas, writing SQL queries, optimizing performance, or managing PostgreSQL databases.
Skill Claude CodeCodex
Implements product analytics with PostHog including event tracking, feature flags, and session replay. Use when adding analytics, A/B testing, or user behavior tracking to React and Next.js applications.
Skill Claude CodeCodex
Builds fast, lightweight React-compatible applications with Preact's 3KB library and optional Signals for fine-grained reactivity. Use when optimizing bundle size, migrating from React, or when user mentions Preact, preact/compat, or lightweight React alternative.
Skill Claude CodeCodex
Provides type-safe database access with Prisma ORM including schema definition, migrations, queries, and relations. Use when setting up database connections, defining data models, writing queries, or managing database migrations.
Skill Claude CodeCodex
Analyzes codebases to map architecture, dependencies, complexity metrics, and data flows for rapid onboarding. Use when exploring new repos, understanding project layout, analyzing dependencies, measuring code complexity, or preparing codebase documentation.
Skill Claude CodeCodex
Implements real-time features with Pusher Channels for WebSocket-based pub/sub messaging. Use when adding live updates, notifications, chat, presence indicators, or collaborative features.
Skill Claude CodeCodex
Builds instant-loading web applications with Qwik's resumable architecture and fine-grained lazy loading. Use when creating highly performant sites, when user mentions Qwik, resumability, zero hydration, or O(1) startup time.
Skill Claude CodeCodex
Builds accessible components with Radix UI primitives including dialogs, dropdowns, tooltips, and form controls. Use when building accessible interfaces, creating headless components, or implementing complex UI patterns.
Skill Claude CodeCodex
Deploys applications on Railway with zero-config detection, databases, and automatic CI/CD. Use when deploying Node.js apps, setting up databases, or needing simple PaaS deployment.
Skill Claude CodeCodex
Creates email templates with React components using React Email. Use when building transactional emails, newsletters, or notification emails with responsive layouts and dark mode support.
Skill Claude CodeCodex
Builds performant forms with React Hook Form including validation, error handling, and schema integration. Use when creating forms, validating inputs, integrating with Zod, or handling complex form state.
Skill Claude CodeCodex
Builds user interfaces with React using components, hooks, state management, and modern patterns. Use when creating React components, managing state, handling side effects, optimizing performance, or integrating with frameworks.
Skill Claude CodeCodex
Uses Redis for caching, sessions, pub/sub, and data structures with Node.js. Use when implementing caching, session storage, real-time messaging, or high-performance data storage.
Skill Claude CodeCodex
Manages global state with Redux Toolkit's createSlice, createAsyncThunk, and RTK Query for data fetching and caching. Use when building large-scale applications, implementing predictable state management, or when user mentions Redux, RTK, or Redux Toolkit.
Skill Claude CodeCodex
Identifies code smells, applies design patterns, guides migrations, and performs security/performance/accessibility refactoring. Use when improving code quality, modernizing codebases, applying design patterns, migrating to TypeScript, or extracting microservices.
Skill Claude CodeCodex
Builds full-stack React applications with Remix using loaders, actions, nested routes, and progressive enhancement. Use when creating Remix projects, implementing data loading, form handling, error boundaries, or deploying to various platforms.
Skill Claude CodeCodex
Deploys web applications on Render with automatic builds, managed databases, and zero-config SSL. Use when deploying web services, static sites, or setting up managed infrastructure.
Skill Claude CodeCodex
Runs open-source ML models via Replicate API for image generation, LLMs, and audio. Use when calling Stable Diffusion, Llama, Whisper, or other models without infrastructure management.
Skill Claude CodeCodex
Sends transactional emails with Resend including React Email templates, API integration, and Next.js setup. Use when sending emails, creating email templates, or integrating transactional email in applications.
Skill Claude CodeCodex
Designs RESTful APIs following industry best practices for resource naming, HTTP methods, status codes, and error handling. Use when designing new APIs, refactoring existing endpoints, or establishing API standards.
Skill Claude CodeCodex
Fixes code organization issues including high complexity, large files, deep nesting, and barrel file problems. Use when functions are too complex, files too long, or directory structure is problematic.
Skill Claude CodeCodex
Fixes documentation issues including missing JSDoc, module-level comments, and @returns tags. Use when functions lack documentation or JSDoc is incomplete.
Skill Claude CodeCodex
Provides the complete code review scoring rubric with 10 weighted categories, severity multipliers, and deduction calculations. Use when performing quantified code reviews, calculating quality scores, or creating improvement roadmaps.
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: