Skill Claude CodeCodex
Apply React best practices - hooks patterns, state management, component composition, performance optimization, error boundaries, accessibility, and testing. Covers React 18+, Suspense, concurrent features, custom hooks, Context API, and TypeScript integration. Use when writing React components, reviewing React code…
Skill Claude CodeCodex
Create professional, comprehensive README.md files for software projects. Generates badges, installation instructions, usage examples, API references, and contributing guides tailored to the project type. Use when the user needs a README, wants to improve project documentation, or needs to write docs for a new repo.
Skill Claude CodeCodex
Write optimized SQL queries for complex data requirements. Handle multi-table joins, aggregations, window functions, CTEs, subqueries, and performance optimization. Use when the user needs to write a SQL query, optimize a slow query, understand a query plan, design a schema, or work with database data.
Skill Claude CodeCodex
Build Stripe payment integrations - one-time payments, subscriptions, marketplaces, and Connect platforms. Covers API selection (Checkout Sessions vs PaymentIntents vs Setup Intents), webhooks, restricted API keys, Stripe Connect (Accounts v2), billing, and security best practices. Use when accepting payments…
Skill Claude CodeCodex
Integrate Supabase into applications - PostgreSQL database queries, Row Level Security (RLS) policies, authentication (email/password, OAuth, magic link), real-time subscriptions, storage (file uploads), and Edge Functions. Covers the Supabase JavaScript/TypeScript SDK, Python client, type-safe queries with generated…
Skill Claude CodeCodex
Write and manage infrastructure as code with HashiCorp Terraform. Covers resource definitions, variables, outputs, modules, state management, workspaces, provider configuration (AWS, GCP, Azure, Cloudflare), remote backends (S3, Terraform Cloud), data sources, locals, lifecycle rules, and CI/CD integration. Use when…
Skill Claude CodeCodex
Write unit tests, integration tests, and end-to-end tests following best practices. Covers pytest, Jest, Go testing, and JUnit. Generates tests for functions, classes, REST endpoints, and database operations. Use when the user wants to write tests, increase test coverage, practice TDD, or add a test suite to existing…
Skill Claude CodeCodex
Apply advanced TypeScript patterns - strict type safety, utility types, generics, discriminated unions, branded types, conditional types, template literal types, and declaration merging. Covers tsconfig best practices, type-safe API design, narrowing, and eliminating any/unknown. Use when writing TypeScript, reviewing…
Skill Claude CodeCodex
Build interactive user interfaces with Vue.js - components, state management, templates, composition API, lifecycle hooks, and reactive data binding.
Skill Claude CodeCodex
Build complex, self-contained interactive web artifacts - rich HTML/CSS/JavaScript applications, React components with Tailwind CSS and shadcn/ui, data visualizations with D3.js or Chart.js, interactive tools, and games - all bundled into a single portable HTML file. Use when the user wants to create an interactive…
Skill Claude CodeCodex
Scrape and extract structured content from websites. Handle pagination, dynamic JavaScript-rendered pages, rate limiting, and anti-bot measures. Use when the user needs to extract data from a website, scrape product listings, collect article text, or automate web data collection.
Skill Claude CodeCodex
Create, edit, and analyze Excel spreadsheets (.xlsx, .xlsm, .csv, .tsv files). Covers building spreadsheets with openpyxl and pandas, writing Excel formulas, applying professional formatting and color conventions, creating charts, and validating formula correctness. Use when the user wants to create an Excel file…