Skill Claude CodeCodex
Best practices for authoring clean, maintainable, and portable GNU Make Makefiles. Use when the task involves creating or editing Makefiles, Makefile, makefile, .mk, GNUmakefile, GNU Make patterns, build automation, or makefile troubleshooting.
Skill Claude CodeCodex
Markdown accessibility review guidelines based on GitHub's 5 best practices for inclusive documentation. Use when the task involves review markdown accessibility, make docs accessible, a11y review, markdown a11y, or accessible documentation.
Skill Claude CodeCodex
Guides intentional Nothing-inspired UI and design-system work with typography, spacing, hierarchy, components, and platform-specific execution. Use when the user explicitly asks for Nothing style, Nothing design, or /nothing-design, not for generic UI or design tasks.
Skill Claude CodeCodex
Optimize web performance for faster loading and better user experience. Use when the task involves speed up my site, optimize performance, reduce load time, fix slow loading, improve page speed, or performance audit.
Skill Claude CodeCodex
Modern PHP 8.x+ best practices, patterns, and standards for building robust applications. Use when the task involves PHP project, composer.json, PHP development, Laravel, or Symfony.
Skill Claude CodeCodex
Manage pinned tags and commit SHAs for GitHub Actions security, resolving mutable tags to immutable commit references. Use when the task involves Unpinned tag for a non-immutable Action, pin GitHub Action to commit SHA, resolve git tag to SHA, or GitHub Actions security hardening.
Skill Claude CodeCodex
PostgreSQL database development patterns covering schema design, advanced queries, indexing strategies, performance tuning, migrations, and operational best practices. Use when the task involves PostgreSQL, Postgres, SQL optimization, database schema design, or pgdump.
Skill Claude CodeCodex
Use this skill when asked to create a pull request (PR). It ensures all PRs follow the repository's established templates and standards. Use when the task involves create a pull request, create PR, open a PR, pr creator, or pull request template.
Skill Claude CodeCodex
Prettier code formatting setup, configuration, editor integration, ESLint coordination, and pre-commit hook automation for consistent codebases. Use when the task involves Prettier, code formatting, .prettierrc, Prettier configuration, or auto-formatting.
Skill Claude CodeCodex
Python data validation using type hints and runtime type checking with Pydantic v2's Rust-powered core for high-performance validation in FastAPI, Django, and configuration management. Use when working with this technology or related database and validation workflows.
Skill Claude CodeCodex
Ruby on Rails best practices and conventions covering MVC patterns, ActiveRecord, RESTful routing, testing with RSpec, background jobs, and production-ready Rails development. Use when the task involves Ruby on Rails, Rails project, ActiveRecord, Rails migrations, or Rails API.
Skill Claude CodeCodex
Ruby best practices, patterns, and idioms for building elegant, maintainable applications. Use when the task involves Ruby project, Gemfile, Ruby on Rails, RSpec, or Ruby gems.
Skill Claude CodeCodex
Master Rust async programming with Tokio, async traits, error handling, and concurrent patterns. Use when the task involves async Rust, Tokio patterns, Rust concurrent programming, async traits, or Rust futures and streams.
Skill Claude CodeCodex
Optimize for search engine visibility and ranking. Use when the task involves improve SEO, optimize for search, fix meta tags, add structured data, sitemap optimization, or search engine optimization.
Skill Claude CodeCodex
Create or update Agent Skills that follow the official specification and repository guidance. Use when creating a new skill, refining an existing skill, or documenting reusable AI workflows and instructions.
Skill Claude CodeCodex
Solid.js reactive framework patterns for building high-performance web applications with fine-grained reactivity. Covers signals, effects, memos, stores, control flow components, routing, resources, and key differences from React. Use when the task involves Solid.js, solid-js, SolidStart, fine-grained reactivity, or…
Skill Claude CodeCodex
Master SQL query optimization, indexing strategies, and EXPLAIN analysis to dramatically improve database performance and eliminate slow queries. Use when the task involves slow SQL query, database optimization, EXPLAIN analysis, indexing strategy, or N+1 query problem.
Skill Claude CodeCodex
SQLAlchemy Python SQL toolkit and ORM with powerful query builder, relationship mapping, and database migrations via Alembic Use when working with this technology or related database and validation workflows.
Skill Claude CodeCodex
Swift and iOS development patterns covering language fundamentals, UIKit, SwiftUI, Combine, async/await, testing with XCTest, project structure, and dependency management with SPM. Use when the task involves Swift, iOS development, Xcode project, UIKit, or Swift programming.
Skill Claude CodeCodex
TensorFlow and Keras machine learning patterns for model building, training, data pipelines, evaluation, transfer learning, deployment, and GPU-accelerated deep learning. Use when the task involves TensorFlow, Keras, machine learning model, deep learning, or neural network training.
Skill Claude CodeCodex
Testing Library patterns for user-centric, accessibility-driven component testing. Covers query priority, user events, async utilities, and practical patterns for testing React, Vue, and DOM components the way users interact with them. Use when the task involves Testing Library, @testing-library/react, React component…
Skill Claude CodeCodex
End-to-end type-safe APIs for TypeScript with tRPC, React Query integration, Zod validation, and full-stack type inference without code generation. Use when the task involves tRPC router or procedure, type-safe API, tRPC with React Query, tRPC middleware, tRPC Next.js integration, or end-to-end TypeScript API.
Skill Claude CodeCodex
Comprehensive web quality audit covering performance, accessibility, SEO, and best practices. Use when the task involves audit my site, review web quality, run lighthouse audit, check page quality, optimize my website, or web quality audit.
Skill Claude CodeCodex
Toolkit for interacting with and testing local web applications using Playwright. Supports verifying frontend functionality, debugging UI behavior, capturing browser screenshots, and viewing browser logs. Use when the task involves test web application, test frontend, browser testing, Playwright test, capture browser…