Skill Claude CodeCodex
Audit and improve web accessibility following WCAG 2.1 guidelines. Use when the task involves improve accessibility, a11y audit, WCAG compliance, screen reader support, keyboard navigation, or make accessible.
Skill Claude CodeCodex
Apply modern web development best practices for security, compatibility, and code quality. Use when the task involves apply best practices, security audit, modernize code, code quality review, or check for vulnerabilities.
Skill Claude CodeCodex
You MUST use this before any creative work - creating features, building components, adding functionality, or modifying behavior. Explores user intent, requirements and design before implementation. Use when the task involves brainstorming, brainstorm ideas, explore design, before creative work, or turn ideas into…
Skill Claude CodeCodex
Optimize Core Web Vitals (LCP, INP, CLS) for better page experience and search ranking. Use when the task involves improve Core Web Vitals, fix LCP, reduce CLS, optimize INP, page experience optimization, or fix layout shifts.
Skill Claude CodeCodex
Cypress end-to-end testing patterns for reliable browser-based testing, covering selectors, custom commands, API mocking with cy.intercept, CI configuration, and best practices for deterministic, maintainable E2E test suites. Use when the task involves Cypress, E2E testing, cypress.config, end-to-end testing, or…
Skill Claude CodeCodex
Type-safe SQL ORM for TypeScript with zero runtime overhead Use when working with this technology or related database and validation workflows.
Skill Claude CodeCodex
Elixir and OTP best practices, patterns, and idioms for building concurrent, fault-tolerant applications. Use when the task involves Elixir project, mix.exs, Phoenix framework, GenServer, or OTP patterns.
Skill Claude CodeCodex
ESLint configuration expert for flat config setup, custom rules, TypeScript integration, plugin management, and migration from legacy .eslintrc to modern eslint.config.js. Use when the task involves ESLint, eslint.config, linting JavaScript, TypeScript linting, or ESLint rules.
Skill Claude CodeCodex
Express.js server-side development patterns for building robust REST APIs with proper middleware chains, error handling, request validation, security hardening, and scalable project structure. Use when the task involves Express.js, Express server, Express middleware, Node.js REST API, or Express routing.
Skill Claude CodeCodex
Create distinctive, production-grade frontend interfaces with high design quality that avoids generic AI aesthetics. Use when the task involves build web components, create frontend interface, build web page, build web application, frontend design, create UI component, or design web interface.
Skill Claude CodeCodex
Comprehensive guide for building robust, secure, and efficient CI/CD pipelines using GitHub Actions. Use when the task involves creating or editing GitHub Actions workflows, .github/workflows/.yml, CI/CD pipelines, GitHub Actions best practices, or workflow optimization.
Skill Claude CodeCodex
Go (Golang) best practices, patterns, and idioms for building reliable, performant applications. Use when the task involves Go project, Golang, go.mod, goroutines, or Go error handling.
Skill Claude CodeCodex
Create and manage production Grafana dashboards for real-time visualization of system and application metrics. Use when the task involves building monitoring dashboards, visualizing metrics, creating operational observability interfaces, Grafana dashboard, or Prometheus visualization.
Skill Claude CodeCodex
Build high-performance gRPC services with Protocol Buffers, streaming patterns, and microservice communication in Node.js and polyglot environments. Use when the task involves gRPC server or client, Protocol Buffers, protobuf service definition, gRPC streaming, microservice communication, or inter-service APIs.
Skill Claude CodeCodex
Helm chart development and management for Kubernetes: chart structure, template functions, values and overrides, dependencies, hooks, testing, and packaging best practices. Use when the task involves Helm, Helm chart, Chart.yaml, Helm template, or Kubernetes package management.
Skill Claude CodeCodex
Jest testing framework patterns for JavaScript and TypeScript projects, covering test structure, mocking strategies, async testing, snapshot testing, React component testing with Testing Library, and practical test organization. Use when the task involves Jest, JavaScript testing, React testing, jest.config, or unit…
Skill Claude CodeCodex
Kubernetes container orchestration patterns for production workloads: Pod specs, Deployments, Services, ConfigMaps, Secrets, Ingress, resource management, health probes, autoscaling, and essential kubectl workflows. Use when the task involves Kubernetes, k8s, kubectl, kustomization.yaml, or container orchestration.
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.
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: