Review code written by Claude Code or humans across multiple languages. Use when asked to review, audit, critique, or analyze code quality. Supports R, Python, JavaScript, SQL, C++, Rust, Go, Ansible, Kustomize/Kubernetes, Dockerfiles, Docker Compose, and Bash. Covers correctness, security, performance, testing, documentation, and architecture. Produces actionable output for Claude Code to fix issues plus human-readable REVIEW.md summaries.
Expert-level CSS development with modern features and best practices. Use when asked to (1) write or debug CSS, (2) implement layouts with flexbox, grid, or container queries, (3) create animations and transitions, (4) optimize CSS performance, (5) work with CSS preprocessors or CSS-in-JS, (6) implement responsive design, or when phrases like "style", "CSS", "stylesheet", "design", "layout", "animation" appear.
Write semantic, accessible, performant HTML with modern best practices. Use when asked to (1) create HTML pages or documents, (2) write semantic markup, (3) improve accessibility, (4) optimize HTML structure and performance, (5) implement forms, tables, or complex layouts, or when phrases like "HTML page", "web page", "markup", "semantic HTML", "accessibility" appear.
Expert-level Ember.js development. Use when asked to (1) write Ember.js applications with components, services, routes, or controllers, (2) implement Ember Data models and adapters, (3) work with Ember Octane patterns (Glimmer components, tracked properties, modifiers), (4) optimize Ember application performance, (5) write Ember tests with QUnit or testing-library, or when phrases like "Ember component", "Ember route", "Glimmer", "tracked property", "Ember addon" appear.
Expert-level JavaScript and React development. Use when asked to (1) write JavaScript code requiring advanced patterns like closures, proxies, generators, or async iterators, (2) build React applications with hooks, context, suspense, or server components, (3) optimize JavaScript/React performance, (4) implement complex state management, (5) write TypeScript with advanced type patterns, or when phrases like "React component", "JavaScript function", "TypeScript", "hooks", "state management", "frontend", "web app" appear.
Write comprehensive unit tests for code. Use when asked to (1) write tests for new or existing code, (2) add unit tests, (3) test a function/module/class, (4) verify code still works after changes, (5) create test coverage, or when phrases like "write tests", "add tests", "test this", "make sure this works" appear. Supports Python, JavaScript, R, Rust, Go, C++, SQL, Bash, Ansible, Kubernetes/Kustomize, Docker, and Docker Compose.