Provides Flutter and Dart development workflows using dart-mcp tools. Triggers when working with .dart files, pubspec.yaml, or when user mentions Flutter, widget, Riverpod, Freezed, or Dart development. MUST BE USED for Flutter project work involving dart_analyzer, dart_run_tests, hot_reload, or IDE MCP tools.
Guide you through Trail of Bits' 5-step secure development workflow. Runs Slither scans, checks special features (upgradeability/ERC conformance/token integration), generates visual security diagrams, helps document security properties for fuzzing/verification, and reviews manual security areas. (project, gitignored)
Stimulus and Turbo patterns for Rails frontend development. Automatically invoked when working with Hotwire, Stimulus controllers, Turbo frames/streams, progressive enhancement, or modern Rails JavaScript. Triggers on "Stimulus", "Turbo", "Hotwire", "turbo_frame", "turbo_stream", "Stimulus controller", "data-controller", "data-action", "progressive enhancement", "SPA-like".
Comprehensive E2E + Security Tests for Vercel Preview Deployments. Combines Playwright automation with Claude-in-Chrome MCP for interactive debugging. Activate on PR creation, before merge, or manual /preview-test.
React and Next.js performance optimization guidelines from Vercel Engineering. Use when writing, reviewing, or refactoring React/Next.js code. Triggers on tasks involving React components, Next.js pages, data fetching, bundle optimization, or performance improvements.
PHP language specialist for framework-specific patterns, modern PHP features, and PHP best practices. Scope: Laravel patterns, Symfony patterns, Bespoke PHP patterns, modern PHP features, deprecated API replacements, array syntax updates, common PHP mistakes. Triggers: "PHP", "Laravel", "Symfony", "Eloquent", "Blade", "Twig", "composer", "artisan", "type hints", "modern PHP", "PHP 8".
Build, convert, and optimize React/Vue/Svelte UI components with TypeScript, advanced patterns, animations, and accessibility. Updated for React 19, Next.js 16, and modern 2025 standards.
Expert TypeScript/JavaScript development guidance. Use when planning or writing TypeScript/JavaScript code, setting up TS/JS projects, configuring build tools (pnpm, Vite, TypeScript), implementing tests (Vitest), adding logging (pino for services, chalk/console for CLIs), working with React/Tailwind/Xstate, or following FP patterns. Covers stack decisions, tooling setup, testing strategies, and logging patterns for both services and CLI tools.
Optimize functions by generating and analyzing compiler assembly output. Use when asked to optimize a function, analyze generated assembly, or improve performance by examining what the compiler produces.
Angular performance optimization, change detection strategies, and bundle optimization
React performance optimization guidelines focused on Tanstack Start applications. Use when writing, reviewing, or refactoring React code with Tanstack Start, Tanstack Query, and Tanstack Router. Triggers on React components, data fetching, bundle optimization, performance improvements, code review, or refactoring tasks.
Full-stack performance analysis, optimization patterns, monitoring strategies, React 19 concurrent features, and bundle analysis for 2025+ development
React and Next.js performance optimization guidelines. This skill should be used when writing, reviewing, or refactoring React/Next.js code to ensure optimal performance patterns. Triggers on tasks involving React components, Next.js pages, data fetching, bundle optimization, or performance improvements.
Audit and improve SwiftUI runtime performance from code review and architecture. Use for requests to diagnose slow rendering, janky scrolling, high CPU/memory usage, excessive view updates, or layout thrash in SwiftUI apps, and to provide guidance for user-run Instruments profiling when code review alone is insufficient.
Orchestrates benchmark execution comparing PopKit vs baseline Claude Code
Test generation expertise for Python (pytest) and TypeScript (Jest). Use when writing new tests, improving coverage, or creating test fixtures. Ensures comprehensive coverage including edge cases, error scenarios, and integration tests.
Ruthless code review for Python, Kubernetes, and AWS. Hunts for downstream problems, security issues, and unnecessary complexity. Triggers on "review", "check", "audit", "what could go wrong".
Production-grade performance testing skill with k6, JMeter, load testing, stress testing, and performance optimization guidance
Deep code review with web research. USE WHEN user says 'double check against latest', 'verify versions', 'check security'. Complements automatic quality hook with ecosystem verification.
Analyze codebase for cleanup opportunities and generate actionable reports. Use when asked to review code health, find technical debt, audit the codebase, identify cleanup tasks, or when the user mentions "cleanup", "code health", "tech debt", "audit", or "what needs fixing".
Research-backed code review skill with OWASP Top 10 security checks, SAST tool integration (SonarQube, CodeQL, Snyk), performance pattern detection, and automated quality standards enforcement. Auto-invoked for code review, security audit, PR analysis, and bug checking. Implements 2025 best practices with 92% faster vulnerability remediation.
Ruthless code review for Python, Kubernetes, and AWS. Hunts for downstream problems, security issues, and unnecessary complexity. Use on 'review', 'check', 'audit', 'what could go wrong'.
Testing patterns with Bun test runner, coverage thresholds, mocking, and CI/CD integration. Use when writing tests, organizing test files, or setting up quality gates.
