Performance
Performance profiling and optimization
inertia-rails-best-practices
by cole-robertson
Comprehensive best practices for Inertia Rails development. Use when writing, reviewing, or refactoring Inertia.js Rails applications with React, Vue, or Svelte frontends. Covers server-side setup, props management, forms, navigation, performance, security, and testing patterns.
zig-memory
by zigcc
This skill provides Zig memory management guidance. It ensures proper use of defer/errdefer patterns, allocators, and leak detection. Essential for writing Zig code with dynamic allocation, fixing memory leaks, implementing resource cleanup, and working with allocators.
r3f-postprocessing
by EnzeD
React Three Fiber post-processing - @react-three/postprocessing, bloom, DOF, screen effects. Use when adding visual effects, color grading, blur, glow, or creating custom screen-space shaders.
r3f-animation
by EnzeD
React Three Fiber animation - useFrame, useAnimations, spring physics, keyframes. Use when animating objects, playing GLTF animations, creating procedural motion, or implementing physics-based movement.
clarification_expert
by multiversx
Expert at identifying underspecified requirements and asking high-value clarifying questions.
harness-writing
by runkids
Techniques for writing effective fuzzing harnesses across languages. Use when creating new fuzz targets or improving existing harness code.
address-sanitizer
by runkids
AddressSanitizer detects memory errors during fuzzing. Use when fuzzing C/C++ code to find buffer overflows and use-after-free bugs.
postgresql-rails-analyzer
by el-feo
Comprehensive PostgreSQL configuration and usage analysis for Rails applications. Use when Claude Code needs to analyze a Rails codebase for database performance issues, optimization opportunities, or best practice violations. Detects N+1 queries, missing indexes, suboptimal database configurations, anti-patterns, and provides actionable recommendations. Ideal for performance audits, optimization tasks, or when users ask to "analyze the database", "check for N+1 queries", "optimize PostgreSQL", "review database performance", or "suggest database improvements".
interpreting-culture-index
by runkids
Interprets Culture Index (CI) surveys, behavioral profiles, and personality assessment data. Supports individual profile interpretation, team composition analysis (gas/brake/glue), burnout detection, profile comparison, hiring profiles, manager coaching, interview transcript analysis for trait prediction, candidate debrief, onboarding planning, and conflict mediation. Accepts extracted JSON or PDF input via OpenCV extraction script.
multiversx-vault-pattern
by multiversx
In-memory token ledger pattern for tracking intermediate balances during multi-step operations within a single transaction. Use when building any contract that processes sequential token operations — aggregators, batch processors, atomic swaps, or multi-step DeFi flows.
ask-questions-if-underspecified
by runkids
Clarify requirements before implementing. Use when serious doubts arise.
r3f-interaction
by EnzeD
React Three Fiber interaction - pointer events, controls, gestures, selection. Use when handling user input, implementing click detection, adding camera controls, or creating interactive 3D experiences.
ordercli
by malue-ai
Foodora-only CLI for checking past orders and active order status (Deliveroo WIP).
bird
by malue-ai
X/Twitter CLI for reading, searching, posting, and engagement via cookies.
design
by neurofoo
Design Thinking process—Empathize, Define, Ideate, Prototype, Test. Use for product design, solving ambiguous problems, or when you don't know what users really need.
aar
by neurofoo
After-Action Review—structured debrief asking what was expected, what happened, why the difference, and what next. Use after projects, launches, presentations, or any significant event.
code-reviewer
by maxvaega
Review code for best practices, potential bugs, security vulnerabilities, and performance issues
vercel-react-best-practices
by julianromli
React and Next.js performance optimization guidelines from Vercel Engineering. 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.
browser
by julianromli
Minimal Chrome DevTools Protocol tools for browser automation and scraping. Use when you need to start Chrome, navigate pages, execute JavaScript, take screenshots, or interactively pick DOM elements.
backend-dev
by julianromli
Comprehensive backend development workflow that orchestrates expert analysis, architecture design, implementation, and deployment using the integrated toolset. Handles everything from API design and database architecture to security implementation and DevOps automation.
prospect-research
by Salesably
Creates comprehensive prospect profiles and knowledge capsules for sales preparation. Use this skill when researching new prospects, preparing for calls, onboarding to new accounts, or updating prospect intelligence.
laravel-performance-select-columns
by noartem
Select only required columns to reduce memory and transfer costs; apply to base queries and relations
gpui-entities
by cnwzhu
Entity and context patterns for state management in GPUI. Use when managing component state, implementing entity lifecycle, handling subscriptions, or avoiding common entity access pitfalls.
planning-approach-selection
by OzeroHAX
Implementation approach selection: compare options and justify the decision