Development

TanStack Query v5 patterns and common pitfalls. Use when implementing data fetching, cache invalidation, or debugging stale data issues. Triggers on: useQuery, useMutation, queryKey, invalidate, TanStack, React Query.

Security patterns for session keys, caching, logging, and environment variables. Use when implementing authentication, caching sensitive data, or setting up logging. Triggers on: session key, private key, cache, logging, secrets, environment variable.

React component patterns, forms, accessibility, and responsive design. Use when building React components, handling forms, or ensuring accessibility. Triggers on: React component, useEffect, form validation, a11y, responsive, Error Boundary.

Express API conventions and storage patterns. Use when building REST APIs, defining routes, or implementing storage interfaces. Triggers on: Express, router, API route, status code, storage interface.

Searches and recommends Claude Code skills and plugins from local database and SkillsMP API. Activates when user asks to find skills, search plugins, get recommendations for PDF/Git/code-review/frontend tools, or requests feature-based tool discovery.

Manages expansion of tokens, pools, chains, networks, and DEXes across the codebase. Use when adding new tokens, protocols, chains, networks, or updating existing DeFi registry data. Triggers on add token, new coin, add protocol, new DEX, add chain, new network, add RPC, update address.

Expert knowledge for DeFi/MEV bot development including critical pitfalls, backtesting realities, AMM mechanics, MEV extraction strategies, and production failure modes

Orchestrates pitfall prevention skills for common development issues. Auto-triggered during code review to check for TanStack Query, Drizzle ORM, Express API, React, WebSocket, blockchain RPC, and security pitfalls.

Use when reviewing code changes, auditing new features, cleaning up PRs, or user says "find dead code", "find unused code", "check for unnecessary additions", "what can I remove".

Finds similar implementations, usage examples, and existing patterns in the codebase - shows concrete code examples for modeling new work. Pattern librarian documenting what exists without judgment.

MUST use this skill when user asks to create PR, open pull request, submit for review, or mentions "PR 생성/만들기". This skill OVERRIDES default PR creation behavior. Analyzes commits, validates task completion, generates Conventional Commits title and description, suggests labels.

Build and manage React Native/Expo mobile apps including project setup, development workflows, and platform-specific guidance. Use when working on mobile app development, configuration, or running apps.

Set up project infrastructure including TypeScript, database, state management, navigation, and testing. Use when initializing new features or configuring development environment.

Write and run tests for React Native apps using Jest and React Native Testing Library. Use when creating tests, debugging failures, or setting up test infrastructure.

Debug React Native apps including metro bundler issues, native errors, performance problems, and crash analysis. Use when troubleshooting errors or investigating issues.

Locate development tasks and TODO comments across the codebase

React Native coding patterns, best practices, and common solutions for mobile development. Use when implementing features or refactoring code.

Find function, struct, or variable definitions using ctags indexes

Discover and install skills from multiple marketplaces for AI coding agents

Generic MCP (Model Context Protocol) server development patterns. Provides reusable architecture and best practices for building MCP servers that expose any domain-specific operations as tools for AI agents. Framework-agnostic implementation supporting async operations, error handling, and enterprise-grade features.

コードベースからリファクタリング候補を検出し、優先度付きでGitHub Issueを作成します

Modern API development patterns for building high-performance, scalable web services. Expert in async/await patterns, REST/GraphQL APIs, middleware, error handling, rate limiting, OpenAPI documentation, testing, and production optimizations. Framework-agnostic patterns that work with Python, Node.js, Go, and other languages.

Direct access to GitHub Copilot MCP server tools for AI-powered development assistance

Use when deploying Next.js applications to Vercel. Triggers for: vercel.json configuration, build optimization, environment variable setup, custom domain configuration, API proxy setup, or deployment troubleshooting. NOT for: backend-only deployments, non-Vercel hosting, or local development setup.