Python Development

Comprehensive Python 3.13+ expertise system covering modern Python development, async programming, type hints, performance optimization, and cloud deployment. PROACTIVELY activate for: (1) ANY Python task, (2) Python 3.13+ features (free-threading, JIT), (3) asyncio and concurrent programming, (4) Type hints and mypy/pyright, (5) Package management (uv, pip, poetry), (6) Project structure (src layout, pyproject.toml), (7) FastAPI and web development, (8) Pydantic data validation, (9) Testing (pytest, coverage), (10) Cloudflare Workers/Containers Python, (11) GitHub Actions Python workflows, (12) Performance optimization and profiling, (13) Security best practices (OWASP), (14) Ruff linting and formatting. Provides: Python 3.13 free-threading and JIT, asyncio patterns, comprehensive type hints, uv package management, FastAPI production patterns, Pydantic vs dataclass guidance, pytest testing, Cloudflare Python optimization, GitHub Actions caching, memory profiling, security hardening.

Skills for designing and building MCP servers that work seamlessly with Claude. Guides you through deployment models (remote HTTP, MCPB, local), tool design patterns, auth, and interactive MCP apps.

Development kit for working with the Claude Agent SDK

Six Xcode build optimization skills in one plugin: benchmark, compilation analysis, project analysis, SPM build analysis, a recommend-first orchestrator, and a fixer for applying approved changes.

Comprehensive React 19 expertise system covering Server Components, Client Components, hooks, state management, patterns, and testing. PROACTIVELY activate for: (1) ANY React task, (2) React 19 Server/Client Components, (3) Server Actions with 'use server', (4) React hooks (useState, useEffect, useRef, useMemo, useCallback, useTransition, useDeferredValue, useActionState, useOptimistic, useFormStatus), (5) State management (Context, Zustand, Jotai, TanStack Query, SWR), (6) Component patterns (compound, render props, HOC, custom hooks), (7) TypeScript with React, (8) Form handling (React Hook Form, Zod), (9) Performance optimization (React.memo, code splitting, virtualization), (10) Testing with Vitest/Jest and React Testing Library. Provides: React 19 complete features, use() hook for promises, Server Components architecture, Client Component patterns, all hooks with TypeScript, state management solutions, component patterns, forms and validation, performance optimization techniques, comprehensive testing patterns.