Performance Expert

This is your go-to when you need to make a fullstack app faster. It covers the usual suspects: React component memoization, Next.js rendering strategies, NestJS API optimization, MongoDB query tuning, and AWS infrastructure tweaks. The skill includes specific metrics to hit (LCP under 2.5s, API p95 under 200ms) and concrete checklists for both frontend and backend work. What's useful here is the breadth. Instead of just focusing on bundle size or database indexes, it ties together the entire stack from Core Web Vitals down to Lambda cold starts. Good for when you're chasing performance issues across multiple layers and need a systematic approach rather than random optimizations.

Install to Claude Code

npx -y skills add shipshitdev/library --skill performance-expert --agent claude-code