performance-optimization
An agent skill by addyosmani, from addyosmani/agent-skills. Tags: api, debugging, developer-tools, web.
What it does
Optimizes application performance across frontend, backend, queries, and databases. Use when performance requirements exist, when you suspect performance regressions, when Core Web Vitals or load times need improvement, when N+1 query patterns need fixing, or when profiling reveals bottlenecks.
Install
With the skills CLI, which installs into Claude Code, Codex, Cursor and other agents:
npx skills add addyosmani/agent-skills --skill performance-optimizationOr copy the skill folder into Claude Code's skills directory by hand (~/.claude/skills for every project, or .claude/skills inside one):
git clone --depth 1 https://github.com/addyosmani/agent-skills
cp -r agent-skills/skills/performance-optimization ~/.claude/skills/performance-optimizationSafety box score
Not rated yet. A safety box score grades what a skill and its scripts can reach on the machine of whoever installs it, across eight categories from shell execution to secrets access. Anyone can request one from this page; it is saved for everyone. How the score works.
Source
- Repository
- addyosmani/agent-skills (all skills from this repository)
- Path
- skills/performance-optimization/SKILL.md
- Branch
- main
- Updated
- 2026-09-19
Related skills
- debugging-and-error-recovery — Guides systematic root-cause debugging.
- observability-and-instrumentation — Instruments code so production behavior is visible and diagnosable. Use when adding logging, metrics, tracing, or alerting.
- security-and-hardening — Hardens code against vulnerabilities.
- systematic-debugging — Use when encountering any bug, test failure, or unexpected behavior, before proposing fixes
- browser-testing-with-devtools — Tests in real browsers via Chrome DevTools MCP. Use when building or debugging anything that runs in a browser.
- deprecation-and-migration — Manages deprecation and migration. Use when removing old systems, APIs, or features. Use when migrating users from one implementation to another.