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Performance Optimization

Performance Optimization is an agent skill (a SKILL.md file) from addyosmani/agent-skills. Optimizes application performance across frontend, backend, queries, and databases. It works with Claude Code, Codex, Cursor, Gemini CLI, GitHub Copilot and OpenCode and has 102,166 GitHub stars across a repository of 13 listed skills.

github.com/addyosmani/agent-skills/skills/performance-optimization (opens in a new tab)

View on GitHub (opens in a new tab)View on skills.sh (opens in a new tab)

Add this skill

Claude

This repository is a Claude Code plugin marketplace. In Claude Code:

/plugin marketplace add addyosmani/agent-skills
/plugin install agent-skills@addy-agent-skills

In the Claude apps, zip the performance-optimization folder and upload it under Customize > Skills > + > Upload a skill (code execution must be on).

ChatGPT / Codex

Codex reads skills from .agents/skills/ in a repo or ~/.agents/skills/ for every project:

git clone --depth 1 https://github.com/addyosmani/agent-skills.git
cp -r agent-skills/skills/performance-optimization .agents/skills/performance-optimization   # repo; ~/.agents/skills for all projects

Standalone skills also load in the ChatGPT desktop app.

Cursor

Cursor loads skills from .cursor/skills/ (or ~/.cursor/skills/) and also reads .claude/skills/:

git clone --depth 1 https://github.com/addyosmani/agent-skills.git
cp -r agent-skills/skills/performance-optimization .cursor/skills/performance-optimization   # project; ~/.cursor/skills for all projects

Source (checked Oct 7, 2026): code.claude.com/docs/en/skills (opens in a new tab), code.claude.com/docs/en/plugin-marketplaces (opens in a new tab), support.claude.com/en/articles/12512180-using-skills-in-claude (opens in a new tab), learn.chatgpt.com/docs/build-skills (opens in a new tab), cursor.com/docs/context/skills (opens in a new tab)

What this skill 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. Measure before optimizing. Performance work without measurement is guessing — and guessing leads to premature optimization that adds complexity without improving what matters.

When it triggers

  • 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.

More skills in addyosmani/agent-skills

13 skills are listed from this repository.

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FAQ

Performance Optimization FAQ

Still curious? Email info@appsgit.com.

What is the Performance Optimization skill?

Performance Optimization is an agent skill (a SKILL.md file) from addyosmani/agent-skills. Optimizes application performance across frontend, backend, queries, and databases. It works with Claude Code, Codex, Cursor, Gemini CLI, GitHub Copilot and OpenCode and has 102,166 GitHub stars across a repository of 13 listed skills. Its SKILL.md lives at github.com/addyosmani/agent-skills/skills/performance-optimization.

How do I install the Performance Optimization skill?

In Claude Code, run /plugin marketplace add addyosmani/agent-skills and then /plugin install agent-skills@addy-agent-skills. For Codex or Cursor, copy the performance-optimization folder into .agents/skills/ or .cursor/skills/.

Is the Performance Optimization skill free?

Yes. The repository is open source under the MIT license.

Is Performance Optimization maintained?

The repository's most recent commit was on Oct 3, 2026. Its latest release is 0.6.12. appsgit only lists skills from repositories with a commit in the last six months.