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Web Perf

Web Perf is an agent skill (a SKILL.md file) from cloudflare/skills. Audit, diagnose, or optimize website loading and interaction performance, Core Web Vitals, and Lighthouse performance scores. It works with Claude Code, Codex, Cursor, GitHub Copilot and OpenCode and has 2,998 GitHub stars across a repository of 10 listed skills.

github.com/cloudflare/skills/skills/web-perf (opens in a new tab)

  • Official
  • Multi-skill repo
  • Plugin marketplace
  • Security
  • Actively maintained
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 cloudflare/skills
/plugin install cloudflare@cloudflare

In the Claude apps, zip the web-perf 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/cloudflare/skills.git
cp -r skills/skills/web-perf .agents/skills/web-perf   # 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/cloudflare/skills.git
cp -r skills/skills/web-perf .cursor/skills/web-perf   # 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

Audit, diagnose, or optimize website loading and interaction performance, Core Web Vitals, and Lighthouse performance scores. Your knowledge of web performance metrics, thresholds, and tooling APIs may be outdated. Prefer retrieval over pre-training when citing specific numbers or recommendations.

More skills in cloudflare/skills

10 skills are listed from this repository.

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More security skills

All Security

FAQ

Web Perf FAQ

Still curious? Email info@appsgit.com.

What is the Web Perf skill?

Web Perf is an agent skill (a SKILL.md file) from cloudflare/skills. Audit, diagnose, or optimize website loading and interaction performance, Core Web Vitals, and Lighthouse performance scores. It works with Claude Code, Codex, Cursor, GitHub Copilot and OpenCode and has 2,998 GitHub stars across a repository of 10 listed skills. Its SKILL.md lives at github.com/cloudflare/skills/skills/web-perf.

How do I install the Web Perf skill?

In Claude Code, run /plugin marketplace add cloudflare/skills and then /plugin install cloudflare@cloudflare. For Codex or Cursor, copy the web-perf folder into .agents/skills/ or .cursor/skills/.

Is the Web Perf skill free?

Yes. The repository is open source under the Apache-2.0 license.

Is Web Perf maintained?

The repository's most recent commit was on Oct 1, 2026. appsgit only lists skills from repositories with a commit in the last six months.