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 3,173 GitHub stars across a repository of 10 listed skills.
github.com/cloudflare/skills/skills/web-perf (opens in a new tab)
Data as of from the GitHub API and skills.sh; description from the skill's SKILL.md. Report an error
- Official
- Multi-skill repo
- Plugin marketplace
- Security
- Maintained
Add this skill
Claude
This repository is a Claude Code plugin marketplace. In Claude Code:
/plugin marketplace add cloudflare/skills
/plugin install cloudflare@cloudflareIn 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 projectsStandalone 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 projectsSource (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 Your knowledge of web performance metrics, thresholds, and tooling APIs may be outdated.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.
Similar skills
More security skills
Loop Library
Forward-Future/loopy
Compatibility alias for Loopy. Use only when an existing installation or older instruction explicitly invokes loop-library; use Loopy for new installations and requests.
Maintained · last commit Jul 7, 2026
SecurityJavaScriptPerformance
addyosmani/web-quality-skills
Optimize web performance for faster loading and better user experience.
Maintained · last commit Aug 24, 2026
SecurityShellOrchestrator Container Spawn
samugit83/redamon
Spawning and hardening scan containers from the recon orchestrator: the security flags that look correct and break the container, and the sibling bind-mount path handling.
Active · last commit Oct 22, 2026
SecurityPythonJ Space
Tiger3807861189/J-Space-Cognition-Suite
Operate a selective workspace for complex reasoning, long tasks, repository engineering, coordinated agents, and authorized security analysis.
Active · last commit Sep 14, 2026
SecurityPythonComet Review
rpamis/comet
Manually review the implementation diff for the current Comet change.
Active · last commit Oct 22, 2026
SecurityJavaScriptCtf Pwn
ljagiello/ctf-skills
Provides binary exploitation techniques for CTF challenges.
Maintained · last commit Oct 26, 2026
SecurityPython
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 15, 2026. appsgit only lists skills from repositories with a commit in the last six months.