MCPInstall

cloudflare-web-perf

Audit Core Web Vitals and render-blocking resources. Official skill published by Cloudflare for diagnosing and fixing LCP, INP, CLS and Lighthouse performance issues, driven by Chrome DevTools performance traces.

Installs
174
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Install

Works with every agent the skills CLI supports.

npx skills add https://github.com/podo/design-agent-skills --skill cloudflare-web-perf
  1. 01

    Install

    Run the command in your project. The CLI asks which agents to install for.

  2. 02

    Describe the task

    Ask your agent for something this skill covers. It loads cloudflare-web-perf automatically when relevant.

  3. 03

    Review the result

    The agent follows the SKILL.md steps, scripts and references bundled with the skill.

SKILL.md

The instructions your agent reads when the skill is triggered.

cloudflare-web-perf

Catalogue stub — full skill: cloudflare/skills

<!-- das:install:start — generated from stub.yaml by `npm run generate`; edit stub.yaml, not this block -->

Decision tree

  1. Is the full skill already installed? Upstream names this skill web-perf, so it installs next to this pointer (the pointer is not replaced).

    • Global: f=~/.agents/skills/web-perf/SKILL.md; [ -f "$f" ] && ! grep -q "^das:" "$f" && echo "installed" || echo "pointer"
    • Project: f=.agents/skills/web-perf/SKILL.md; [ -f "$f" ] && ! grep -q "^das:" "$f" && echo "installed" || echo "pointer"
    • installed → the skill is installed as web-perf, invoke it and proceed
    • pointer → go to step 2
  2. Detect scope, then install:

    [ -e ~/.agents/skills/cloudflare-web-perf ] && echo "global" || echo "project"
    

    Global:

    npx skills add cloudflare/skills --skill web-perf -g -y
    

    Project:

    npx skills add cloudflare/skills --skill web-perf -y
    

    Claude Code: send a command as a chat message starting with ! to run it without leaving the conversation.

Heads-up

  • Requires: Chrome DevTools MCP server (chrome-devtools-mcp) for performance traces; without it the skill falls back to source and network analysis and says which measurements it could not collect
  • License: Apache-2.0
<!-- das:install:end -->

Invoke after install

  • Skill name: web-perf
  • Trigger phrases: "web performance", "Core Web Vitals", "LCP", "CLS", "render blocking"

What it does

Cloudflare's official skill for auditing and diagnosing website loading and interaction performance: Core Web Vitals (LCP, INP, CLS), Lighthouse performance scores and render-blocking resources. It tells the agent to retrieve current thresholds from web.dev and Chrome documentation rather than rely on memory, to use Chrome DevTools MCP traces when available, and to quantify the impact of each recommendation. The guidance is generic; it is not specific to Cloudflare products.

When NOT to use

  • Accessibility audits (ARIA, keyboard, contrast) — use fixing-accessibility or wcag-audit-patterns
  • React or Next.js render performance specifically — use vercel-skills

FAQ

What does the cloudflare-web-perf skill do?

Audit Core Web Vitals and render-blocking resources. Official skill published by Cloudflare for diagnosing and fixing LCP, INP, CLS and Lighthouse performance issues, driven by Chrome DevTools performance traces.

How do I install cloudflare-web-perf?

Run npx skills add https://github.com/podo/design-agent-skills --skill cloudflare-web-perf in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/cloudflare-web-perf/ (personal) or .claude/skills/cloudflare-web-perf/ (project).

Which AI agents can use cloudflare-web-perf?

Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.

Is cloudflare-web-perf safe to install?

No partner security audit is available yet. Skills can run commands and scripts, so read the SKILL.md and any bundled files before installing.

Who maintains cloudflare-web-perf?

It is published by podo in podo/design-agent-skills. It has 174 recorded installs.

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