PerformanceApache-2.0

Web performance

by Cloudflare (opens in a new tab) cloudflare/skills

Audits Core Web Vitals from a real performance trace, then maps fixes to your code.

Installation

Skills CLI

Skills CLI command
npx skills@latest add cloudflare/skills --skill web-perf

Requires Node.js and npm. Choose your agents in the installer; add -g for a global installation.

Fieldbook review

Reviewed 27 Sept 2026

Checks that the browser MCP tools are available before it starts, which saves a confusing failure.

  • LicenceApache-2.0
  • FrontmatterValid name and description
  • Risky patternsNone found
  • Size202 lines
  • Last checked27 Sept 2026 · 79c531e95ca4d96a7de920c28c127c2c09ec55cd452a92222267d2954580be23

What it can touch

  • Browser

    Drives a real browser.

  • Needs MCP

    Requires an MCP server to be configured.

Read the source

Fieldbook links to the original instead of copying it, so you always read the version you install.

skills/web-perf/SKILL.md on GitHub (opens in a new tab)