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WebPerf Snippets

Measure Core Web Vitals and debug web performance with 56 snippets in a headless Chromium

JavaScript

★ 1,456 stars Last pushed 2026-10-31 License: MIT

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Review any command before running it. Package names and URLs come from the server's own registry entry.

Package (npm 1.9.0)

npx -y [email protected]

Or add to your MCP client config:

{
  "mcpServers": {
    "webperf-snippets": {
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ],
      "env": {
        "CRUX_API_KEY": "<YOUR_VALUE>"
      }
    }
  }
}

CRUX_API_KEY secret — Chrome UX Report API key for the field data of get_crux; the other tools work without it

This server takes extra arguments — see its repository.

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Data from the Official MCP Registry