`pagespeed_field_metrics`

Pack: pagespeed-insights · Endpoint: https://gateway.pipeworx.io/pagespeed-insights/mcp

No MCP client? Call it directly: GET https://gateway.pipeworx.io/v1/tools/pagespeed_field_metrics for the schema, then POST the same URL with its arguments for the data.

Real-user Core Web Vitals for a page AND for its whole origin in one call, from Google’s Chrome UX Report as PageSpeed Insights serves it — 75th-percentile Largest Contentful Paint, Interaction to Next Paint, Cumulative Layout Shift and Time to First Byte, with the good/needs-improvement/poor split behind each and Google’s own pass/fail verdict. AUTHORITATIVE for whether a page passes Core Web Vitals, and it says plainly when a low-traffic page has no data of its own and Google substituted the origin’s — a substitution that otherwise reads as page data and misattributes the whole site’s performance to one URL.

Parameters

Name	Type	Required	Description
`url`	string	yes	Full page URL, including the scheme, e.g. https://www.example.com/pricing.
`strategy`	string	no	Device class for the field data: mobile (the default) or desktop.

Example call

Arguments

{
  "url": "https://www.wikipedia.org"
}

curl

curl -X POST https://gateway.pipeworx.io/pagespeed-insights/mcp \
  -H 'Content-Type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"pagespeed_field_metrics","arguments":{"url":"https://www.wikipedia.org"}}}'

TypeScript (@pipeworx/sdk)

import { Pipeworx } from '@pipeworx/sdk';
const pipeworx = new Pipeworx();

const result = await pipeworx.call('pagespeed_field_metrics', {
  "url": "https://www.wikipedia.org"
});

More examples

{
  "url": "https://www.shopify.com/pricing",
  "strategy": "desktop"
}

Connect

Add this to your MCP client config, or use one-click install buttons:

{
  "mcpServers": {
    "pagespeed-insights": {
      "url": "https://gateway.pipeworx.io/pagespeed-insights/mcp"
    }
  }
}

See Getting Started for client-specific install steps.

pagespeed_field_metrics