`crux_history`

Pack: chrome-ux-report · Endpoint: https://gateway.pipeworx.io/chrome-ux-report/mcp

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

How a site’s or page’s real-user Core Web Vitals have moved over roughly the last 40 weeks, from Google’s Chrome UX Report history API. Returns a weekly series of 75th-percentile LCP, INP and CLS with each collection period’s dates. AUTHORITATIVE for “did the performance work actually help” and for spotting the week a regression landed — each point is a 28-day trailing window, so consecutive points overlap and a step change in the series marks a real shift in visitor experience.

Parameters

Name	Type	Required	Description
`origin`	string	no	Site origin with scheme and no path, e.g. https://www.shopify.com. Give this OR url.
`url`	string	no	Full page URL. Give this OR origin.

Example call

Arguments

{
  "origin": "https://www.shopify.com"
}

curl

curl -X POST https://gateway.pipeworx.io/chrome-ux-report/mcp \
  -H 'Content-Type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"crux_history","arguments":{"origin":"https://www.shopify.com"}}}'

TypeScript (@pipeworx/sdk)

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

const result = await pipeworx.call('crux_history', {
  "origin": "https://www.shopify.com"
});

More examples

{
  "url": "https://en.wikipedia.org/wiki/Main_Page",
  "metrics": [
    "largest_contentful_paint",
    "cumulative_layout_shift"
  ]
}

Connect

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

{
  "mcpServers": {
    "chrome-ux-report": {
      "url": "https://gateway.pipeworx.io/chrome-ux-report/mcp"
    }
  }
}

See Getting Started for client-specific install steps.

crux_history