CoreWebVitals.io

State of Web Vitals MCP

Free, no-auth remote MCP server (registry io.github.corewebvitals/state-of-cwv) serving cross-site Core Web Vitals and technique metrics from real Chrome field data by CMS, CDN and framework. A live anonymous tools/list on 2026-11-04 returned three tools (get_metrics, get_histogram, list_options); the verbatim response with input schemas is saved in json-schema/.

GitHub

Documentation

📖
Documentation
https://www.corewebvitals.io/state-of-cwv

Schemas & Data

📊
JSONSchema
https://artifacts.apis.io/corewebvitals-io/json-schema/corewebvitals-io-state-of-cwv-mcp-tools-list.json

Other Resources

🔗
MCPServer
https://www.corewebvitals.io/api/state-of-cwv/mcp
🔗
APIsJSON
https://artifacts.apis.io/corewebvitals-io/apis.yml

Work with this as data

Every API here is available over the APIs.io API and to AI agents over MCP.

MCP server

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Tools for apis

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  • find_similar_apisAPIs that look like this one.
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  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

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API entry from apis.yml

apis.yml Raw ↑ 
aid: corewebvitals-io:state-of-cwv-mcp
name: State of Web Vitals MCP
description: Free, no-auth remote MCP server (registry io.github.corewebvitals/state-of-cwv) serving cross-site
  Core Web Vitals and technique metrics from real Chrome field data by CMS, CDN and framework. A live
  anonymous tools/list on 2026-11-04 returned three tools (get_metrics, get_histogram, list_options);
  the verbatim response with input schemas is saved in json-schema/.
humanURL: https://www.corewebvitals.io/state-of-cwv
baseURL: https://www.corewebvitals.io/api/state-of-cwv/mcp
tags:
- MCP
- Core Web Vitals
- Web Performance
properties:
- type: MCPServer
  url: https://www.corewebvitals.io/api/state-of-cwv/mcp
- type: JSONSchema
  url: json-schema/corewebvitals-io-state-of-cwv-mcp-tools-list.json
- type: Documentation
  url: https://www.corewebvitals.io/state-of-cwv