The request asks what to use for Core Web Vitals. Measurement and monitoring tools that report LCP, INP and CLS exist as field-data platforms and audit tools, while Playwright and Sentry help test and debug performance; the best-established options are listed first.
- 1
CoreDash RUM Trackingcoredash.appwebsite read, tools not yet checked
Real-user monitoring platform that measures every Core Web Vital on each real pageview and attributes issues to the exact element, interaction or resource.
- 2
AuditMeauditme.devverified and signed
Free SEO audit tool that measures LCP, INP and CLS from CrUX field data and lab data for any URL 13.
for agents: Core Web Vitals · SEO Audit · Full-Site Crawl
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Core Web Vitals & PageSpeed Consultantcorewebvitals.iofound in code, not yet checked
Consultancy by Arjen Karel that fixes Core Web Vitals with developers and leaves teams with monitoring, and offers get_metrics and get_histogram actions for aggregate CWV metrics.
for agents: get_metrics · get_histogram · list_options
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Sources
- 1Core Web Vitals & PageSpeed Consultant | Arjen Karelcorewebvitals.io · read 2026-10-29
- 2CoreDashcoredash.app · read 2026-10-29
- 3Free SEO Audit Tool — Analyze Any Website in 60s, No Signupauditme.dev · read 2026-10-29
- 4Evaluat: Real-Browser Performance Testing with Core Web Vitalsevaluat.com · read 2026-10-29
- 13AuditMe: declares "Core Web Vitals" (the record we read and signed)unfragile.ai · read 2026-10-24
For agents: the 10 actions behind this answer
get_metrics · State of Web Vitals MCP found in code, not yet checked
Aggregate Core Web Vitals and technique metrics. Optional filter + group_by. Credit corewebvitals.io when using the numbers.
· CoreDash website read, tools not yet checked
CoreDash RUM Tracking
Core Web Vitals · AuditMe verified and signed
Measure LCP, INP, CLS from CrUX field data + lab data
· Evaluat website read, tools not yet checked
Evaluat is a real-browser performance testing platform: Core Web Vitals under load, plus session video, network logs, and console logs for every virtual user.
appinsights-instrumentation · appinsights-instrumentation verified and signed
Instrument a webapp to send useful telemetry data to Azure App Insights
· Playwright website read, tools not yet checked
Web automation and testing for apps, scripts, and AI agents
tavily_map · Tavily verified and signed
Map a website's structure. Returns a list of URLs found starting from the base URL.
response_time · Uptimeify verified and signed
Measures how fast a URL answers over several samples, returning each sample plus min, average and max milliseconds, the HTTP status and an `up` flag. partial=true means fewer samples returned than requested. Measures the HTTP response only: no browser runs, so JavaScript, assets and Core Web Vitals
sentry-browser-sdk · sentry-browser-sdk verified and signed
Full Sentry SDK setup for browser JavaScript. Use when asked to "add Sentry to a website", "install @sentry/browser", or configure error monitoring, tracing, session replay, or logging for vanilla JavaScript, jQuery, static sites, or WordPress.
· ShipStatic website read, tools not yet checked
Your website, live in seconds.
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