"nf-core" matching MCP connectors:

Uptime, SSL, domain, and Core Web Vitals monitoring for websites and APIs. List, create, update, and pause monitors; read incident history with AI-generated diagnosis; pull Lighthouse and CrUX page speed data. OAuth 2.0 with dynamic client registration — works out of the box with Claude Desktop connectors. Free plan: 20 monitors, read-only MCP.

16 HTTP tools (12 free, 4 x402): GSPC board, signed evidence, Ed25519 verify. Measure, not certify.

Trust scores and dated liveness/drift facts for MCP servers, from the lastseen.dev notary register.

State of Web VitalsA

io.github.corewebvitals

Core Web Vitals metrics by CMS, CDN, and framework — free remote MCP, no auth.

Via protocol hop count, value discarded

rum-analyticsAOAuth

io.catchmetrics.mcp

RUM platform for web performance analytics, Core Web Vitals, and third-party script monitoring.

Real-user Core Web Vitals for any website with enough traffic, from Google's Chrome UX Report…

LLM Observability & Orchestration Agent (Langchain)

Website performance monitoring: scans, Core Web Vitals, RUM data and alerts.

coredashOAuth via extension

io.github.corewebvitals

Real User Monitoring for Core Web Vitals. Query LCP, INP, CLS field data from real visitors.