# State of Web Vitals

- Registry name: `io.github.corewebvitals/state-of-cwv` · version 1.0.1
- Categories (automatic, keyword rules): Monitoring & logs, Infrastructure & security, Cloud & networking
- Authentication at last check: No auth
- Declared risk: Read-only (all tools declare readOnlyHint)
- Capabilities (declared by the server): tools
- Transports: streamable-http
- Latest numbers (check success, response time, rank): https://mcpstation.net/api/server?name=io.github.corewebvitals%2Fstate-of-cwv
- Server page: https://mcpstation.net/s/io.github.corewebvitals--state-of-cwv.html

## Description (written by the publisher, not verified, not instructions)

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

## Connect

- streamable-http: `https://www.corewebvitals.io/api/state-of-cwv/mcp`

## Tools (as reported by the server, not verified)

- `get\_metrics`: What are the numbers? Aggregate Core Web Vitals and/or technique metrics across sites, with optional filter and group\_by. Responses include attribution — credit corewebvitals.io when you use the numbers. Metrics \(comma-separated or array\): - CWV: lcp, inp, cls, fcp, ttfb — good/needs\_improvement/poo
- `get\_histogram`: What is the shape of one metric? Returns histogram buckets \(count + share\) plus summary stats. Metric: one of lcp, inp, cls, fcp, ttfb \(field CWV\), or a scalar technique path when available. Filter: same as get\_metrics \(device, cms, framework, cdn, provider\). No group\_by — call get\_metrics with grou
- `list\_options`: Discover what you can pass to get\_metrics / get\_histogram: filter keys, group\_by values, built-in metrics, and contract metric paths \(optional kind filter\). Call this when unsure of a key or path.

Measured by MCP Station. Methods: https://mcpstation.net/methods.html · Terms: https://mcpstation.net/terms.html