State of Web Vitals
io.github.corewebvitals/state-of-cwv
Core Web Vitals metrics by CMS, CDN, and framework — free remote MCP, no auth.
This endpoint completed initialize and tools/list. No tool was called.
- Rank
- #2602
- Score
- 82
- Tool tokens
- 1,125
- Tools
- 3
Tools
Token cost is the o200k count of the tools list JSON, including schemas, before any tool is called.
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 numbe
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:
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.
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