io.github.corewebvitals/state-of-cwv · v1.0.1 · cloud-and-infra
State of Web Vitals is healthy: it completed an MCP handshake in 971 ms and exposes 3 tools.
Core Web Vitals metrics by CMS, CDN, and framework — free remote MCP, no auth.
Endpoint: https://www.corewebvitals.io/api/state-of-cwv/mcp (streamable-http)
Repository · Website · JSON · Add to my inventory
| Users (last 30 days) | 0 |
| Handshake | Healthy |
| Auth needed | None |
| Tool count | 3 |
| Latency | 971 ms |
| Last checked (UTC) | 2026-10-16T07:10:44.898Z |
| Checked (UTC) | Status | Latency | Error |
|---|---|---|---|
| 2026-10-16T07:10:44.898Z | Healthy | 971 | |
| 2026-10-15T03:20:36.883Z | Healthy | 3267 |
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/po |
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 gr |
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. |