- CoreDash. Real User Monitoring for Core Web Vitals
CoreDash. Real User Monitoring for Core Web Vitals
Query LCP, INP, and CLS field data from real visitors. Three tools: get_metrics, get_timeseries, get_histogram. Filter and group by device, country, page path, browser, OS, and 20+ dimensions. All data is real user monitoring (RUM) at the p75 percentile, the standard Google uses for Core Web Vitals ranking signals.
Overview
CoreDash MCP Server
Real User Monitoring (RUM) for Core Web Vitals. Query LCP, INP, and CLS field data from real visitors, directly from your MCP compatible client.
Tools
- get_metrics. Current performance scores. Filter by device, country, page path, URL, browser, OS, and 20+ dimensions. Group by any dimension to compare segments (for example, group by device to compare mobile vs desktop).
- get_timeseries. Performance over time. Detect regressions and trends. The summary field tells you if metrics are improving, stable, or regressing.
- get_histogram. Distribution shape of a single metric. Around 40 buckets with counts and good, improve, or poor ratings.
Setup
- Generate an API key at https://coredash.app/settings/api
- Add the server to your MCP client with header
Authorization: Bearer cdk_YOUR_API_KEY
OAuth is also supported via WWW Authenticate discovery.
What it tracks
- LCP (Largest Contentful Paint). Loading performance.
- INP (Interaction to Next Paint). Interactivity.
- CLS (Cumulative Layout Shift). Visual stability.
- FCP, TTFB. Diagnostic metrics.
All data comes from real users in production at the p75 percentile, the standard Google uses for Core Web Vitals ranking signals.
Filterable and groupable dimensions
Device type, country, page path, URL, browser, OS, plus 20+ more including attribution elements (lcpel, inpel, clsel) so you can pinpoint which element on the page is causing slow LCP, slow INP, or layout shifts.
Links
- Website: https://coredash.app
- Source repo: https://github.com/corewebvitals/coredash-mcp
- Official MCP Registry name:
io.github.corewebvitals/coredash
Server Config
{
"mcpServers": {
"coredash": {
"url": "https://app.coredash.app/api/mcp",
"headers": {
"Authorization": "Bearer cdk_YOUR_API_KEY"
}
}
}
}Project Info
Created At
24 days agoUpdated At
24 days agoAuthor Name
corewebvitalsStar
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