Google CrUX MCP

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Works with Claude Code, Codex, VS Code, Cursor, Windsurf, Claude Desktop. Read the repository before you give any tool access to your data.

npx agentmarket install connector/a1-x-tech-mcp-google-crux

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What this server can do and what it asks for, from its tool list and install config. Checked Oct 25, 2026.

Tools

6 read · 0 write · 0 deleteRead-only

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Node.js package

Tools (6)

Read from the source code; the running server may differ. Descriptions are the server’s own words; hidden characters are shown as [U+…].

• compare_form_factorsPhone vs desktop vs tabletread-only

  Compares real-user performance across device classes for an origin or URL: one aggregated all-devices record plus phone, desktop and tablet records (4 API requests = 4 quota units of the 150/min budget). Per device: p75 + rating per metric; `traffic_share` gives each device's fraction of page loads (from the unfiltered form_factors metric). Devices without enough data come back as {no_data: true} — expected for tablet almost always. Default metrics: the three Core Web Vitals. Provide exactly one of `origin` or `url`.

• compare_origin_vs_urlOrigin vs specific pageread-only

  Compares the site-wide origin record against one specific page (2 API requests): p75 + rating per metric for each, so you can tell whether a page is faster or slower than the site average. Either side can come back {no_data: true} (single pages often lack data; redirecting homepages can lack origin data while pages have it). Default metrics: the three Core Web Vitals. Both `origin` AND `url` are required here (unlike the other tools).

• get_core_web_vitalsCore Web Vitals assessmentread-only

  One-call Core Web Vitals assessment for an origin or URL over the latest 28-day window. Per metric (LCP, INP, CLS + diagnostic FCP and TTFB): p75, rating (good | needs-improvement | poor, web.dev thresholds: LCP ≤2500ms/>4000ms, INP ≤200ms/>500ms, CLS ≤0.10/>0.25) and the good/needs_improvement/poor user-experience densities (~sum 1.0). `passes_core_web_vitals` is true when all three CWV rate good. Timings are ms; CLS is unitless. Returns {no_data: true} when the origin/URL has insufficient traffic in CrUX. Provide exactly one of `origin` or `url`.

• get_cwv_trendCore Web Vitals trendread-only

  Weekly p75 trend for an origin or URL from the CrUX History API (1 request). Per metric: `points` — array of {period_end, p75, rating}, one per week (each week is a 28-day rolling window ending on period_end; ineligible weeks are skipped), and `delta` — first vs last p75 with direction improved | regressed | stable (lower is always better). Default metrics: the three Core Web Vitals; `weeks` caps the history depth (1..40, default 25). History data updates on Mondays. Returns {no_data: true} when CrUX has no data. Provide exactly one of `origin` or `url`.

• query_history_recordCrUX weekly timeseries (raw)read-only

  Returns the weekly CrUX timeseries for an origin or URL (raw API response, updated Mondays ~04:00 UTC): up to 40 collection periods, each a 28-day rolling window. Per metric: `histogramTimeseries` (bins with `densities` arrays), `percentilesTimeseries.p75s` and `fractionTimeseries`; all series align with `record.collectionPeriods`. Ineligible periods appear as null p75s and "NaN" densities — tolerate non-numeric entries. A no-data answer (HTTP 404) is returned as {no_data: true}. Prefer get_cwv_trend for a cleaned p75 trend.

• query_recordLatest CrUX record (raw)read-only

  Returns the latest 28-day rolling CrUX record for an origin or URL (raw API response, updated daily ~04:00 UTC). Per metric: `histogram` (3 bins good/needs-improvement/poor with `density`), `percentiles.p75`, and for enum metrics `fractions`. Timings are integer ms; cumulative_layout_shift p75 is a string-encoded double (e.g. "0.05"). `collectionPeriod` always spans 28 days. `urlNormalizationDetails` appears if the URL was normalized (e.g. fragment stripped). A no-data answer (HTTP 404) is returned as {no_data: true} — not an error. Prefer get_core_web_vitals for a ready-made assessment; use t…

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Last commit

Oct 4, 2026 (25 days ago)

Last release

Aug 18, 2026 (2 months ago)

From GitHub (fetched Oct 24, 2026).

Details

Registry name

io.github.A1-x-Tech/mcp-google-crux

Version

1.1.0

Auth

API key

Packages

npm mcp-google-crux

License

MIT

Repository

github.com/A1-x-Tech/mcp-google-crux

Website

github.com/A1-x-Tech/mcp-google-crux#readme

First seen

Oct 24, 2026

Last checked

Oct 25, 2026

Source

Official MCP Registrygithub-graphql