Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add surendranb/google-analytics-mcp --skill ga4-limitationsgit clone --depth 1 https://github.com/surendranb/google-analytics-mcpWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/surendranb/google-analytics-mcp/ga4-limitations)<a href="https://agentmods.dev/skills/surendranb/google-analytics-mcp/ga4-limitations"><img src="https://agentmods.dev/badge/skills/surendranb/google-analytics-mcp/ga4-limitations/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/surendranb/google-analytics-mcp/ga4-limitations"><img src="https://agentmods.dev/badge/skills/surendranb/google-analytics-mcp/ga4-limitations.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00037 | $0.00608 |
| Opus 5 | $0.00018 | $0.00304 |
| Sonnet 5 | $0.00007 | $0.00122 |
| Haiku 4.5 | $0.00004 | $0.00061 |
Grade A, and why
ga4-limitations scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 37 lines — stays where its author put it; the contents beside it link to each section on GitHub.
GA4 API Limitations
What this MCP cannot do via the GA4 Data API, and where to go instead. Attempting these will either fail or produce meaningless aggregate data.
Not available via this MCP
| Analysis type | Why not available | Where to do it instead |
|---|---|---|
| Funnel analysis (drop-off by step) | runFunnelReport exists in the API but is not exposed by this MCP |
GA4 UI → Explore → Funnel Exploration |
| Cohort retention (week N return rate) | runCohortReport not exposed |
GA4 UI → Explore → Cohort Exploration |
| User path / flow analysis | Not available in aggregate API | GA4 UI → Explore → Path Exploration |
| Per-user event sequences | API returns aggregate rows only — no individual user journeys | BigQuery export (raw events) |
| Real-time custom breakdowns | Realtime API is limited to last 30 minutes, basic dimensions | GA4 UI → Realtime report |
| Raw event-level data | Data API aggregates; no row-level access | BigQuery export |
| Segment overlap / Venn analysis | Not a native API feature | BigQuery or GA4 Explore comparisons |
| Custom channel group definitions | Read-only via API; custom groups must be created in UI | GA4 UI → Admin → Custom Channel Groups |
What IS available (and often underused)
- Period-over-period in one call: pass two
date_ranges— GA4 returns both periods in a single response (usedate_range_start/date_range_endfor each; call twice if two-range isn't supported) - Ecommerce metrics: full purchase funnel metrics (
itemsViewed,itemsAddedToCart,itemsPurchased,purchaseRevenue,cartToViewRate) — aggregate only, not per-session funnel - Search Console integration: available as a linked report in GA4 UI but the Search Console data is on a separate API — not queryable via this MCP (use Google Search Console API directly)
- Custom dimensions and metrics: available if defined in the property — they appear in the schema alongside standard fields
- Attribution modeling comparisons: not directly queryable — data-driven vs last-click is set at the property level, not a query-time parameter
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 9d ago First seen · 37 lines · 37 tokens per session scan A e5ed4ba5bd07
ga4-limitations is a skill published in the GitHub repository surendranb/google-analytics-mcp (241 stars, last pushed 6d ago), licensed MIT. It adds 37 tokens to every session and 608 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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