Hosted, read-only Google Analytics 4 MCP: reports, period comparisons, realtime, custom fields.
com.querysail/ga4 (MCP) — Hosted, Read-Only Google Analytics 4 Server
This MCP server exposes hosted, read-only Google Analytics 4 capabilities for building integrations. It provides access to GA4 reports, period comparisons, realtime data, and support for custom fields.
🛠️ Key Features
Hosted access to Google Analytics 4
Read-only operations
Reports retrieval
Period comparisons
Realtime data access
Custom fields support
🚀 Use Cases
Pulling GA4 reporting data into MCP-enabled workflows
Comparing analytics across different periods
Fetching realtime metrics for near-live monitoring
Handling GA4 custom fields in integration logic
⚡ Developer Benefits
Standard MCP tooling for GA4 reporting, comparisons, and realtime needs
Works with custom fields when those are part of your GA4 setup
QuerySail is a hosted, read-only MCP server for Google Analytics 4. Connect it to ChatGPT, Claude, Codex, Cursor or VS Code, sign in, connect your Google account once, and ask about your traffic, engagement and conversions in plain language. There is nothing to install, no Google Cloud project and no API key to paste.
Endpoint:https://mcp.querysail.com/ga4/mcp (Streamable HTTP, OAuth 2.1 with dynamic client registration)
This repository holds the public listing files (MCP Registry server.json, a Claude Code plugin, client configs). The service itself is hosted at querysail.com; its source is not published here.
Tools
All tools are read-only. QuerySail cannot create or edit properties, data streams, key events, audiences or any other Google Analytics setting.
Tool
What it does
list_properties
Lists the Google Analytics 4 properties your connected Google accounts can read, with exact property IDs and their Analytics accounts.
list_fields
Lists the dimensions and metrics a property can report on, including its custom dimensions, custom metrics and key events.
run_report
Users, sessions, views, engagement, events, key events, revenue and any other Data API metric, broken down by date, channel, source/medium, landing page, page, country, device, event and more, with filters.
compare_report
Compares two periods (previous period, same weekdays a year earlier, or custom dates) and lists the channels, sources, pages or countries that gained or lost the most.
run_realtime_report
Active users, views and events in the last 30 minutes, by country, city, device, page or event.
Example prompts
How many users and sessions did my site have in the last 28 days?
Which channels brought the most sessions last month, and how did that change from the month before?
What are my top landing pages by key events?
How many people are on the site right now, and from which countries?
Compare organic search sessions with the same weeks last year.
Setup
You need a QuerySail account with Google Analytics connected: sign up at https://querysail.com and choose Connect Google Analytics under Account → Connections. Each client below opens a browser window to sign in the first time.
Claude Code
bash
claude mcp add --transport http --scope user querysail-ga4 https://mcp.querysail.com/ga4/mcp
Then run /mcp, choose querysail-ga4 and sign in. Or install it as a plugin, which also adds a Google Analytics analysis skill:
Open Customize → Connectors, select + Add → Add custom connector, name it QuerySail GA4 and paste https://mcp.querysail.com/ga4/mcp as the server URL.
ChatGPT
Turn on Developer mode under Settings → Security and login, go to chatgpt.com/plugins, select the plus button and paste the endpoint as the connection URL.
Google access uses the analytics.readonly scope, granted separately from Search Console. Refresh tokens are encrypted at rest. You can hide properties, disconnect Google or delete your account at any time.
Reports are fetched from Google when asked and cached for at most 15 minutes; realtime reports are not cached. Universal Analytics properties are not supported.
Google may apply thresholding or sampling to some reports; QuerySail passes those flags on to your assistant. Google's per-property API quotas apply.