GA4 Query

Setup

Check prerequisites before querying:

Script path resolution: Before running any script, determine the correct base path. Check in this order:

1. .claude/skills/ga4-query/scripts/ — project-local install (run from repository root)
2. ~/.claude/skills/ga4-query/scripts/ — global install

Use whichever path exists. All script paths below use the project-local form; substitute the global path if that's where scripts are found.

1. Virtual environment: .claude/skills/ga4-query/scripts/.venv/ must exist
2. Config file: ga4-config.yaml must be findable (see Config section)
3. APIs enabled in GCP project: Google Analytics Data API + Google Analytics Admin API

First-time setup

# 1. Install dependencies
bash .claude/skills/ga4-query/scripts/setup.sh

# 2. Create ga4-config.yaml in project root or ~/.config/ga4-query/
#    (see Config section for template)

# 3. Enable APIs in GCP Console:
#    - Google Analytics Data API (analyticsdata.googleapis.com)
#    - Google Analytics Admin API (analyticsadmin.googleapis.com)

# 4. Test
ga4 accounts

Claude Code sandbox

When running inside the Claude Code sandbox, network access is restricted. Add the following domains to ~/.claude/settings.json under sandbox.network.allowedDomains:

Setup (pip install):

• pypi.org
• files.pythonhosted.org

Runtime (GA4 API):

• analyticsdata.googleapis.com
• analyticsadmin.googleapis.com
• oauth2.googleapis.com

Config

The script searches for ga4-config.yaml in this order:

1. --config CLI parameter (explicit path)
2. ./ga4-config.yaml (project root)
3. ~/.config/ga4-query/ga4-config.yaml (user-level)

Template (ga4-config.yaml):

property_id: "YOUR_PROPERTY_ID"
credentials_json: "/path/to/service-account.json"

The service account must have Viewer role on the GA4 property. Auth uses service_account.Credentials.from_service_account_file() with scope analytics.readonly.

Usage

Use the ga4 alias:

alias ga4='.claude/skills/ga4-query/scripts/.venv/bin/python3 .claude/skills/ga4-query/scripts/query.py'

Subcommands

report — Standard reports (main command)

# Sessions and users by date (last 7 days)
ga4 report -d date -m sessions,activeUsers --start 7daysAgo --end yesterday

# Top pages by views
ga4 report -d pagePath -m screenPageViews --start 30daysAgo --end yesterday --order-by screenPageViews --desc --limit 20

# Traffic sources
ga4 report -d sessionSource,sessionMedium -m sessions --start 30daysAgo --end yesterday

# With filter
ga4 report -d pagePath -m screenPageViews --start 7daysAgo --end yesterday --filter "pagePath=~/palvelut"

# Multiple filters (ANDed)
ga4 report -d date -m sessions --start 7daysAgo --end yesterday --filter "country==Finland" --filter "sessionSource==google"

# JSON via stdin (recommended — avoids shell escaping issues)
echo '{"dimensions":["pagePath"],"metrics":["screenPageViews"],"dateRanges":[{"startDate":"7daysAgo","endDate":"yesterday"}]}' | ga4 report --json -

# JSON as direct argument (only for simple JSON with no nested quotes)
ga4 report --json '{"dimensions":["pagePath"],"metrics":["screenPageViews"],"dateRanges":[{"startDate":"7daysAgo","endDate":"yesterday"}]}'

Flags:

• -d / --dimensions — Comma-separated dimension names
• -m / --metrics — Comma-separated metric names (required unless --json)
• --start — Start date (default: 7daysAgo)
• --end — End date (default: yesterday)
• --filter — Dimension filter (repeatable, ANDed together)
• --order-by — Sort field name
• --desc — Descending order (use with --order-by)
• --limit — Max rows
• --json — Raw JSON request body (overrides all other flags)

realtime — Live data

ga4 realtime -m activeUsers
ga4 realtime -d country -m activeUsers

No date range — realtime always returns last ~30 minutes.

Admin commands

ga4 accounts         # List accounts + properties
ga4 property         # Current property details
ga4 custom-dims      # Custom dimensions
ga4 custom-metrics   # Custom metrics

Global flags

--config /path/to/ga4-config.yaml    # Override config search
--property 123456789                  # Override property_id from config

Filter Syntax

Multiple --filter flags are ANDed. For OR logic or nested NOT, use --json passthrough via stdin (echo '...' | ga4 report --json -).

Date Formats

• YYYY-MM-DD — Specific date (2024-01-15)
• NdaysAgo — Relative (7daysAgo, 30daysAgo)
• yesterday — Yesterday
• today — Today (partial data)

Common Dimensions & Metrics

See references/dimensions.md and references/metrics.md for curated lists.

Quick reference — Dimensions

Quick reference — Metrics

Output Format

Success — JSON to stdout:

{
  "row_count": 7,
  "rows": [
    {"date": "20240101", "sessions": "142", "activeUsers": "98"}
  ],
  "metadata": {
    "dimensions": ["date"],
    "metrics": ["sessions", "activeUsers"]
  }
}

Errors — JSON to stderr + exit code 1:

{"error": "..."}

Notes

• GA4 returns all values as strings (unlike Google Ads micros). Numeric aggregation must be done after parsing.
• Realtime data covers approximately the last 30 minutes. Not all dimensions/metrics are available in realtime.
• GA4 has quota limits: 25,000 tokens/property/day for standard properties. Avoid excessive polling.
• date dimension returns format YYYYMMDD (no dashes).
• row_count in response reflects total matching rows (may exceed --limit).
• Admin commands (accounts, property, custom-dims, custom-metrics) require the Admin API to be enabled separately from the Data API.