Google Analytics

Google Analytics Data API v1 (beta) provides programmatic access to GA4 report data with methods including runReport, batchRunReports, runPivotReport, runRealtimeReport, runFunnelReport, and getMetadata.

OAuth 2.0 and Service Account authentication supported with token-based quota system. API endpoint at analyticsdata.googleapis.com covers dimensions, metrics, custom dimensions/metrics, and audience exports extensively. Official client libraries for all major languages. Quota limits are 50,000 requests per project per day (standard) with hourly limits of 100-1000 requests per 100 seconds per user.

Supports custom dashboards, automated reporting, BigQuery integration, and real-time data access. Universal Analytics (v3) deprecated July 2023. Ideal for building analytics dashboards, integrating with business intelligence tools, and automating complex reporting workflows with comprehensive web and app data.