ga4-measurement-protocol-api-guide

Server-side event collection with GA4 Measurement Protocol requires sending POST requests to the mp.collect endpoint with your measurement_id and api_secret for authentication, plus a JSON payload containing client_id, events array, and optional user properties. This enables backend systems to submit events directly without client-side tracking.

GA4 Measurement Protocol requires two credentials: your measurement_id (which identifies your GA4 property) and api_secret (generated in GA4 settings). Both must be included in every POST request to authenticate server-side event submissions.

Yes. GA4 Measurement Protocol enables offline conversion tracking by accepting server-side requests from CRM systems, payment processors, and form backends. Send structured events with transaction data, items arrays, and user identifiers to integrate offline sales and leads into GA4.

Measurement Protocol payloads require client_id, an events array with event names and parameters, and optional user_properties. Events can include transaction_id, items arrays, and custom parameters. The JSON structure must post to mp.collect with measurement_id and api_secret for validation.

GA4 Measurement Protocol enforces rate limits on server-side requests. Implement retry logic with exponential backoff for failed submissions, monitor response status codes, and batch events efficiently to stay within quota while ensuring reliable event delivery from backend systems.

Yes. Measurement Protocol supports form lead events by accepting POST requests from backend form handlers. Structure events with lead parameters and user identifiers to track form submissions, lead quality, and conversion attribution directly from your server without relying on client-side pixels.