Google Analytics tracking

Sellers can now connect a GA4 Measurement ID to their account. ListBee injects gtag.js on product pages and thank-you pages, and fires a purchase event when an order completes. UTM parameters are configurable per listing with sensible defaults.

What changed

New: ga_measurement_id field on AccountResponse — GA4 Measurement ID associated with the account
New: PUT /v1/account now accepts ga_measurement_id — set or clear the Measurement ID (G-XXXXXXXXXX format, or null)
New: utm_source, utm_medium, utm_campaign fields on CreateListingRequest, UpdateListingRequest, and ListingResponse — override per-listing UTM attribution (all optional, max 100 chars each)
Behavior: When ga_measurement_id is set, gtag.js is injected on product pages and thank-you pages; a purchase event fires on the thank-you page with transaction_id, value, and currency
Behavior: UTM defaults applied at render time — utm_source → listbee, utm_medium → product_page, utm_campaign → listing slug; null fields use defaults

See the Google Analytics tracking guide for setup steps and code examples.