Commerce funnel on Shopify
How add-to-cart, checkout, and purchase events are attributed to sessions.
Stages
| Stage | Source |
|---|---|
| Add to cart (PDP) | DOM data-catail-commerce on adaptive buttons |
| Cart / checkout | Shopify Web Pixel + catail_session_key cart attribute |
| Purchase | Web Pixel checkout_completed or orders/create webhook |
Session bridge
The theme tracker writes catail_session_key to cart attributes. The Web Pixel and order webhook read the same key so funnel stages stay on one session.
See Install on Shopify for Web Pixel privacy settings and webhook URL.