Key points
- Google's Universal Cart is now live for US users in Search, including AI Mode, and in the Gemini app, after a preview at I/O in May.
- Shoppers can pay through Google's own checkout or transfer items to a retailer's cart; the merchant remains the seller of record either way.
- Cart transfer is one-way for now: Google's docs say updating, deleting or syncing cart contents with the merchant is not supported.
- Merchant analytics list cart transfer and purchase metrics, but Search Engine Journal found no metric for products saved to a cart.
Why it matters for marketers: Shopping journeys may start and pause inside Google before a shopper reaches your site, so merchants need to know which checkout path applies and what their analytics can actually show.
Google has begun rolling out Universal Cart to US users in Search and the Gemini app. The tool, first previewed at I/O in May, lets shoppers gather products from different retailers in one place and keep that cart across both surfaces. It sends alerts when a saved item drops in price or returns to stock, and it can show promo codes.
Google also ties the cart to Google Wallet, so it can suggest which saved card to use based on each card's perks. Buyers can finish the purchase through Google or move the items into the retailer's own cart. Search Engine Journal reports that Google named several large retailers and many Shopify merchants as participants, and that the merchant stays the seller of record in both cases.
For marketers, the cart adds a step where intent is captured before a shopper ever visits a brand's site. Price alerts and promo code display also mean discounts may reach shoppers through Google rather than through your own email or ads. Competition is growing, with OpenAI, Meta and Amazon all offering agentic shopping features, according to The Verge and TechCrunch.
Reporting is the open question. Search Engine Journal notes that Google's merchant tools track cart transfers and purchases, but none of the documentation it reviewed lists a metric for items merely saved. It also could not confirm how Shopify stores' analytics behave for in-cart purchases. Merchants should review their UCP settings in Merchant Center, and watch for the promised Gmail and YouTube integrations, which still have no timeline.
Sources
This brief is our own summary. Read the full reporting at the source.
