Google’s Universal Cart, and what it reads from your shop.
Universal Cart is one shopping cart across Google. A shopper saves products from many retailers in AI Mode in Search or the Gemini app, Google watches them for price drops and restocks, and checkout runs through Google Pay or the merchant’s own site. It draws on Google’s Shopping Graph, which Google fills from Merchant Center feeds and from what shops publish on their own pages.
Launched in the US
October 15, 2026
Where shoppers save
AI Mode and the Gemini app
Checkout
Google Pay or the shop’s own cart
Seller of record
The merchant
As Google describes it
How the cart works.
Google’s launch post says the cart does four things once a product is in it.
A shopper savesProducts from several retailers, in AI Mode in Search or in the Gemini app, and finds them where they left them.
Google watchesEach saved product, for price drops and for when it is back in stock, and shows promo codes and card perks from Google Wallet.
The shopper checks outIn a few taps with Google Pay at many stores, or in the merchant’s own cart to finish on its site.
The merchant sellsAs the seller of record, sending the order confirmation and giving customer support.
The Shopping GraphGoogle’s data set of products and sellers, which Google puts at more than 60 billion listings. It is filled two ways: product data merchants send through Merchant Center, and what retailers publish across the web, their own product pages among it.
Where it works, and where it goes next.
From Google’s two posts on the cart: the preview at I/O and the US launch.
May 19, 2026Shown at I/OGoogle first showed the cart.Happened
October 15, 2026Launched in the USIn Google Search, AI Mode in Search and the Gemini app.Live
In the coming monthsCheckout in Canada and AustraliaThen the UK, Google said in May.Announced
Later, no date givenYouTube and GmailGoogle said in May they would follow.Announced
Two things a merchant can want.
In this order. Being found and saved rests on product data, and any shop can work on it today. Checkout on Google rests on the Universal Commerce Protocol, and Google lets merchants in from a waitlist.
To be found and saved
Rests on product data in the Shopping Graph
Send a Merchant Center feed that says what the site says. Google recommends it alongside the data on each page, not in place of it.
Put merchant listing data on each product page: a Product with its name, image and offers, and an Offer with a price above zero and its currency.
Keep price, stock and pictures the same as the feed. The cart’s alerts are about price and stock, so those are the facts worth keeping exact.
Let crawlers fetch and index each product page: not shut out in robots.txt, not marked noindex, one canonical address.
This is the path Shop Ready works on, in your shop’s own templates.
To let shoppers check out on Google
Rests on the Universal Commerce Protocol, from a waitlist
Prepare Merchant Center and join the waitlist: an account in good standing, with approved products for free listings.
Set return policies and a way to reach support, each policy with its cost, its window and a link to the full policy.
Mark which products can check out in the feed: set checkout_eligibility under native_commerce to TRUE.
Publish a profile for the protocol, secure the endpoints, and choose checkout on Google or in your own cart. Google approves each integration before it goes live.
From Google’s guide to the protocol and its Merchant Center steps. Subscriptions, installment plans, personalized items, used and final sale items, pre-orders and goods that need an age check cannot use checkout on Google.
The data on each product page.
The fields Google lists for merchant listings. Give only what the page shows.
Field
What it holds
Google lists it as
name, image
The product’s name as the page shows it, and a photo a crawler may fetch
Required
offers
An Offer to sell the product
Required
price, priceCurrency
The current price above zero, and its three-letter currency
Required
availability
Whether it can be bought now
Recommended
itemCondition
New, refurbished or used
Recommended
shippingDetails
The shipping policy, best set once for the shop
Recommended
hasMerchantReturnPolicy
The return policy, best set once for the shop
Recommended
brand, gtin, sku
The brand, the barcode number, and the shop’s own id
Recommended
description
The product description, which Google strongly recommends
Recommended
Not said by Google
How the cart picks which listing or which seller to show, or how it weighs a feed against a page. Neither of Google’s posts on Universal Cart describes it, and this page does not guess.
Shop Ready
Fix the pages, then prove it.
Shop Ready finds your product page templates, checks one live page from each with mttr, fixes the data in the template from what the page already shows, ships as you allow, and checks again.
In the US, from October 15, 2026, in Google Search, AI Mode in Search and the Gemini app. Google said in May that YouTube and Gmail would follow, with no date, and that checkout would come to Canada and Australia in the coming months, then the UK.
Who is the seller of record when a shopper checks out?
The merchant. Google’s launch post says the merchant stays the seller of record, sends the order confirmation and gives customer support.
Does a shop need Merchant Center?
To be found, Google recommends a Merchant Center feed alongside the data on each page, not in place of it. To let shoppers check out on Google, its steps ask for a Merchant Center account in good standing, with approved products for free listings.
How does the cart choose which seller to show?
Google has not said. Neither of its posts on Universal Cart describes how the cart picks a listing or a seller, or how it weighs a feed against a page.
Can Shop Ready get a product into Universal Cart?
No. It makes sure your product pages state what they show, in the fields Google lists, and proves it on the live page. Merchant Center and Google’s own review decide what shows in Universal Cart.