AI Shopping on Google: It Now Charges Inside AI Mode

Google is emailing Merchant Center accounts to say their products are now eligible for native checkout. If the Shopify store is linked to Merchant Center, the buyer can pay for the product inside AI Mode or Gemini, with Google Pay, without visiting the site. And the detail worth reading twice: eligible products are included automatically, with nothing for you to set up.

In other words, the decision about where your sale closes was not yours. You found out by email.

What native checkout is and what changed this week

Underneath that email is the Universal Commerce Protocol (UCP), an open standard Google presented on 11 January at NRF, built with Shopify, Etsy, Wayfair, Target and Walmart. It lets an AI agent talk directly to a store's checkout, inventory and fulfilment. Payment inside AI Mode and Gemini has existed since February.

What is new is the scale. On Friday 18 September Google extended it to many more merchants, hence the wave of emails. On ownership, Google's message is explicit: you keep full ownership of the customer relationship, the data and the sales. And its help centre adds that you remain the seller of record.

What the email does not say: where it works

Because the real scope is not in the email but in the Merchant Center help page, which narrows it down in its first line: it only applies to products eligible in the United States, Canada and Australia. A Spanish store selling in Spain is not affected today. If you have products listed in Merchant Center for any of those three countries, you are.

And the other half of the small print: the automatic switch-on comes from the Shopify integration. For every other merchant, Google's help asks you to meet technical and business requirements and fill in an interest form. On Shopify there is no form: linking the store to Merchant Center is enough.

Your situation	Is it on?	What you need to do
Shopify + products in the US, Canada or Australia	Yes, automatically	Go in and decide whether to keep it
Shopify + European markets only	Not yet	Decide before it arrives
Another platform + eligible markets	No	Requirements and interest form
Another platform + Europe only	No	Nothing, for now

What you lose in that sale even though you remain the seller

And that ownership is worth measuring carefully, because being the seller of record is not the same as being the place where the purchase happens. In a sale closed inside AI Mode:

The buyer never enters your site. No session, no cart of yours, no pixel, no remarketing and no cross-sell.
Your CRO plays no part. The product page you have spent months optimising is not seen in that purchase.
Behavioural data is never generated. You get the order, but not the path that led to it.

I am not saying it is bad. For many catalogues, selling where the customer already is is exactly right. I am saying it is a business decision, and business decisions are made; they are not accepted by silence.

How many stores in our portfolio would have it switched on

To find out whether this is a headline or a real problem, I checked the 19 sites with a catalogue that we manage to see what platform they run on.

Platform	Sites	Switched on automatically?
Shopify	1	Yes, in eligible markets
PrestaShop, Magento, WooCommerce or Salesforce Commerce Cloud	8	No
WordPress	3	No
Not identifiable from the outside	7	No, no Shopify signature
Total	19	1 case

The only brand on Shopify is a footwear brand, with stores in Spain, Germany and the Netherlands. So today, in our portfolio, it affects no one: it sells in three European markets that are not included yet. But the day Google opens Europe, it will be the first to have it switched on without having asked. That is why I am noting it now rather than on the day of the email.

A note on method: I took the platform from the public site, from the headers and from the response to /cart.js, which on Shopify returns the cart as JSON. I have no access to its Merchant Center, so I cannot confirm which countries its products are listed for.

How to check it and turn it off in two minutes

If after all that you want to review your own case, the route is short:

Look for the notice in the Merchant Center account's email: native checkout.
In the Shopify admin, go to Sales channels and, inside, to Agentic. That is where the switch is.
Decide with numbers: the margin on the affected products and what that customer is worth after the first purchase.
If you leave it on, let it be because you decided to.

My recommendation: decide before it arrives

If you sell in the United States, Canada or Australia on Shopify, it is already on: go in today and decide. If you only sell in Spain, there is nothing to switch off yet, but there is something to decide, because when it arrives it will not ask you.

And there is an underlying reading that does not depend on the country. When the place where the payment happens stops being yours, SEO does not disappear, but it changes target. You no longer drive traffic to a page: you feed a catalogue. In that sale, the Merchant Center feed acts as your product page. If you treat it as a formality today, it is the first place to look.