Google launches UCP to let AI agents shop and check out for you
Google just introduced the Universal Commerce Protocol (UCP), an open standard co-developed with Walmart and Shopify to let AI agents handle the entire shopping journey. The protocol introduces native Google Pay checkout inside Search and Gemini, basically turning conversational AI into an autonomous buyer. For now, agentic checkout is rolling out to eligible U.S. retailers.
The Universal Commerce Protocol (UCP) is an open-source standard designed to let AI agents handle the entire shopping journey, from product discovery and brand chats to checkout and post-purchase care.
Co-developed by Google alongside Shopify, Walmart, Target, Etsy, and Wayfair, the framework is already backed by more than 20 major industry players, including Visa, Mastercard, Stripe, American Express, and Best Buy.
What it actually does
Traditional shopping chatbots usually just send you external links, leaving you to log in, add items to a cart, and check out manually. UCP gives different AI agents and merchant systems a common language so they can handle the transaction mid-conversation.
Right now, Google is rolling out native checkout inside Search's AI Mode and the Gemini app. Shoppers can research a product and immediately buy it using payment and address details stored in Google Wallet via Google Pay, with PayPal support coming down the line. Retailers stay the seller of record, keeping their customer data and order history.
Alongside checkout, Google rolled out Business Agent, letting brands deploy custom AI reps straight into Search. Retailers like Lowe’s, Reebok, Michael’s, and Poshmark are already testing it. There is also a pilot called Direct Offers, which uses AI to serve timely discounts to shoppers who are ready to buy inside AI Mode.
How it connects the dots
Instead of creating another walled garden, Google built UCP to play nicely with existing developer tools and industry standards.
It is fully compatible with Anthropic's Model Context Protocol (MCP), as well as Google's existing Agent2Agent (A2A) and Agent Payments Protocol (AP2). This means developers and platforms do not have to write bespoke integration code for every single AI assistant out there.
For catalog setup, Google added dozens of conversational data attributes inside Merchant Center. Merchants can feed the AI answers to common product questions, compatible accessories, or suitable replacements without overhauling their existing setups.
Agentic checkout is currently in testing with eligible U.S. merchants like Petco, e.l.f. Cosmetics, and Samsonite, with plans to expand globally over the coming months.
Why it matters
We see UCP as the moment AI shopping shifts from giving recommendations to actually closing sales. Google played this smartly by keeping brands as the sellers of record, convincing traditional retail giants to join rather than fight the AI agent wave.
If you run an e-commerce brand or develop retail tools, this is your signal to get your product feeds ready. Adapting your catalog for conversational search now will be just as critical as setting up your first online storefront was two decades ago.
Sources (1)
- blog.google(opens in a new tab)Originalblog.google