Google equips AI shopping agents with carts, catalogs and loyalty perks, boosting

Google’s Universal Commerce Protocol (UCP) now supports three core capabilities that transform how generative‑AI agents handle e‑commerce transactions. The newly added shopping‑cart function lets an AI assistant bundle multiple SKUs into a single checkout flow, rather than prompting the user to add items one by one. According to The‑Decoder, the catalog extension streams live product metadata—including price, variant options, and stock levels—directly from a retailer’s inventory system, eliminating the latency that has traditionally plagued AI‑driven recommendations (The‑Decoder). Finally, the identity link binds a shopper’s logged‑in profile to the UCP session, automatically applying loyalty points, membership tiers, and promotional codes that would otherwise require manual entry on the merchant site (The‑Decoder).

Integration of these features is slated for Google’s AI Mode in Search and the Gemini app, where conversational queries can now culminate in a complete purchase without leaving the chat interface. The Merchant Center will expose a simplified onboarding workflow for small and midsize merchants, allowing them to publish a UCP‑compatible catalog with a few clicks. Partners such as Commerce Inc., Salesforce, and Stripe have already announced support for the protocol on their platforms, signaling a broader ecosystem push to standardize AI‑mediated checkout (The‑Decoder).

The rollout builds on the initial UCP launch earlier this year, which was introduced as an open standard in collaboration with major retailers including Shopify, Etsy, Wayfair, Target, Walmart, Visa and Zalando. Those early adopters provided the baseline for product‑ID mapping and payment tokenization; the new cart, catalog, and identity layers now close the loop by handling multi‑item transactions, real‑time inventory checks, and loyalty‑benefit application—all within the same API call set (The‑Decoder). This end‑to‑end flow reduces friction for both consumers, who no longer need to toggle between chat and web pages, and merchants, who can retain control over pricing and promotions while leveraging AI’s conversational reach.

Industry analysts note that the move positions Google to compete directly with Amazon’s voice‑shopping stack and Meta’s upcoming AI commerce pilots. While The‑Decoder does not provide usage metrics, the inclusion of Stripe—a dominant payment processor for online commerce—suggests that Google is targeting a seamless settlement layer that can handle high‑volume, cross‑border transactions. Moreover, the identity link’s ability to propagate retailer‑specific loyalty data could give Google an edge in retaining high‑value shoppers who are traditionally locked into brand ecosystems (The‑Decoder).

The practical impact will be observable first in search‑driven purchase journeys. A user asking Gemini, “Find me a waterproof hiking jacket under $150 and apply my loyalty discount,” will trigger a UCP catalog query, receive live pricing and stock confirmation, have the item placed in a virtual cart, and see the discount auto‑applied before confirming payment—all without navigating to the retailer’s website. If the protocol scales as intended, it could redefine the “last mile” of AI commerce, turning conversational assistants from recommendation engines into full‑fledged checkout terminals.