Google launched Common Commerce Protocol (UCP), an interoperability layer that lets AI brokers uncover merchandise, authenticate customers, and full transactions.
Not like AP2, which governs how brokers transfer cash, UCP orchestrates your entire commerce move.
UCP would require banks to create new approaches to authentication, consent, legal responsibility, and belief as AI brokers grow to be energetic members in commerce.
Google unveiled its Common Commerce Protocol (UCP) at this time, which primarily serves because the plumbing for a way AI brokers purchase issues on customers’ behalf. However what does it actually do and the way is it completely different from Google’s AP2 launched final fall? Right here’s a easy breakdown of the newly launched protocol.
What does UCP do?
Co-developed with main retailers and ecommerce gamers, together with Shopify, Etsy, Wayfair, Goal, and Walmart, Google’s Common Commerce Protocol is basically a standardized approach for AI brokers to find merchandise, request costs, authenticate customers, and full transactions. You possibly can consider it like HTTPS, which is a algorithm that serves as a standardized protocol that governs and encrypts how browsers request and servers ship internet content material over the web.
Equally, UCP is an interoperability layer that permits many programs to speak to one another and allows AI brokers to make purchases and selections on a client’s behalf, as a substitute of simply making product suggestions. UCP is greater than a market or a pockets. The brand new protocol coordinates the varied features of how brokers, retailers, identification programs, and cost rails work together throughout a transaction.
Google plans to make use of UCP to energy a brand new checkout characteristic on choose Google product listings that may enable consumers to take a look at utilizing Google Pay and PayPal from eligible retailers in AI Mode inside Search and within the Gemini app.
From an finish customers’ perspective, this will likely appear much like OpenAI’s partnerships with retailers like Walmart that enable consumers to make purchases inside ChatGPT. Google’s transfer, nevertheless, is markedly completely different. That’s as a result of Google owns the cost rails. Whereas the retailer stays the vendor of report, Google controls the checkout expertise in addition to the protocol, which standardizes identification, cost credentials, delivery info, and consent.
How does UCP differ from AP2?
The ultimate quarter of 2025 introduced a deluge of latest agentic commerce protocols to the market, creating confusion concerning the roles of protocols and the gamers concerned. Among the many protocols launched final 12 months was Google’s AP2, its Agent Funds Protocol. AP2 is far narrower in scope than UCP, nevertheless, as a result of whereas AP2 governs how an AI agent is allowed to maneuver cash, UCP orchestrates your entire commerce move.
UCP handles product and repair discovery, pricing and availability queries, service provider interplay, person intent and authorization checks, transaction affirmation, and achievement. AP2, alternatively, is fully funds targeted. It handles cost initiation, authorization limits, credential dealing with, transaction execution, and settlement signaling.
What does all of this imply for banks?
Agentic commerce is transferring quick and is ready to vary how transactions are initiated, approved, and executed. As AI brokers tackle a extra energetic function in buying, banks might want to rethink their function within the transaction stack and think about learn how to authenticate AI brokers and create insurance policies round who’s liable when an agent transacts. Thankfully, protocols like UCP create auditability and might program belief into each transaction.
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