Google Unveils ‘Universal Commerce Protocol’ to Power the Next Generation of AI Shopping Agents
UCP is an open-source commerce standard for connecting AI shopping surfaces with merchants and payment providers.
- Infrastructure
- AI Agents
- Digital Commerce
At the National Retail Federation conference, Google introduced the Universal Commerce Protocol (UCP), an open-source standard for commerce interoperability among consumer surfaces, businesses, and payment providers. Google says UCP will support a new checkout experience for eligible product listings in AI Mode and the Gemini app in the United States, while the protocol itself is intended for use beyond Google's own products.
Google developed UCP with companies including Shopify, Etsy, Wayfair, Target, and Walmart. Instead of requiring a unique point-to-point integration between every consumer surface and every business, UCP defines shared commerce primitives and a way for participants to discover and negotiate supported capabilities. A business publishes a profile describing the services and endpoints it supports; a client then uses those declared capabilities rather than scraping the merchant's site.
In his NRF remarks, Google CEO Sundar Pichai described UCP as open and platform-agnostic. Google's launch announcement says more than 20 companies across retail, payments, and commerce have endorsed the protocol.
Under the Hood
UCP separates commerce services, such as checkout, from optional capabilities, such as fulfillment choices and discounts. Its technical overview defines bindings for REST, the Model Context Protocol (MCP), and Agent2Agent (A2A), allowing the same commerce capabilities to be exposed through different transports. UCP is also designed to work with the Agent Payments Protocol (AP2) so payment authorization can remain separate from the shopping workflow.
What UCP Does — and Does Not Do
UCP is an opt-in interoperability standard, not permission for an agent to scrape a merchant's website. Participating businesses choose which capabilities and endpoints to expose. Google's announcement also says retailers remain the merchant of record and can preserve their customer relationships, while payment credentials are handled by the customer's chosen provider.
UCP could add another surface for product discovery and checkout, but it does not mean the era of SEO is ending. Retailers still need accurate, discoverable product information for people and search engines. If agent-mediated commerce grows, businesses may also need structured catalogs, clear policies, and machine-readable capability profiles that agents can use reliably.
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Fenwei Bian is a software developer in her thirties who spends her working hours in pull requests and her weekends with her hands in soil or sawdust. Years of open source on GitHub taught her that names are interfaces: a good one is clear, honest about what it does, and kind to whoever has to use it next.
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Victor Zhou is a technology founder and standards editor focused on digital identity and trust. He founded Namefi, edits Ethereum Improvement Proposals, and previously led smart-contract architecture work at Google Labs.
His work sits at the intersection of naming, ownership, and the systems people use to establish identity online. That perspective makes him especially interested in the way names move between personal meaning, public recognition, and digital infrastructure.
For Namefi, Victor edits and writes about domains as durable digital identity: how names become ownable onchain assets, how tokenization changes custody and trust, and what naming can learn from the systems people use to establish identity online.