Google Help Document On Universal Commerce Protocol (UCP)

"UCP is Universal Commerce Protocol, 'a new open standard for agentic commerce that works across the entire shopping journey.' It basically lets you more effortlessly connect your ecommerce store with agents to have the AI agents checkout with your site."

"The help page also reinforces that UCP powers agentic checkout in experiences like Gemini and Google AI Mode, positioning it as core infrastructure for AI driven commerce across Google."

"This article only applies to products with eligibility in the United States and for participating merchants and partners. You may see this checkout experience soon on specific surfaces such as AI Mode in Search and Gemini."

Google published a new help document in Merchant Center detailing the Universal Commerce Protocol (UCP), an open standard for agentic commerce that streamlines connections between ecommerce stores and AI agents. UCP allows AI agents to complete checkout processes directly on merchant sites. The protocol powers checkout experiences in Google's AI Mode and Gemini, positioning it as essential infrastructure for AI-driven commerce. The feature currently applies to eligible products in the United States for participating merchants and partners. Users may encounter this checkout experience on specific surfaces including AI Mode in Search and Gemini, with the help documentation expected to evolve significantly in coming months.

Read at Search Engine Roundtable