UCP
UCP (Universal Commerce Protocol) is a commercial transaction standard protocol designed for AI agents, intended to regulate the process by which agents execute commercial interactions in automated scenarios. The protocol covers core steps including product discovery, price inquiry, shopping cart management, and checkout payment. Through unified interface specifications, it enables AI agents to conduct standardized interactions with e-commerce platforms or service providers on behalf of users, serving as a foundational infrastructure protocol for agent-economy interoperability.
Timeline (last 90 days)
UCP is compatible with AP2 and MCP, currently runs in Search's AI Mode and the Gemini app, and its payment feature launched first in the US, with Canada, Australia and the UK having announced they will follow.
UCP has the backing of more than twenty companies including Visa, Mastercard, Stripe, Adyen and American Express.
UCP (Universal Commerce Protocol) was launched in January 2026, developed by Google together with Shopify, Etsy, Wayfair, Target and Walmart.
Google is leading the push for UCP (Universal Commerce Protocol), and Visa launched AP2 (Agent Payments Protocol) for agent identities, focusing on the questions of who is paying and whether user authorization has been obtained.
On September 28, 2026, Shopify announced that browser-equipped agents can complete checkout, including using Shop Pay, provided the buyer grants authorization, using the UCP protocol underneath.
Google's UCP is an open-source agentic commerce checkout standard and is compatible with AP2.
Shopify is migrating its e-commerce protocol from traditional MCP to UCP.
UCP (Universal Commerce Protocol) is a unified standard jointly advanced by Google, Shopify, and Walmart.
Converting HTML web pages into structured JSON catalogs can significantly reduce LLM token consumption, with cost differences of up to tens of times.
UCP exposes a merchant's supported payment methods and API endpoints in JSON format through a Merchant Capabilities Manifest file.
4 more timeline events
All Facts (15)
文章介绍的六大AI智能体协议为MCP、A2A、UCP、AP2、A2UI和AGUI
95%UnverifiedUCP (Universal Commerce Protocol) provides a structured product catalog through the /.well-known/ucp endpoint.
60%UnverifiedUCP is compatible with AP2 and MCP, currently runs in Search's AI Mode and the Gemini app, and its payment feature launched first in the US, with Canada, Australia and the UK having announced they will follow.
50%UnverifiedUCP has the backing of more than twenty companies including Visa, Mastercard, Stripe, Adyen and American Express.
50%UnverifiedOn September 28, 2026, Shopify announced that browser-equipped agents can complete checkout, including using Shop Pay, provided the buyer grants authorization, using the UCP protocol underneath.
50%UnverifiedGoogle is leading the push for UCP (Universal Commerce Protocol), and Visa launched AP2 (Agent Payments Protocol) for agent identities, focusing on the questions of who is paying and whether user authorization has been obtained.
50%UnverifiedGoogle's UCP is an open-source agentic commerce checkout standard and is compatible with AP2.
50%UnverifiedUCP (Universal Commerce Protocol) is a unified standard jointly advanced by Google, Shopify, and Walmart.
50%UnverifiedUCP exposes a merchant's supported payment methods and API endpoints in JSON format through a Merchant Capabilities Manifest file.
50%UnverifiedConverting HTML web pages into structured JSON catalogs can significantly reduce LLM token consumption, with cost differences of up to tens of times.
50%UnverifiedUCP exposes a merchant's supported payment methods and API endpoints in JSON format via a Merchant Capabilities Manifest file stored in the .well-known folder at the website root.
50%UnverifiedUCP adopts a Shared Payment Token mechanism in which the payment service provider returns an encrypted token rather than the raw card number, ensuring that neither the agent nor the merchant can access the user's raw payment information.
50%UnverifiedUCP converts HTML web pages into JSON data that agents can parse efficiently, avoiding the consumption of large numbers of tokens to parse HTML pages.
50%UnverifiedThe Universal Commerce Protocol (UCP) defines how agents initiate, update, complete, and cancel purchases, functioning essentially as a translation layer between agents and merchant APIs.
50%UnverifiedUCP (Universal Commerce Protocol) was launched in January 2026, developed by Google together with Shopify, Etsy, Wayfair, Target and Walmart.
50%