Google has introduced the Universal Commerce Protocol (UCP), an open-source standard designed to let AI agents manage online shopping for users. This protocol allows AI systems to discover products, compare prices, handle checkout, and manage orders without needing custom integrations for each retailer.
The protocol was developed in collaboration with major retail and payment partners including Shopify, Wayfair, Target, Walmart, Visa, Mastercard, and Stripe. It is designed to work across multiple platforms, making it easier for developers to build AI agents that can interact with different merchants and payment systems seamlessly.
UCP also integrates with complementary standards like the Agent Payments Protocol (AP2) for secure payments, Agent2Agent (A2A) for agent communication, and Model Context Protocol (MCP) for sharing context between AI systems. This makes the ecosystem more secure and interoperable.
Industry experts see UCP as a key step toward AI-driven commerce, where smart assistants could become the main interface for online shopping, similar to how mobile apps transformed e-commerce in the past decade.
For users, this means AI assistants like Google’s Gemini app or AI Mode in Search could soon handle the full shopping process, from finding products to completing payments, without leaving Google’s interface. Google Pay will handle transactions initially, with other payment systems planned in the future. Retailers remain the merchant of record, retaining control over data and order management.
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