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How UCP + MCP Fit Together for Agentic Commerce
“Let curiosity be your compass and effort your map.” These words by Chimamanda Ngozi Adichie offer more than poetic wisdom — they frame a mindset essential for thriving in today’s world of rapid change. In both learning and innovation, curiosity drives us to ask better questions, while systematic effort helps us build efficient paths toward progress. Whether you’re rethinking how AI can shop on your behalf or trying to promote your work more effectively, the key isn’t just exploration — it’s purposeful exploration. This article follows that spirit: combining curiosity with clear steps to explore powerful, emerging protocols like UCP and MCP that are reshaping ecommerce and AI.
Universal Commerce Protocol (UCP) and Model Context Protocol (MCP) are two emerging standards that together enable AI agents to interact with merchants in a standardized way. UCP defines what shopping actions an agent can perform (the capabilities), and MCP defines how those actions are invoked as remote calls (the tool invocation protocol). This article explains both UCP and MCP, how they complement each other, and demonstrates a proof-of-concept where an agent uses MCP to perform a UCP-powered checkout on a sample merchant server.
