Sam Parsons demonstrates how agentic commerce can connect merchant systems to AI shopping interfaces. The talk compares ChatGPT instant checkout through the Agentic Commerce Protocol, Google AI Mode through the Universal Commerce Protocol and an MCP app that sends users to an external checkout.
Sam Parsons explains how payment credentials are exchanged for tokens before a merchant processes a charge. He describes merchant, amount, currency and expiration restrictions, while showing how existing settlement, refund and chargeback systems remain part of the payment flow.
Sam Parsons contrasts the integration work required by each path. An embedded MCP app lets the merchant design its shopping interface, while the Google AI Mode example relies on product information and checkout endpoints. An external checkout gives the merchant more control over payment methods and the experience, at the cost of taking the user out of the agent interface.
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