Building safe payment infrastructure for machine-to-machine commerce

Agents are a new class of buyer, but the infrastructure for them to transact headlessly barely exists yet. This talk walks through what it actually takes to make a machine payment work: how an agent discovers what services exist, how HTTP 402 lets a server return a payment challenge the agent can settle without a human in the loop, and how the seller gets a receipt they can trust. Whether you are building an agent framework or adding machine payments to an API or MCP server, you will leave with concrete patterns for the headless commerce stack.