AI agents initiate 14M transfers through x402 protocol, led by Base

AI agents have initiated 14 million transfers through the x402 protocol over the past 30 days, a signal that machine-to-machine payments are moving from theoretical curiosity to measurable infrastructure. The protocol, which piggybacks on the long-dormant HTTP 402 “Payment Required” status code, has turned that dusty web standard into a live payment rail, and Coinbase’s Layer-2 chain Base is where most of the action is happening. The broader x402 ecosystem is even larger than that 14 million figure suggests. Across all participants, the protocol has processed roughly 75 million transactions and $24 million in volume over the last 30 days, with an average payment hovering around $0.32. These are not humans buying coffee. These are AI agents paying for API calls, compute resources, data feeds, and content, automatically, without anyone clicking “confirm.” How a forgotten error code became a payment protocol Every web developer has encountered the HTTP 402 status code. It was baked into the original HTTP specification back in the 1990s as a placeholder for future digital payment systems that never materialized. Coinbase picked up that unfinished business and built x402, an open standa...