AI Agent Payments Explained: How x402, AP2 And Stablecoins Enable Autonomous Commerce
On Sept. 22, Coinbase gave AI trading agents a new skill: buying their own research. An agent can now pay a few cents in USDC (USDC) for an earnings summary, read it and place a stock trade inside limits its owner set. The protocol behind that payment, x402, has processed more than 230 million trans