Coinbase announced Thursday that businesses can now accept USDC payments from AI agents over something called the x402 standard, plus AI trading tools and a developer kit for what they call the "agentic economy." Coinbase says agent traffic already exceeds human traffic on its documentation pages. The button was always just an interface for intent. If the agent holds the keys and signs the transaction, the human is a step removed from custody of his own money, trusting the agent's judgment the way he once trusted a bank's. Convenient, probably. Still a trusted third party, just a quieter one.