the agentic payments stack is converging faster than the protocol debates suggest. recent research from Visa and Artemis found card-native standards adding stablecoin support while crypto-native protocols incorporate trust infrastructure from the card world, and their conclusion describes one payment system with two rails. cards carry consumer-sized purchases, stablecoins settle the sub-dollar machine-to-machine flows where fixed fees price cards out, and single tasks mix both rails midstream. settlement standards define how money moves between machines. the governance record, which agent paid, under what limit, with what approval trail, stays with the team operating the agents no matter which rail carries the transaction. ampersend runs that layer on x402 today and the design holds as new rails go live.