Executive summary Agentic commerce has moved from sandbox demonstrations into production payment flows. The industry is now debating which agent payments protocol will prevail: OpenAI and Stripe’s ACP, Google’s AP2, Visa’s Trusted Agent Protocol, Mastercard Agent Pay, EMVCo’s emerging framework or the Agent Payments Group’s MPP. That debate matters to infrastructure providers. It is not the most urgent question for merchants. The immediate issue is that AI agents are already