The two largest U.S. card networks, Visa and Mastercard, have each developed their own protocols for agentic commerce. An October McKinsey report on agentic commerce pegged the retail sales opportunity as high as $1 trillion for goods in the U.S. by 2030, and up to $5 trillion globally. Payment process upheavalThere’s abundant work to do to first enable agentic transactions with a human consumer still giving purchase approval. By year’s end Gr4vy expects to discard half of the work it’s doing on implementing agentic commerce protocols because some of them won’t work, he added. Another big question for every merchant engaging with agentic commerce: How is inventory exposed to agentic commerce?