Protocols

10 Agentic Commerce Protocols, Zero Interop: The 2026 Guide

There are ten active agentic commerce protocols in the market, and none of them talk to each other. That's what a retailer walks into when they ask their engineering team, "so, how do we get our catalog into AI shopping?" The answer used to be "pick ACP." In April 2026, it is a spreadsheet. TL;DR: Ten agentic commerce protocols are live or piloting in Q2 2026 with zero interoperability. Betting on the wrong one locks you out of specific AI surfaces. This guide sorts them by function (di