Agent commerce protocols proliferate beyond crypto-native stacks

Stripe, Visa, and other incumbent payments and model vendors published overlapping agent-commerce interfaces through 2025–2026, including Stripe's Agentic Commerce Protocol with MPP and x402 support and Visa's Intelligent Commerce, according to a zFinia retrospective published 7 September 2026. zFinia said the overlapping vocabulary creates a classification problem for buyers and a coverage obligation for itself, and that its editorial work is mapping substitutes and complements rather than treating the machine economy as a single protocol.

TIER A · company move Agent commerce protocols proliferate beyond crypto-native stacks Through 2025–2026, incumbent payments and model vendors published overlapping agent-commerce interfaces. Stripe describes an Agentic Commerce Protocol alongside MPP and x402 support. Visa shipped Intelligent Commerce. The overlapping vocabulary is a classification problem for buyers and a coverage obligation for zFinia. Event 18 March 2026 · source 18 March 2026 · zFinia published 7 September 2026 · retrospective Why it matters The machine economy is not one protocol. Editorial work is mapping substitutes and complements without pretending they are the same rail.