Agentic Commerce Protocol (ACP)

Stripe has described an Agentic Commerce Protocol alongside MPP and x402 support. zFinia files it as a named commerce interface, not as a verified settlement census.

Problem: Describe how agents buy from merchants in incumbent commerce stacks, overlapping with payment rails such as MPP and x402.
How payment or discovery works: Public coverage currently comes from Stripe’s agentic-commerce documentation cluster. zFinia treats ACP as overlapping vocabulary with MPP/x402, not as a synonym.
Maintainers: Stripe
Networks: Stripe-described merchant stack
Evidence of adoption: Named in Stripe’s 18 March 2026 machine-payments documentation. Independent protocol specification coverage remains thin on this desk.
Last verified by zFinia: 7 September 2026

Record exists because the name is in a primary Stripe source. It is not a claim that ACP is the market standard.

Official documentation · Primary source

Related: mpp, x402

Related intelligence

Editorial

TIER_A · company move · Public record

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.

Machine Payments Protocol (MPP)x402 Agentic Commerce Protocol (ACP)

Event 18 March 2026 · source 18 March 2026 · zFinia published 7 September 2026 · retrospective