Agentic Commerce Protocol (ACP)

An open standard from OpenAI and Stripe, released in 2025, defining how AI agents share product feeds and complete checkouts with merchants.

By Brandon MinaCEO, BrandPilot AIUpdated November 2026

Short answer

The Agentic Commerce Protocol (ACP) is an open standard developed by OpenAI and Stripe, released in 2025, that defines how AI agents and merchants exchange product information and complete purchases. It covers product feeds, checkout flows and secure payment tokens. ACP first powered Instant Checkout in ChatGPT, letting users buy items inside conversations.