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Agentic Commerce Protocol (ACP)

OpenAI-Stripe open standard connecting buyers, agents, and merchants.

ProtocolsACP4 services ▸

What Agentic Commerce Protocol (ACP) offers

Agentic Checkout specFree (Apache 2.0)

REST/MCP interface for agents to create, update, and complete merchant checkout sessions with carts

Delegated Payments spec

Secure payment-token handoff between buyer, agent, and merchant; Stripe Shared Payment Token is first PSP

Product feed spec

Standardized catalog feed so AI agents can discover and browse merchant products

ChatGPT Instant Checkout backbone

OpenAI/Stripe-maintained open standard powering in-chat purchases, adoptable by any agent surface