Am I Ready for Agents?

ACP (Agentic Commerce Protocol)

In short

ACP (Agentic Commerce Protocol) is the route behind ChatGPT's commerce features. Read on in Whether to accept agent payments. The neighbouring terms are UCP (Universal Commerce Protocol) and x402. OpenAI's docs say building with ACP is open to all, while Instant Checkout is available to approved partners.

Definition

An open standard from OpenAI and Stripe for agents to check out with merchants; the basis of ChatGPT's commerce features.

A dated example

  • Read 4 Nov 2026

    OpenAI's docs say building with ACP is open to all, while Instant Checkout is available to approved partners.

    OpenAI commerce docs: key concepts, read 4 Nov 2026

Where it matters

It is the route behind ChatGPT's commerce features.

  • UCP (Universal Commerce Protocol)Google's open standard, built with retailers and Shopify, that lets AI surfaces such as AI Mode and Gemini check out with a merchant.
  • x402A way for a site to ask for payment inside the web request itself, so an agent can pay a small amount and retry without an account.

Sources

  1. OpenAI commerce docs: key concepts (developers.openai.com/commerce/guides/key-concepts), read 4 Nov 2026.

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