{
  "dataset": "glossary",
  "record": {
    "id": "acp",
    "term": "Agentic Commerce Protocol (ACP)",
    "category": "commerce",
    "short_def": "An open standard, maintained by OpenAI and Stripe, that connects buyers, their AI agents and merchants so a purchase can complete inside a conversation.",
    "long_def": "ACP defines an interaction model for in-conversation checkout — the standard behind ChatGPT's Instant Checkout. Maintained jointly by OpenAI and Stripe as Founding Maintainers under the Apache 2.0 license, it uses date-based (YYYY-MM-DD) versioning, with OpenAI and Stripe providing the first reference implementations.",
    "see_also": [
      "agentic-commerce",
      "x402",
      "ap2"
    ],
    "etymology_origin": "Introduced alongside ChatGPT Instant Checkout (29 September 2025); the specification is maintained by OpenAI and Stripe as Founding Maintainers under Apache 2.0, with date-based (YYYY-MM-DD) versioning.",
    "related_to": [
      "agentic-commerce",
      "x402",
      "ap2",
      "agent-as-buyer"
    ],
    "contrast_with": "Unlike AP2, a payment-authorization protocol, ACP is the broader checkout interaction model between an agent and a merchant — it governs how the purchase happens in-conversation, and can settle through underlying payment rails.",
    "example": "OpenAI and Stripe launched the Agentic Commerce Protocol with ChatGPT Instant Checkout on 29 September 2025, going live with Etsy on launch day.",
    "source": "https://github.com/agentic-commerce-protocol/agentic-commerce-protocol",
    "status": "emerging",
    "why_it_matters": "ACP is how a merchant exposes its catalog and checkout to ChatGPT and other agents directly; speaking it is the path to selling inside an AI conversation.",
    "sameAs": [],
    "bridge_entity": "protocols/payments/acp",
    "last_verified": "2026-06-15",
    "md_twin": "/glossary/acp.md"
  }
}