ACP and UDP Directory

What is the meaning of agentic commerce?

Agentic commerce refers to AI systems that act on behalf of users to discover products, compare deals, negotiate prices, and complete purchases — often within chatbot or conversational interfaces. Instead of browsing websites manually, a consumer describes what they want and an AI agent handles the research, selection, and transaction.

How is ACP different from traditional checkout?

Instead of redirecting users to a webpage, ACP uses signed JSON messages to create and confirm orders directly in conversational interfaces. The merchant backend still controls pricing, inventory, and risk checks — but the buyer interacts through a chat window or app.

What is the difference between MCP and UCP?

MCP (Model Context Protocol) is an interoperability standard developed by Anthropic that allows AI agents and systems to share context, intent, and data. It defines how an AI model connects to external tools, databases, and APIs — acting as the "plumbing" for agent capabilities.

How do you get your products listed on ChatGPT?

Generate a product feed (CSV, TSV, JSON, or XML) containing: ID, title, description, price, inventory, shipping options, and flags such as enable_search and enable_checkout. Feeds should update every 15 minutes. Implement ACP endpoints: create, update, complete, cancel — secured with HMAC + HTTPS. Support delegated payment tokens (Stripe SPT or compatible).

Do I have to use Stripe?

No. Stripe built the first reference implementation, but ACP works with any provider that supports delegated payment tokens. Merchants can continue using existing processors or PSPs by adopting the Delegated Payments Spec.