AI agents powered by Google, OpenAI, and others are reshaping online commerce. The Universal Commerce Protocol (UCP) and Agentic Commerce Protocol (ACP) enable these agents to discover, recommend, and buy from your store.
The Two Protocols
Backed byGoogle,
Shopify,
Walmart
UCP is a decentralized, open protocol. Stores publish a /.well-known/ucp manifest that AI agents can discover automatically — no platform registration required. Think of it as robots.txt for commerce. Any AI agent (Gemini, Copilot, and more) can read your catalog, check prices, and initiate transactions directly.
Implementation GuideBacked byOpenAI,
Stripe
ACP is a platform-mediated protocol. Merchants register their products with OpenAI and integrate Stripe for payments. ChatGPT Shopping then surfaces your products to users as contextual recommendations, complete with one-click checkout powered by Stripe.
Implementation GuideThe Opportunity
of stores are UCP-compliant today
of commerce could be agent-driven by 2030
more traffic for dual-protocol merchants
Side by Side
| Aspect | UCP | ACP |
|---|---|---|
| Architecture | Decentralized | Platform-mediated |
| Discovery | /.well-known/ucp manifest | Submit to OpenAI |
| Payment | Multiple PSPs | Stripe only |
| Backers | Google, Shopify, Walmart | OpenAI, Stripe |
| AI Agents | Gemini, Copilot | ChatGPT |
Free Tools
Scan your store for UCP compliance. We check for the /.well-known/ucp manifest, structured product data, and agent-friendly endpoints.
Evaluate your store for ACP compatibility. We verify Stripe integration, product feed quality, and OpenAI registration readiness.
Common Questions