// E_COMMERCE
Google and OpenAI just released competing protocols that will determine which products AI recommends — and which it can sell directly. Here's what you need to know.
In January 2026, something significant happened that most e-commerce brands missed: Google announced the Universal Commerce Protocol (UCP) at NRF, and OpenAI quietly expanded its Agentic Commerce Protocol (ACP) to more merchants.
These aren't just technical announcements. They're the infrastructure layer that will determine which products AI recommends — and which ones AI can actually sell on your behalf.
If you're an e-commerce brand wondering why your products aren't showing up in ChatGPT's shopping recommendations or Google's AI Mode, this is probably why.
// AGENTIC_COMMERCE
Before we dive into the protocols, let's clarify what "agentic commerce" means.
Traditional e-commerce: Customer searches → browses → adds to cart → checks out.
Agentic commerce: Customer tells AI what they want → AI finds options → AI handles checkout → done.
The AI agent acts on behalf of the customer, completing the entire shopping journey without the customer ever visiting your website. This is already happening in ChatGPT, Google's AI Mode, and Perplexity.
The Stakes
Morgan Stanley predicts nearly half of online shoppers will use AI agents by 2030. Gartner predicts 90% of B2B buying will be AI-agent intermediated by 2028. The shift is happening faster than most brands realize.
// GOOGLE_UCP
UCP is Google's open-source standard for agentic commerce. Announced at NRF 2026, it's designed to let AI agents complete the entire shopping journey — from discovery to checkout to post-purchase support.
When someone asks Google AI Mode "find me running shoes for flat feet under $150," UCP enables:
If your product feed isn't optimized for UCP, you're invisible to this entire flow.
// OPENAI_ACP
ACP is OpenAI's cross-platform protocol enabling shopping and payments within ChatGPT and other AI assistants. It's maintained by OpenAI and Stripe.
When someone asks ChatGPT "I need a gift for my sister who likes skincare," ACP enables:
Current partners include Target, Instacart, DoorDash, Skims, and Glossier.
// COMPARISON
| Aspect | UCP (Google) | ACP (OpenAI) |
|---|---|---|
| Philosophy | "Android approach" — open, ecosystem-first | "Apple approach" — polished, infrastructure-first |
| Primary Platform | Google AI Mode, Gemini | ChatGPT |
| Feed Source | Google Merchant Center | ACP Product Feed or Shopify/Etsy |
| Payment Integration | Google Pay + multiple processors | Stripe only |
| Open Source? | Yes | No (OpenAI/Stripe maintained) |
| Auto-Eligible | Existing Merchant Center users | Shopify and Etsy merchants |
According to Checkout.com's analysis, both protocols will coexist — serving different moments of intent across different platforms. Smart brands will optimize for both.
// AEO_IMPLICATIONS
Here's the critical insight: AEO for e-commerce is no longer just about getting cited. It's about being transactable.
If AI can't complete a purchase through your product, it will recommend a competitor whose product it can transact.
Layer 1: Discovery (Traditional AEO)
Layer 2: Comparison (Feed Optimization)
Layer 3: Transaction (Protocol Enablement)
Miss any layer, and you're leaving money on the table.
// ACTION_ITEMS
// BOTTOM_LINE
UCP and ACP aren't just technical protocols — they're the new distribution layer for e-commerce. Brands that integrate early will capture demand that competitors can't even see.
The shift from "getting found" to "being transactable" is the biggest change in e-commerce since mobile.
And it's happening now.
Our Answer Architecture program for e-commerce includes feed optimization, schema implementation, and UCP/ACP readiness assessment. See who AI recommends instead of you — free.
Learn About E-commerce AEO