Agentic commerce is a form of online shopping where an AI agent, given a goal and spending limits by a person, handles discovery, comparison, and checkout itself. The agent does not just suggest products, it authorizes payment and produces an order, using open standards like UCP or ACP to talk to a merchant's systems.
How agentic commerce actually works
A person gives an agent a goal in plain language, something like "find me running shoes for trail use, under $150, delivered by Friday," along with limits on price and payment method. From there, the agent handles the rest of the sequence itself:
- Discovery. The agent queries merchants or marketplaces for products that match the request.
- Comparison. It evaluates the options it finds against the person's stated constraints, price, delivery time, availability.
- Authorization. For a routine purchase within the limits it was given, the agent proceeds. For a higher-value or ambiguous one, it typically checks back with the person first.
- Checkout and fulfillment. The agent completes payment through a pre-authorized method and triggers the order.
The distinction that matters is the last two steps. A recommendation engine or a shopping chatbot can do discovery and comparison. What makes something agentic commerce specifically is that the agent also transacts: it moves money and produces an order, not just an answer.
Why this is happening now, in 2026
Three consumer surfaces went live with agent-driven shopping in a short window: ChatGPT added Instant Checkout for US users, Google's AI Mode added agentic checkout with early partners including Wayfair, Chewy, and Etsy, and Amazon's Rufus and Perplexity's Comet browser both added agent-initiated purchasing. The interest is not hypothetical either.
The open standards behind it: UCP and ACP
For an agent to reliably transact with a merchant it has never talked to before, both sides need to speak the same structured, machine-readable language. Rather than every merchant building a custom integration for every AI agent, two open standards emerged to do this at scale, backed by different companies.
| Standard | Universal Commerce Protocol (UCP) | Agentic Commerce Protocol (ACP) |
|---|---|---|
| Announced | January 11, 2026 | September 29, 2025 |
| Led by | Google, with Shopify, Etsy, Wayfair, Target, and Walmart as co-developers | Stripe, OpenAI, and Meta |
| What it defines | How an agent discovers a merchant's services, capabilities, and payment handlers via a manifest file | How an agent runs checkout against a merchant using a delegated, narrowly scoped payment token |
| Where it shows up | Google AI Mode and other UCP-compatible agents | ChatGPT and other ACP-compatible agents |
A merchant is not limited to picking one. Since both are open standards published as specifications, a store can implement UCP, ACP, or both, depending on which agents its customers actually use.
What it means for merchants
An AI agent cannot read a webpage the way a person does. It needs product, pricing, and checkout information in a structured format it can query directly, and it will generally skip a merchant whose delivery windows, pricing, or checkout process are ambiguous rather than guess. That makes being machine-legible, not just persuasive to humans, a real factor in whether an agent selects a store at all.
For a store built on UCP specifically, that structure takes the form of a manifest file published at /.well-known/ucp, listing what services the store offers, what payment methods it accepts, and how its checkout works. If you want to see whether a specific site already publishes one, or check your own before launch, that is exactly what our UCP checker and manifest validator do.
See UCP in practice
Check whether a live site publishes a valid UCP manifest, or paste your own manifest to validate it before you deploy.
Frequently asked questions
No. A chatbot answers questions and makes suggestions, but a person still has to click through and pay. In agentic commerce, the AI agent completes the transaction itself, within limits the person set in advance, so it actually moves money and produces an order.
Both are open standards that let AI agents transact with merchants, but they come from different groups. UCP was announced by Google in January 2026 and co-developed with Shopify, Etsy, Wayfair, Target, and Walmart. ACP launched in September 2025, co-developed by Stripe, OpenAI, and Meta, and powers agent checkout inside ChatGPT. A merchant can support either standard, or both.
Not necessarily. Supporting a standard like UCP or ACP typically means publishing a manifest file that describes your services, capabilities, and payment options in a structured, machine-readable format, rather than rebuilding your storefront itself.