Agentic commerce is online commerce in which autonomous AI agents — ChatGPT, Gemini, Perplexity, or purpose-built shopping bots — carry out part or all of the purchase journey on a user's behalf: discovering products, comparing options, and increasingly completing checkout itself. The customer arriving at your store is no longer always a person scrolling a storefront; often it is software that reads structured data, weighs specs and review sentiment, and can now pay through open standards like OpenAI's Agentic Commerce Protocol (ACP) and Google's Agent Payments Protocol (AP2).
Key takeaways
- Agentic commerce splits shopping into three delegable stages — discovery, evaluation, execution — and AI agents can now handle all three end to end.
- The infrastructure shipped in late 2025: ChatGPT's Instant Checkout (built on ACP with Stripe) and Google's AP2, launched with 60+ payment partners, moved agent-initiated purchases from demo to production.
- Agents are rational buyers. They parse structured data, prices, availability, and review sentiment; lifestyle photography and banner ads are invisible to them.
- Getting agent-ready is a GEO problem: crawlable pages, schema.org Product markup, llms.txt, and accurate feeds decide whether your products make it onto the AI shopping shelf.
- Readiness is measurable — product-card activation, Share of Model, and AIGVR replace sessions and CTR as the KPIs that predict agent-driven revenue.
How agentic commerce works
Every purchase an agent touches passes through some combination of three stages.
Discovery. A user asks a natural-language question — "find me an espresso machine under $500 that heats up in under five seconds" — and the agent fans it out into dozens of sub-queries, reads product pages, reviews, and comparison articles, then returns a shortlist. This is where grounding queries and AI citations decide which brands enter the consideration set at all.
Evaluation. The agent compares specs, prices, shipping terms, and aggregated review sentiment across candidates in seconds. It does not skim; it reads everything, and it penalizes vague or inconsistent data. A product page that says $499 while the feed says $529 reads as unreliable, and unreliable products get dropped.
Execution. This stage went live in September 2025 when OpenAI launched Instant Checkout in ChatGPT, first with US Etsy sellers and then with Shopify merchants such as Glossier, SKIMS, and Vuori. It runs on the Agentic Commerce Protocol, co-developed with Stripe and open-sourced; Stripe's Shared Payment Token lets ChatGPT initiate a payment without exposing the buyer's card details, scoped to one merchant and one cart total. Days earlier, Google announced with more than 60 partners including Mastercard, PayPal, and American Express, using cryptographically signed mandates to prove what the user actually authorized. For deeper integrations, brands can also expose inventory and order APIs to agents directly through the .
