Read the specification at the capability level
OpenAI documents the Agentic Commerce Protocol and a checkout specification for exchanging checkout state with merchants. The Universal Commerce Protocol describes a framework for discovering and negotiating commerce capabilities. These documents describe interfaces; they do not prove that every merchant or market has a live integration.
| Topic | What to verify |
|---|---|
| Discovery | How product and merchant information is made available. |
| Checkout | Session state, final totals, eligibility and customer authorization. |
| Payments | Supported payment methods, provider responsibilities and failure handling. |
| After purchase | Order events, customer service, delivery and returns. |
A feed and a transaction are different projects
OpenAI’s product-feed documentation distinguishes product discovery from separately enabled checkout. Treat feed preparation, merchant onboarding and transactional integration as distinct workstreams with their own acceptance criteria.
Before committing engineering time, verify the target platform, market, access requirements, supported capabilities and current specification version. An attractive demo may depend on conditions that do not apply to your business.
Prepare the parts that stay useful
Accurate product identity, reliable offer information and clear operational ownership are useful across integration choices. Map the systems that hold prices, stock, taxes, shipping and order state. Decide which system is authoritative and how conflicts are resolved.
- ↗Write an explicit customer-authorization and error-recovery journey.
- ↗Test retries, duplicate requests and changed totals in a safe integration environment.
- ↗Revisit official documentation before every implementation decision.
Original documentation and published evidence. The working approach and priorities on this page are editorial recommendations, not platform guarantees. Reviewed 7 November 2026.
OpenAI · Commerce documentation↗OpenAI · Checkout specification↗Universal Commerce Protocol · Specification↗OpenAI · Product feed specification↗