Best Buy Products API vs OpenAI Agentic Commerce Protocol for AI agents
Best Buy Products API is Best Buy's REST API over its product catalog, past and present, alongside Stores, Categories, Reviews and Recommendations APIs. OpenAI Agentic Commerce Protocol is an open checkout protocol (with Stripe) and OpenAI's specs for merchants to send product feeds to ChatGPT and accept orders from it.
The short answer
- Best Buy Products API: Self-serve access to a large US electronics catalog with live prices and direct add-to-cart links.
- OpenAI Agentic Commerce Protocol: Merchants who want their products indexed and sold inside ChatGPT; it gives other agents no product catalog to search.
Side by side
| Best Buy Products API | OpenAI Agentic Commerce Protocol | |
|---|---|---|
| Searches | Best Buy's catalog of over a million products, current and discontinued, with pricing, availability, specifications, descriptions and images. | – |
| Returns | Product records with sale and regular price, a BESTBUY.COM product page URL and an add-to-cart URL, plus specs and images. | – |
| Before the first call | A developer account and an API key, requested with an email address and activated from the emailed instructions; calls are limited per key. | For merchants: approval to onboard product feeds into ChatGPT (application at chatgpt.com/merchants), then a product feed and checkout endpoints that ChatGPT calls. |
| Acting on a result | Buy link: each product has a BESTBUY.COM product URL and an addToCartUrl; checkout through the separate Commerce Gateway API needs Best Buy's pre-approval. | Checkout through the protocol: the merchant implements checkout-session endpoints that an agent calls, and stays the seller; OpenAI is not the merchant of record. |
| Limits on keeping or showing results | Content may be cached only temporarily, for no more than 72 hours, and only to speed up display; content must be attributed to Best Buy. | – |
| Coverage | BESTBUY.COM (United States); the Stores API covers stores in the US and Puerto Rico. | – |
| MCP server | No official server listed | – |
Where Openpath fits
Openpath has no products listed yet. Sellers can list a product on Openpath today, free, and agents will find it through the same search as jobs and businesses. Get listed.
Questions people ask
What do I need before I can use Best Buy Products API?
A developer account and an API key, requested with an email address and activated from the emailed instructions; calls are limited per key.
Is Best Buy Products API free?
Its pages listed no free use when we read them on October 15, 2026.
Sources
Every line about another company comes from its own pages. Prices and terms change, so check the source before you rely on one.
Best Buy Products API, read on October 15, 2026:
- bestbuyapis.github.io/api-documentation: “a simple, REST-based interface for our entire product catalog, past and present”
- bestbuyapis.github.io/api-documentation: “It's easy. Just visit GET API Key and sign up with your email address.”
- bestbuyapis.github.io/api-documentation: “URL to BESTBUY.COM with item in cart”
- bestbuyapis.github.io/api-documentation: “URL to BESTBUY.COM product detail page”
- bestbuyapis.github.io/api-documentation: “Current item selling price”
- developer.bestbuy.com/legal: “To use the Service, you must create a developer account by submitting a completed registration form”
- developer.bestbuy.com/legal: “Best Buy limits the number of calls that can be made using each assigned API Key during a given time period.”
- developer.bestbuy.com/legal: “store or cache any Content except on a temporary basis not to exceed seventy-two (72) hours”
- developer.bestbuy.com/legal: “You must clearly and conspicuously attribute the source of all Content as received from Best Buy.”
- developer.bestbuy.com/legal: “Use of the Commerce Gateway API requires our pre-approval and may not be available to everyone.”
OpenAI Agentic Commerce Protocol, read on October 15, 2026:
- developers.openai.com/commerce/guides/get-started: “Onboarding product feeds in ChatGPT is currently available to approved partners.”
- developers.openai.com/commerce/guides/key-concepts: “OpenAI is not the merchant of record in the Agentic Commerce Protocol.”
- agenticcommerce.dev: “Stripe and OpenAI developed the Agentic Commerce Protocol.”
- agenticcommerce.dev: “Any AI agent can call an ACP-enabled checkout.”