eBay Browse API vs Best Buy Products API for AI agents
eBay Browse API is eBay's Buy API for searching live eBay listings by keyword or category and fetching item details. Best Buy Products API is Best Buy's REST API over its product catalog, past and present, alongside Stores, Categories, Reviews and Recommendations APIs.
The short answer
- eBay Browse API: Approved eBay partners who want live new and used eBay listings with affiliate tracking.
- Best Buy Products API: Self-serve access to a large US electronics catalog with live prices and direct add-to-cart links.
Side by side
| eBay Browse API | Best Buy Products API | |
|---|---|---|
| Searches | Live eBay listings by keyword and category (plus image search in some markets), and item details by item ID. | Best Buy's catalog of over a million products, current and discontinued, with pricing, availability, specifications, descriptions and images. |
| Returns | A subset of item details per search hit (more with the EXTENDED field group); full details come from getItem using the item ID. | 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 | An eBay developer account (sandbox is open to anyone); production use of the Buy APIs is for eBay partners and needs an application through the eBay Partner Network, approved by business model. | A developer account and an API key, requested with an email address and activated from the emailed instructions; calls are limited per key. |
| Acting on a result | Affiliate links through the eBay Partner Network (production apps must implement affiliate tracking); eBay member checkout via the separate checkout_session resource needs extra approval. | 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. |
| Limits on keeping or showing results | Not stated on its pages | 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 | 16 eBay marketplaces: AT, AU, BE, CA, CH, DE, ES, FR, GB, HK, IE, IT, NL, PL, SG and US (image search only in US, DE, UK and AU). | BESTBUY.COM (United States); the Stores API covers stores in the US and Puerto Rico. |
| MCP server | No official server listed | 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 eBay Browse API?
An eBay developer account (sandbox is open to anyone); production use of the Buy APIs is for eBay partners and needs an application through the eBay Partner Network, approved by business model.
Is eBay Browse API free?
Its pages listed no free use when we read them on October 15, 2026.
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.
eBay Browse API, read on October 15, 2026:
- developer.ebay.com/api-docs/buy/static/api-browse.html: “Using the Browse API, you can create a rich selection of items for your buyers to browse with keyword and category searches.”
- developer.ebay.com/api-docs/buy/static/api-browse.html: “For each item found, a subset of the item details is returned.”
- developer.ebay.com/api-docs/buy/static/buy-requirements.html: “The use of eBay’s Buy APIs in production is intended for eBay partners only.”
- developer.ebay.com/api-docs/buy/static/buy-requirements.html: “You must apply for production access through the eBay Partner Network.”
- developer.ebay.com/api-docs/buy/static/buy-requirements.html: “Acceptance of applications is based on the proposed business model”
- developer.ebay.com/api-docs/buy/static/buy-requirements.html: “Application must implement affiliate tracking details (needed for revenue share capability)”
- developer.ebay.com/api-docs/buy/static/buy-requirements.html: “To use the checkout_session resource, which supports eBay member checkout, you need approval.”
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.”