Amazon Creators API vs eBay Browse API for AI agents
Amazon Creators API is Amazon's REST product catalog API for Amazon Associates, which replaced the deprecated Product Advertising API 5.0. eBay Browse API is eBay's Buy API for searching live eBay listings by keyword or category and fetching item details.
The short answer
- Amazon Creators API: Affiliate publishers who already earn Amazon Associates sales and want live Amazon catalog data with tracked links.
- eBay Browse API: Approved eBay partners who want live new and used eBay listings with affiliate tracking.
Side by side
| Amazon Creators API | eBay Browse API | |
|---|---|---|
| Searches | Amazon's product catalog by keyword, filters and browse node (SearchItems), plus item lookup by ASIN, product variations and the category tree. | Live eBay listings by keyword and category (plus image search in some markets), and item details by item ID. |
| Returns | Product details for items, their variations and browse-node (category) information; GetItems takes up to 10 item IDs per call. | A subset of item details per search hit (more with the EXTENDED field group); full details come from getItem using the item ID. |
| Before the first call | An approved Amazon Associates account for the target marketplace with at least 10 qualifying sales in the past 30 days, then registration for API access in Associates Central and generated credentials (OAuth 2.0 client credentials). | 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. |
| Acting on a result | Affiliate links: results are tied to your Associates Partner Tag, and buying happens on Amazon; the Associates rules forbid you placing orders on an Amazon site. | 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. |
| Limits on keeping or showing results | Product data other than images may be cached for up to 24 hours; images may not be stored (image links up to 24 hours); ASINs may be kept indefinitely. Shown prices need a date/time stamp. | Not stated on its pages |
| AI in its terms | Program content may not be used to develop or improve large language, multimodal or machine-learning models. Separate Agent Terms require any agent using the content to identify itself in every request and not conceal that it is an agent. | Not stated on its pages |
| Coverage | Amazon marketplaces worldwide; credentials work across marketplaces, but API access must be approved in each region and needs a Partner Tag for that marketplace. | 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). |
| 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 Amazon Creators API?
An approved Amazon Associates account for the target marketplace with at least 10 qualifying sales in the past 30 days, then registration for API access in Associates Central and generated credentials (OAuth 2.0 client credentials).
Is Amazon Creators API free?
Its pages listed no free use when we read them on October 15, 2026.
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.
Sources
Every line about another company comes from its own pages. Prices and terms change, so check the source before you rely on one.
Amazon Creators API, read on October 15, 2026:
- affiliate-program.amazon.com/creatorsapi/docs/en-us/paapiv5-deprecation: “The Amazon Product Advertising API 5.0 (PA-API 5) has been deprecated and is being replaced by the Creators API.”
- affiliate-program.amazon.com/creatorsapi/docs/en-us/paapiv5-deprecation: “Product Advertising API is deprecated. Please migrate to Creators API using the migration guide at”
- affiliate-program.amazon.com/creatorsapi/docs/en-us/introduction: “The Creators API is a REST-based API that provides programmatic access to Amazon's product catalog data”
- affiliate-program.amazon.com/creatorsapi/docs/en-us/introduction: “Search for products using keywords, filters, and browse nodes”
- affiliate-program.amazon.com/creatorsapi/docs/en-us/introduction: “Have at least 10 qualifying sales within the past 30 days to access the PA API through the Creators API”
- affiliate-program.amazon.com/creatorsapi/docs/en-us/introduction: “Be enrolled in the Amazon Associates program for your target marketplace”
- affiliate-program.amazon.com/creatorsapi/docs/en-us/frequently-asked-questions: “You will need a valid Partner Tag for the target marketplace and Creators API access approved in that region.”
- affiliate-program.amazon.com/creatorsapi/docs/en-us/frequently-asked-questions: “Yes. Your credentials work globally across all marketplaces.”
- affiliate-program.amazon.com/help/operating/policies: “You may store other Product Advertising Content that does not consist of images for caching purposes for up to 24 hours”
- affiliate-program.amazon.com/help/operating/policies: “you may store individual Amazon Standard Identification Numbers (ASINs) for an indefinite period”
- affiliate-program.amazon.com/help/operating/policies: “You will include a date/time stamp adjacent to your display of pricing or availability information”
- affiliate-program.amazon.com/help/operating/policies: “You will not make any orders or engage in other transactions of any kind on an Amazon Site”
- affiliate-program.amazon.com/help/operating/policies: “develop or improve large language or multimodal models, machine learning models or related technology”
- affiliate-program.amazon.com/help/operating/policies: “No Agent may access, use, or interact with Program Content unless, at all times, it identifies itself”
- affiliate-program.amazon.com/help/operating/policies: “Not conceal or obfuscate that any access, use, or interactions are from an Agent”
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.”