Commision Junction [ CJ ] has launched several APIs, which are branded as Web Services. The official Press release is here, & the developer site is located here.
From CJ:
The first of the Web Services releases include the following Application Programming Interfaces (APIs):
Product Catalog Access – This API offers real-time access to the Product Catalog database. Using it, you can find a product or group of products to display on your site since the API enables keyword searches as well as item specific searches by UPC, manufacturer, model number, advertiser, SKU and more.
Link Search Functionality – Publishers can use this API to search for links through a SOAP interface using a set of parameters to return link results that include information like their relationship status and link code that can be used to capture publisher referrals. In addition, you can find the perfect link for display on your site using search options that are very similar to those available via the CJ Account Manager™, including searching by link type and size, advertiser, language and other link attributes.
Advertiser Search Functionality – This API allows publishers to search for advertisers through a SOAP interface using a set of parameters to return advertiser results that include information such as their relationship status and program terms with the advertiser.