The Quantcast Android SDK by Kevin Smith interacts with the API to access advertising and demographic measurement features. It allows to understand audiences, compare & compete, attract advertising, and improve campaign performance.
The Mobpartner API allows this global affiliate marketing platform to monetize you unfilled traffic in over 200 countries. Working with advertisers, marketers and publishers, Mobpartner has both REST and S2S HTTP APIs. Mobpartner uses as CPA model that allows for CPS, CPL and CPI actions. Responses are XML, JSON and XHTML, or directly through an XML feed.
Facebook created an API to fight abusive political ads. The Ad Archive API is being tested by a select group of researchers, academics, and publishers. Through the API, developers gain access to ad data including the ad creator, content, recipient, impressions, target demographic and more.
Changes to an API Terms of Service (TOS) are an inevitable part of API operations, and as API owners work to evolve their APIs, changes can often be at odds with the community. As some API seem to struggle with the best way to update, Google's approach appears to be more balanced. Google just updated its TOS for Google Earth and its popular Google Maps API.