Yahoo's Social API suite brings the power of the Yahoo network and all its inherent social connections to the table. The social suite comprises the Social Directory and Contacts APIs. These APIs open up user data and connections across a variety of experiences.
Social Directory is the core social platform that manages users' Yahoo-wide social identity and relationship graph. Social Directory has two major APIs. The Profiles API provides access to users' social identity - their profile, interests, contact info, age, gender, location, photo etc. The Connections API provides access to users' social graph on Yahoo. Learn More.
The Contacts API provides access to the billions of social relationships that exist in the Yahoo Address Book. The Yahoo Address Book consists of the contacts that a user has entered into their Address Book from Yahoo Mail, Yahoo Messenger, Yahoo Mobile and other third party applications. Learn More.