Blizzard, makers of the popular online MMORPG World of Warcraft, provide this API for users who are interested in gathering game statistics and data. Users can gather data by categories such as realm, profile, item, arena team, and more.
This open API is created as a service to the World of Warcraft community. There are no signup requirements or fees for using this REST-based API. Users are limited to 3,000 requests per day, however this limit can be exceeded for those who register an application. Applications can be registered at firstname.lastname@example.org.