The Hearthstone API allows developers to collect comprehensive data on game cards classified by type, faction, search, backs, quality, set, race, and class. It operates under the HTTP methods infrastructure, with a GET request being used to retrieve card information. The main intended users of the Hearthstone API are gamers or game developers who have a direct interest in the Hearthstone game information. Gaming data collected through the Hearthstone API can be used for machine learning applications, such as predicting the best strategy or move based on current gameplay. Alternatives to the Hearthstone API include Fortnite-API, Call of Duty Modern Warfare, RAWG Video Games Database, Free-to-Play Games Database, and Apex Legends.