Eventful is the world's largest collection of events, taking place in local markets throughout the world, from concerts and sports to singles events and political rallies. Eventful.com is built upon a unique, open platform that enables partners and web applications to leverage Eventful's data, features and functionality via the Eventful API. The Eventful API provides access to the entire site database enabling developers to integrate it and the functionality of the Eventful platform into web applications. Common API tasks include event and venue search. The API uses RESTful calls and responses are formatted in either XML, JSON or YAML.