Yapta is a site that tracks travel deals for users, and also helps them to get a refund should the price of their reservation fall after they've booked it. The Yapta API release is in beta, and developers must go through an application process to gain access, so the current public API documentation is more of a tease.

During the beta phase, however, Yapta openly invites API users to interface with its developers. Yapta is a technically robust API that takes information from multiple disparate data sources and then offers it up to the API user. For example, Yapta outsources travel reservation searching to Kayak, and it also uses OAuth to protect user credentials. There may be an open source implementation of the Yapta API on github within the next several months. The offering has already generated a lot of excitement since Yapta's price tracking API is the first of its kind openly available in the travel industry.