Towards an open, collaborative REST API for recommender systems.

Recommender Systems aim to suggest relevant items to users, however, for this they need to properly obtain/serve different types of data from/to the users of such systems. In this work, we propose and show an example implementation for a common REST API focused on Recommender Systems. This API meets the most typical requirements faced by Recommender Systems practitioners while, at the same time, is open and flexible to be extended, based on the feedback from the community. We also present a Web client that demonstrates the functionalities of the proposed API.