In this work, we propose, implement, and evaluate a Network as a Service (NaaS) API. This API abstracts the network and devices operations to simplify their management, and to provide functionalities offered by the SDN architecture. We focus on a particular application: content distribution over an SDN network. More specifically, we have implemented an API to represent the entire network and to place a copy of the most popular content in the caching unit close to the client in order to balance the load and increase the performance of the network. The goal of this work is to prove that content distribution and network management can both be done without radically modifying the network architecture, therefore we implemented a proof-of-concept leveraging OpenFlow controllers, an HTTP proxy and a RESTful API.