This paper discusses the adoption of a Model Based approach in the Web of Things development as a way to simplify the task. A set of primitives is introduced to handle the http protocol at the model level directly, so that application designers need not know programming and networking details. A Model Based Integrated Development Environment, TaskScript, has been extended with such primitives: first results are reported, demonstrating the feasibility and effectiveness of the approach, particularly with OS-less systems using low cost and low energy consumption 8-bit microcontrollers: real case applications have been effectively developed in matter of hours.