Answer Set Programming (ASP) is a declarative programming paradigm that has been successfully used in a number of industry-level applications also thanks to the availability of development tools. REpresentation State Transfer (REST) Web Services recently became a common and widely-used tool for enterprise applications. A service- oriented infrastructure for ASP is not available, and this results in an obstacle for the adoption of ASP-based solutions. We address this issue by introducing a REST-based framework for ASP. Moreover, we report on the usage of the framework for developing a service of surveillance for photovoltaic plants.