The SkyServer Web Service (SkyServerWS), a C# ASP.NET web platform, implements a REST API that serves data and imaging from the Sloan Digital Sky Survey (SDSS).
This application serves as the data source for the SkyServer web platform.
More information in the web traffic and REST API documentation pages.
Client libraries in python and R can be found in the SciScript-Python and SciScript-R repositories.