eXtensible REST Services Protocol is an application-level protocol to extend and compose Restful Web Services. This protocol is based on the plug-in architecture style to program and run composite Web Services.

eXtensible REST Services Protocol aims to unify the experience and implementation of programmable web services into a single, open, community-driven protocol. Our goal is to run the Web as an extensible and distributed platform that enables rapid development of integrated Restful applications based on a plug-in model.