This document describes Web Services Agreement Specification (WS-Agreement), a Web Services protocol for establishing agreement between two parties, such as between a service provider and consumer, using an extensible XML language for specifying the nature of the agreement, and agreement templates to facilitate discovery of compatible agreement parties. The specification consists of three parts which may be used in a composable manner: a schema for specifying an agreement, a schema for specifying an agreement template, and a set of port types and operations for managing agreement life-cycle, including creation, expiration, and monitoring of agreement states.
 
The goal of WS-Agreement is to standardize the terminology, concepts, overall agreement structure with types of agreement terms, agreement template with creation constraints and a set of port types and operations for creation, expiration and monitoring of agreements, including WSDL needed to express the message exchanges and resources needed to express the state.
 
During almost three years after the publication as GFD.107 in May 2007 a number of typos and formatting problems have been reported. None of them was affecting the normative part of the specification. This document is a revised version of GFD.107, which fixes all typos in the descriptive part of the document. The changes have been implemented during the GRAAP sessions at OGF 28 in Munich. Oliver Wäldrich, Philipp Wieder and Wolfgang Ziegler have prepared this version of the document.