Please vote for WS-MetaDataExchange if this is relevant to your enterprise web services

http://www-128.ibm.com/developerworks/library/specification/ws-mex/

Web services use metadata to describe what other endpoints need to know to interact with them. Specifically, WS-Policy describes the capabilities, requirements, and general characteristics of Web services; WSDL describes abstract message operations, concrete network protocols, and endpoint addresses used by Web services; XML Schema describes the structure and contents of XML-based messages received and sent by Web services.

To bootstrap communication with a Web service, this specification defines three request-response message pairs to retrieve these three types of metadata: one retrieves the WS-Policy associated with the receiving endpoint or with a given target namespace, another retrieves either the WSDL associated with the receiving endpoint or with a given target namespace, and a third retrieves the XML Schema with a given target namespace. Together these messages allow efficient, incremental retrieval of a Web service?s metadata.