WSDL stands for Web Services Description Language and is used to describe a Web Service in machine-readable form. WSDL is based on XML.

The WSDL for Rezlynx API can be found here - http://muk.rezlynx.net/RlxSoapredir/RLXSOAP.asmx?WSDL

Please note - not all methods described in the WSDL file may be available through the Public API. If a method is not listed in API METHODS then it is not available for general use.