When your running your WCF Service you could check the service with http://localhost:8080/ImportService and http://localhost:8080/ImportService?wsdl as when you worked with a web service. But our friends at iDesign has developed a tool called IDesign Metadata Explorer to help us get some more information about our services. Download the tool with source code here.
I had to remove the bin and obj folders and compile the code before it could start. The exe file included in the zip file didn't worked.
