Short and sweet version: Is there a single web service method that would return the names of all available reports, and each report's parameters?
I have my web code (C#/MVC) connected to a SSRS web service, and I am able to retrieve reports through those services.
I know I can get a list of available reports like this:
var rService = new ReportingService2005
Url = @"http://domain.com/ReportServer/ReportService2005.asmx?wsdl",
Credentials = System.Net.CredentialCache.DefaultCredentials
var reportList = rService.ListChildren(@"/Blah", true);
string historyId = null;
ReportService.ParameterValue values = null;
ReportService.DataSourceCredentials credentials = null;
var parameters = rService.GetReportParameters(@"/Blah/" + reportName, historyId, true, values, credentials);
There is not such a call bulitin to the webservices interface. As an alternative, you could achieve something similar by directly querying the reporting services systems tables in the ReportServer DB; but this is going to be version dependant, and MS probably will not support it.
That being said I have used these tables to create several adhoc reports in the past. and did not experience any problems YMMV.