With which methods do I create wiki content on SharePoint, using the provided web services?
I've searched the MSDN docs up and down - with no result.
You create any list in SharePoint using the List.asmx web service.
That service has a method named AddList which takes 3 parameters:
In the case of a wiki - you will use Template ID 119.
The documentation only partially lists these template ID's. A better list used to be here (now a 404) and is now accessible through the Internet Archive here.
NOTE: Use the URL property of the List web service to specify where the new list should be created.