KDE 2.0 includes Kurt Ganroth's kxmlrpc daemon, which allows you to script KDE applications using XML-RPC.
Here's a short sample application in Python. It shows you how to connect to kxmlrpc, manipulate your KDE address book, and query the KDE trader.
If you have any other articles or example code, please see the section called Submitting Other Snippets in Chapter 14. We'd like to have more information on scripting KDE.