The endpoint for the iHarder.net XML-RPC services is http://iharder.sourceforge.net/rpc/xmlrpc-endpoint.php.
This retrieves text from a sort of "hashtable." The parameters are as follows:
If the key is not found in the hashtable, an XML-RPC error is returned.
This sets text in a sort of "hashtable." The parameters are as follows:
The new value is returned. This should be the value you just set.