There is currently 1 XMLRPC APIs available from the sipXopenfire plugin.

Unified Presence

NOTE : Calls are secured using BASIC Authentication
XML-RPC presence java clients provided by sipxecs (sipXopenfire project) can be used using the SHARED_SECRET

Here you can get and set someone's unified presence.  

Example using curl CLI tool to get presence information

Step 1. Create a file called get-presence.xml with content, replace 200 with the SIP user id you wish to get presence information on

<?xml version="1.0"?>