[Libvir] Web Interface Question

Hey guys, I'm designing a web interface for libvirt so that my customers can manage their DomUs - unless you know of a good one that already exists??? I'm thinking that the best way to run this is have the web server connected to libvirtd - but I can't find any documentation about the API it presents - can you help? I considered giving the web server access to virsh and parsing that, but that has obvious security implications as it would need root/sudo access Regards, Henri