I've written a Perl "framework" for the Ipernity API. Here is the first release. Maybe still little bit buggy and probably there are some things to improve. Let me know your comments.

Simply download: www.pebcak.de/tmp/Ipernity-API.tar.gz
To install, just extract the .tar.gz file, change to the new folder and run:

perl Makefile.PL
make
make test
make install