From HEXONET Wiki
The new SDKs provide developers with a modern library for accessing and taking advantage of our high performance API. With these SDKs, beginners will be able to build robust domain-specific applications using HEXONET as registrar.
The documentation of our SDKs provides all you need and can be found on github, just follow the given links.
Net::DRI Library: EPP access using the Net::DRI perl library]