Access to the kit is on an invite-only basis at the moment, and interested developers have to go to Skype’s website and fill out an online form detailing their user and organization info.
SkypeKit will allow the integration of voice and video calling and/or IM features into third-party desktop applications or compatible Internet-connected hardware devices. It also offers Skype’s super wideband audio, based on the SILK codec. Developers who use SkypeKit will be able to describe their apps as “plugged into Skype” in their marketing materials, notes a company blog post about the announcement.