I've put up the second release of my first foray into writing add-ons for Catalyst: Catalyst::Model::ISBNDB. It uses my WebService::ISBNDB (now at version 0.31) module to provide access to the isbndb.com web service as a Catalyst model.
This release adds a component to work with Catalyst::Helper, so that one can use the *_create.pl script that catalyst.pl generates for you, to auto-create a model component for your app that derives from Catalyst::Model::ISBNDB. Since the version number on the main class didn't change, this change won't appear in CPAN for anyone who'd actually installed C::M::I.