I stole most of the code from Catalyst::Authentication::Credential::Facebook::OAuth2 by Florian Ragwitz, replaced the use of Net::Facebook::Oauth2 with Net::OAuth2, and added support to "grant_type" parameter. These are to support both Facebook and mixi via OAuth2 in my current project. Feel free to use it in wha ACKNOWLEDGEMENTS As was described above this software is based on a software written by Florian Ragwitz <firstname.lastname@example.org>. AUTHOR Fumiaki Yoshimatsu <email@example.com> COPYRIGHT AND LICENSE This software is copyright (c) 2010 by Fumiaki Yoshimatsu. the software based on which this softare was written is copyright (c) 2010 by Florian Ragwitz, Reask Limited. This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.