Re:ASP.NET You're doing it Wrong. An Introduction to Nancy
by philliphaydon on Wednesday August 21, 2013 @12:12PM
(#6251323)
Nancy uses extension methods in placement of Attributes.
Forms auth is done by calling this.RequiresAuthentication(); you can implement an extension method to do an ApiKey check in about 5 lines of code :)
Nancy is cool and i'd definitely consider using it in the future but for now, it was easier to port over our api from MVC4 to a much more familiar structure.