The different end types are processed differently, a Page is not the same as a JsonEndpoint, some are expected as being loaded by a page some are not expected to be accessed by users directly
The rule engine works differently based on type as well as the returning type of data.
Requirements
Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2