My understanding is that there are two common settings of ROOT_URLCONF people use. One is the default ROOT_URLCONF = '' value, and the second is ROOT_URLCONF = 'urls'. This project seems to fail if you use the latter (or at least it did for me). Changing that line to self.get_all_view_names(root_urlconf.urlpatterns) worked but it would be best to fix in the project.

The root urlconf can also be overridden at runtime via middleware so I think this urls module loading should perhaps be moved into the get_endpoints method or the value of that setting should be passed into the ApiDocumentation object on init.

Nice project BTW. :-)