Although in the official documentation there is no mention to Fedora or any linux distribution, actually is not that difficult to install ZAT on fedora.

You just need to install the necessary dependencies:

dnf install rubygems ruby-devel gcc-c++ rubygem-rake zlib-devel nodejs

Nodejs is needed for the zat validate command.

And finally install the ruby gem with:

gem install zendesk_apps_tools

Now you are ready to start building Zendesk Apps , a good starting point could be Build your first Support app - Part 1: Laying the groundwork