To get started create a vanilla confluence plugin
cd into the newly created maven project
atlas-create-confluence-plugin-module and select the REST module type
run up the embedded Confluence server (you dont need to specify the debug port option:-
The plugin will probably fail to deploy and you may notice a message saying it is disabled in the console. This looks to be a bug in the deployment process.
Open up another terminal window, cd into the maven project folder and enter
then enter pi to deploy your REST plugin and this time it should deploy successfully.
You should be able to access your plugin at :-
Which should show the XML :-