To ensure Robot Ninja continues to function correctly when the Swift Performance Lite plugin is enabled you will need to ensure that your sites REST URLs are excluded from caching.
You can find the setting to disable caching of REST URLs in your WordPress Dashboard under Tools -> Swift Performance -> Caching -> Exceptions.
Simply ensure that the setting "Exclude REST URLs" is checked.
This will ensure that Robot Ninja is able to access fresh (non cached) data on each request.
The plugin also removes the default WordPress link headers for cached responses so you will need to ensure you do not have any other plugins enabled that remove the WordPress API Link Tag from your site otherwise we will not be able to perform API Discovery.