It is really easy to get the SharePoint site search navigation nodes / settings via REST API, all you need to do is call the fully REST end point: View the code on Gist.
The following example shows how you can get all job titles back within SharePoint using the User Information List. Unfortunately it is not possible to do this via a dedicated REST API call or by using Search (due to the
It is possible to get an App/Add-in redirect URL (the url used to launch an app) using a simple client side code REST call. This one is really easy. Just fire a REST call to (where <SITE URL> is the