There is the standard RobotHub FE API for communicating with your app from said app's frontend
there is nothing to install right now, its auto injected in your frontend when served from the
this means it is rather difficult to use React/other frameworks, develop externally
<script>) for very simple things
the documentation on this was pulled, as the API is changing right now, and new documentation is WIP - although that's going to require a new firmware to use, accompanying libraries will be released and more.
You can, however, still see it used in our tree/main repository luxonis/robothub-examples
as for replicating some of the functionality of the official app - some of the calls/features are internal and inaccessible to other apps right now as this app is being rewritten for public consumption at the moment.
Also you can't really write just frontend for the official RAE app - there is no way to connect to it
it must be the app's official frontend (placed as part of apps source) to connect to it.
Could you be a bit more specific about what you are trying to achieve?