Once the Stunner's editor API at the tooling's Envelope scope is exposed, the communication across different application shells (relying the the envelope bus) is available and can also be used by developers. 

The main goal is to create a blog post to share with the community the new Stunner API exposed through the Envelope, how to consume it and also provide a simple but functional application example by embedding the Standalone Editor in a webpage and then consuming the new API.

Check the picture below for reference: