Jochen,
I’m not familiar with RabbitMQ but if it has a REST API, then it may be possible to use it from EasyMorph with a bit of PowerShell scripting. See this topic Tip: How to call a REST API from EasyMorph.
Also, we’re working on a built-in action “Web request” that would allow performing REST API requests from EasyMorph without PowerShell scripting. The action will be available in the next major release.