midclt --help will show you all the commands you can use. The most interesting being call.
If you use the format taskname.query, it essentially reads the database config, which is more “readable” if you pipe it through jq, since it is in JSON format.
If you use the format taskname.run, it informs the middleware to run the task with the matching numeric “ID”.
Using midclt keeps everything contained / integrated with the middleware/GUI. That’s why it will properly show up in your “Tasks” in the top right corner. Simply using commands (such as rsync or zfs) will not register with the middleware.
You can browse the API here.