I'm wondering if there is a way of automatically adding an @na tag to the first project task underneath the project title?

I assume some Python would be the way but don't have a starting point.
I'm looking to use this as a replacement for the next available command in OmniFocus.

Or is there a way to show this in the console with hyperlinked results as done in workflows such as show available by macdrifter?

Thanks for any advice on this.