OP here, happy to answer any questions. I'm sure there are some things I could have improved, but at a certain point it's better to push it out into the wild. All comments, suggestions, criticisms are welcome.
Although you've done a good job at explaining, I still find it hard to imagine an application for it. Maybe it's just me.
Either way, what's your motivation, what got you to build this and what's the purpose you see it serving best?
Good question about motivation: I was tasked with incorporating guidelines for a patient intake system, and decided to spin it out into a dedicated service. It's also being used in an EMR integration for their patient portal solution. And I use it every day in clinical practice myself, via postman.