Time to add some UI.
Fortunately, I know pretty easy and cool way to visualize API – my old friend Swagger. I used Swagger in one of my projects in ASP.NET and decided to use it for my Node.JS project. I found pretty good article on adding Swagger support:
Just committed first basic Swagger description in my project: https://github.com/alishdev/mongo-explorer-api which will be accessible from http://localhost:4000/api-docs/