Hi, everyone!
I created an http extension that connects to a Minecraft server and allows users to build things using a drone. The MC server (Spigot) is launched from Node.js from a script that also implements the http server. Scriptcraft plugin is used on the MC server to easily create mods using JavaScript.

You cand find the description of the project at
https://kidslovetocode.wordpress.com/2016/09/27/using-scratch-with-minecraft-scriptcraft-step-by-step-instructions/

All needed files are in a github repository
https://github.com/mpatrascu/ScratchMC

This is pretty cool!