I posted a screencast where the plotter scans RFID tags on the tools. Still need to find out how to use the values read.

Additionally, I was finally able to clean up a bit the klipper side of things. In the Limn repo I've published the current printer/toolchanger/rfid config. It's under MIT license. The README explains the contents.

Link to Github

This is my first time configuring klipper, so I'd be keen to know what could be done better!