It would be great if the tool only selected things that actually can be connected with wires. You can use the entity type filters on the selection tool prototype to do this. It's a small thing, but it would make the mod just a bit nicer.

I would also suggest lightening the selection color a bit, but that's just my personal preference.

Hello. Unless something is broken, the mod already does this by using exactly that property, you can check the code in the prototypes/wire-cutter.lua :) It may look like it selects everything because almost everything can be connected in Factorio. It doesn't select assembling machines or rail, for example. The filtered selection may be more apparent in the alternative selection of the black cutting tool where it only selects things connectable by copper wire. I would like it to only select things that are actually connected, but it didn't seem like the API supports additional selection filters by state on top of the basic entity type/name filtering.

Ah, I apologize. I forgot that belts can be connected to the circuit network. Thanks!

No problem, thanks for taking interest in the mod.