I presumed CC would be the only way, I have done and can use it and was willing to but I don't feel like editing the modpack right now. The "I never use it" was explaining my ignorance as to if OpenPeripherals was in the pack.
ah, well if it is in there it is pretty simple you just need a while true loop a sleep and 1 for loop to go over all the slots as. It does get a bit more complicated if you want totals and not what is in a certain slot.