Artisan Tools give a bonus to crafting checks, but is it just for creating items? For instance, does this bonus apply to Inventor actions like Tamper and Overdrive that use crafting checks?
Artisan Tools are only useful if you are crafting/repairing items. For things like Overdrive or Tamper, you need the Crafter's Eyepiece and its general bonus.
Also, that's a rule question, flagged for wrong forum.