Your tool kit consisting of 8 regular Tools and 1 Ally (or 2 Allies when playing solo) is placed under your Character Tool. Over the course of the campaign, cards can be permanently added to or removed from your tool kit. 

Tools and Allies in your tool kit must be purchased at the start of an episode or when you Focus. To purchase a Tool or Ally, spend Resources equal to its cost. Purchased Tools and Allies are placed in your play zone. 

See Character Customization for details on how to customize your tool kit.

Clarifications:

• Your Character Tool is not part of your tool kit.
• If your tool kit is empty, nothing special happens. You simply cannot purchase any more Tools and/or Allies.