I installed 107 skills, 38 agents and 15 commands into Claude Code over a few months. Standard stuff — you see a skill recommended somewhere, it looks useful, you drop it in. Nobody ever tells you to take one out.

Last week I finally measured what that pile costs. The answer is 9,857 tokens, and I pay it on every single session before I type a character.

Here is how to check yours.

Skills have two costs, and everyone thinks about the wrong one

A skill's body loads when the skill triggers. That cost is visible and roughly fair — you asked for the skill, you pay for the skill.