Most people's Claude Skills are invisible to Claude. Claude scans every installed skill's description before deciding to load it. The decision happens from that single line. Skills with descriptions under 100 characters stay invisible because Claude can't tell what they do. I tested 25 of my top Skills across 75 runs last week. The recipe planner I built had a 37-character description: "Suggest recipes from what's in fridge." I sent 10 prompts that should have triggered it. "What can I make…