Quick question: how many of the subagents you've defined in ~/. claude/agents/ have actually been called this month? I couldn't have told you — until I started measuring, and this morning's tally revealed 44 agents that hadn't been invoked even once in 30 days .
Source: [Dev.to](https://dev.to/bokuwalily/hunting-down-zombie-agents-logging-subagent-usage-with-a-claude-code-stop-hook-332g)