codex-plan-improver

Defined in hooks/hooks.json

{
  "PreToolUse": [
    {
      "hooks": [
        {
          "type": "command",
          "command": "${CLAUDE_PLUGIN_ROOT}/hooks/plan-review-on-exit.sh",
          "timeout": 10
        }
      ],
      "matcher": "ExitPlanMode"
    }
  ]
}

"Runs Node.js script pre-task.mjs before every Task tool call (PreToolUse hook with matcher 'Task', 3s timeout). Can block or modify Task invocations."