{
  "description": "Create backup before editing files",
  "hooks": {
    "PreToolUse": [
      {
        "matcher": "Edit",
        "hooks": [
          {
            "type": "command",
            "command": "cp \"$CLAUDE_TOOL_FILE_PATH\" \"$CLAUDE_TOOL_FILE_PATH.backup.$(date +%s)\" 2>/dev/null || true"
          }
        ]
      }
    ]
  }
}