istioctl x waypoint delete --all --namespace default`,
		Args: func(cmd *cobra.Command, args []string) error {
			if deleteAll && len(args) > 0 {
				return fmt.Errorf("cannot specify waypoint names when deleting all waypoints")
			}
			if !deleteAll && len(args) == 0 {
				return fmt.Errorf("must either specify a waypoint name or delete all using --all")
			}
			return nil
		},