routeros-scripts-main/ssh-keys-import

#!rsc
# RouterOS script: ssh-keys-import
# Copyright (c) 2013-2020 Christian Hesse <mail@eworm.de>
#
# import ssh keys from file
# https://git.eworm.de/cgit/routeros-scripts/about/doc/ssh-keys-import.md

:foreach Key in=[ / file find where type="ssh key" ] do={
  / user ssh-key import user=admin public-key-file=[ / file get $Key name ];
}