get_host_pubkey.py

import sys

import paramiko


def main(hosts: list[str]) -> None:
    for host in hosts:
        transport = paramiko.transport.Transport((host, 22))
        transport.start_client(timeout=1)
        key = transport.get_remote_server_key()
        print(key.get_base64())


if __name__ == '__main__':
    main(sys.argv[1:])