Extract all configured hosts from Check_MK and print hostname and folder:

curl "https://<server>/<site>/check_mk/webapi.py?action=get_all_hosts&_username=$user&_secret=$secret" \
| jq '.result[] | {hostname: .hostname, path: .path}'

Extract CSV:

curl "https://<server>/<site>/check_mk/webapi.py?action=get_all_hosts&_username=$user&_secret=$secret" \
| jq -r '.result[] | [.hostname, .path] | join (";")'