The kubernaut claims describe documentation seems to be for the delete subcommand.
(venv) [rhs@venture ambassador]$ kubernaut claims describe --help
Usage: kubernaut claims describe [OPTIONS] NAME
Delete one or more claims
Options:
--help Show this message and exit.
(venv) [rhs@venture ambassador]$ kubernaut --version
kubernaut, version 2018.08.13-5b1643b
The kubernaut claims describe documentation seems to be for the delete subcommand.