To install autocomplete, download it from here
PROG=bitcart-cli source cli-autocomplete.shOr put it to /etc/bash_completion.d/bitcart-cli
For zsh autocompletion, download it from here
And use it:
PROG=bitcart-cli source cli-zsh-autocomplete.shOr put it to zsh site-functions directory, e.g. to /opt/homebrew/share/zsh/site-functions/_bitcart-cli