https://yunohost.org/registar_api_cloudflare
what is supposed to be here?
edit1
https://dns-lexicon.readthedocs.io/en/latest/configuration_reference.html#cloudflare
auth_username Specify email address for authentication (for global api key only)
auth_token Specify token for authentication (global api key or api token)
zone_id Specify the zone id (if set, api token can be scoped to the target zone)
There are two ways to provide an authentication granting edition to the target CloudFlare DNS zone.
1 - A Global API key, with –auth-username and –auth-token flags.
2 - An unscoped API token (permissions Zone:Zone(read) + Zone:DNS(edit) for all zones), with –auth-token flag.
3 - A scoped API token (permissions Zone:Zone(read) + Zone:DNS(edit) for one zone), with –auth-token and –zone-id flags.