wild_dynv6.sh

token="YOUR_TOKEN"
domains="yourdomain1.com yourdomain2.com"

zones=$(curl -s \
    -H "Authorization: Bearer $token" \
    -H "Accept: application/json" \
    https://dynv6.com/api/v2/zones)

for domain in $domains; do
    zoneid=$(jq ".[] | select(.name==\"$domain\") | .id" <<< $zones)

    records=$(curl -s \
        -H "Authorization: Bearer $token" \
        -H "Accept: application/json" \
        https://dynv6.com/api/v2/zones/$zoneid/records)

    if [ -z "$(jq '.[] | select(.name == "*")' <<< $records)" ]; then
       curl -s \
       -H "Authorization: Bearer $token" \
       -H "Content-Type: application/json" \
       -H "Accept: application/json" \
       --data '{"name":"*", "data":"", "type":"CNAME"}' \
       https://dynv6.com/api/v2/zones/$zoneid/records
    fi
done