If your domain provider's API sucks, or doesn't exist, or requires generating a password/key with more permissions than you're willing to give a script, look at

If your domain provider's API sucks, or doesn't exist, or requires generating a password/key with more permissions than you're willing to give a script, look at acme-dns [1] and delegated DNS challenges: https://github.com/joohoi/acme-dns https://github.com/joohoi/acme-dns