post https://passwordzero.herokuapp.com/v1/v1/passcodes/sms/create
This endpoint allows you to create a one-time passcode for a user using their phone number. This gives you the flexibility to deliver the passcode via any communication channel of your choice.
This passcode can only be used to authenticate a phone number even if it is delivered via other communication channels such as email. This token can only be used to authenticate a user via the authenticate with sms passcode endpoint.