Our API supports the OAuth 2.0 Authorization Code Grant standard, which does not support a completely automated authentication flow. This means that if you are using this method to authenticate, manual steps will be required by the user. If you require a fully automated login process without manual, human input, our certificate-based authentication method may be suitable. This authentication method is available for server-to-server integrations, and requires no manual input to authenticate users.
Please note that certificate-based authentication is restricted to select partners.