It supports a basic authentication method using user and password attributes passed as a property or as a part of the connection string as query parameters. It requires to provide the authSource value as the database name associated with the user's credentials.

To be able to connect to your MongoDB Atlas using this driver you will need to enable the SQL Atlas Interface, go to Data Services > Database click Connect and select Atlas SQL, then in Select your driver choose JDBC Driver, copy the value from the URL field.

More about Atlas SQL Interface

Using this driver the JDBC connection string should start with the prefix jdbc:mongodb:// followed by the IP address / FQDN, port and database name, such as jdbc:mongodb://<host>:<port>/<database>?authSource=<user-credentials-database>.

It supports auto loading according to JDBC 4.0, but in case there is a need for register it manually the driver class is com.splunk.dbx.mongodb.AtlasDriver.