The URL is also different when using the API as well. Go here to see a list of servers we support via the dRofus REST API documentation.
Currently we use basic authentication (username and password). Username is on the form <db-name>/[project-id/]user-name[/language], where:
|db-name||The database-name as you would enter in dRofus Client|
|project-id||Id of project. Usually '01'. This is optional only if database only contains one project|
|user-name||The name you log on with in dRofus client|
|language||The language you want to see data in. Optional, and default is the language configured for the database|
See examples of using the API: