Hi Andy,

You can develop your own smart applications which has REST apis and deploy them in the sandboxes.

This can be accessed from anywhere similar way you use REST apis.

Below is the Login Command API for Innovation Suite, you may try from any REST client like postman.

Innovation Suite Login Command

POST https://developerxxxx.innovate.bmc.com/api/rx/application/command
Content-Type: application/json
X-Requested-By: <any value>

{
    "resourceType":"com.bmc.arsys.rx.application.user.command.LoginCommand",
    "username":"<user name>",
    "password":"<password>"
}