Thanks for your interest in improving the Opbeat module, that's great! We discussed adding a management command like this for a long time, so we're definitely open to add it.

For getting the org/app IDs and the secret token, it would probably be better to just import a client object from opbeat.contrib.django.models and get the variables from there. That way, you get the correct values, no matter if they are configured via environment variables or Django settings.

    from opbeat.contrib.django.models import client
    org_id, app_id, token = client.organization_id, client.app_id, client.secret_token

That would be very interesting! Currently, the Fabric-based model requires us to have the client codes hardcoded - unless we write some extra local configuration to cover multiple environments of an app on Opbeat (eg staging, production).
A management command would be excellent.