def get_compat_backend(**kwargs):
    """
    Return a JupiterRequestsBackend instance.

    Jupiter or Ascended compat interface REST API Client. Given keyword
    arguments, construct and return an instance of the JupiterRequestsBackend.
    Accepts a username/password pair or a cookie.

    :param dict kwargs: Keyword arguments used to construct the backend
    :return: An instantiated JupiterRequestsBackend
    :rtype: JupiterRequestsBackend
    """
    # Defaults
    settings = {
        'base_url': 'http://localhost/compat',
        'verify': False,
    }
    # Arguments
    settings.update(kwargs)
    session = JupiterRequestsBackend.authenticate_session(
        settings['base_url'],
        settings['username'],
        settings['password'],
        verify=settings['verify'],
    )
    return JupiterRequestsBackend(
        session,
        settings['base_url'],
        verify=settings['verify'],
        username=settings['username'],
        password=settings['password'],
    )