async def METHOD_NAME(
    loglevel: str | None = None,
    **extra_tractor_kwargs
) -> bool:
    """
    Start the clearing engine under ``pikerd``.
    """
    log.info('Spawning emsd')
    portal = await Services.actor_n.start_actor(
        'emsd',
        enable_modules=[
            'piker.clearing._ems',
            'piker.clearing._client',
        ],
        loglevel=loglevel,
        debug_mode=Services.debug_mode,  # set by pikerd flag
        **extra_tractor_kwargs
    )
    # non-blocking setup of clearing service
    from ..clearing._ems import _setup_persistent_emsd
    await Services.start_service_task(
        'emsd',
        portal,
        # signature of target root-task endpoint
        _setup_persistent_emsd,
        loglevel=loglevel,
    )
    return True