src/developer/debug/debug_agent/meta/limbo_caller.cmx

{
    "program": {
        "binary": "bin/limbo_caller"
    },
    "sandbox": {
        "services": [
            "fuchsia.boot.RootJob",
            "fuchsia.exception.ProcessLimbo",
            "fuchsia.process.Launcher"
        ]
    }
}