query ServiceLevels($limit: Int) {
  serviceLevels(limit: $limit) {
    data {
      id
      object
      livemode
      created
      updated
      carrier
      metric
      target
      window_days
      achieved
    }
    has_more
  }
}

{
  "limit": 10
}

{
  "data": {
    "serviceLevels": {
      "data": [
        {
          "id": "sla_1a2B3c",
          "object": "network_service_level",
          "livemode": true,
          "created": 1791302400,
          "updated": 1791302400,
          "carrier": "dhl_express",
          "metric": "on_time_delivery",
          "target": 1.5,
          "window_days": 2,
          "achieved": 1.5
        }
      ],
      "has_more": true
    }
  }
}