curl --request GET \
  --url https://api.trymaitai.ai/api/v1/monitors/{monitor_id}/targets/{monitor_target_id}/metrics \
  --header 'X-Maitai-Api-Key: <api-key>'

{
  "data": {
    "monitor_id": 501,
    "monitor_target_id": 9002,
    "target_type": "workflow",
    "target_id": 42,
    "metrics": {
      "sampled_count": 280,
      "error_count": 13,
      "error_rate": 0.0464
    }
  }
}