curl --request GET \
  --url https://api.example.com/api/analytics/summary

{
  "success": true,
  "data": {
    "period": {},
    "calls": {
      "total": 123,
      "completed": 123,
      "failed": 123,
      "avg_duration_seconds": 123
    },
    "spend": {
      "total_credits": 123,
      "total_usd": 123,
      "by_component": {}
    },
    "credits": {
      "added": 123,
      "used": 123
    }
  }
}