curl --request GET \
  --url https://api.ai-stats.phaseo.app/v1/health \
  --header 'Authorization: Bearer <token>'

{
  "ok": true,
  "window_minutes": 123,
  "scope": {
    "provider": "<string>",
    "model": "<string>",
    "endpoint": "<string>"
  },
  "overall": {
    "status": "up",
    "providers_up": 123,
    "providers_total": 123,
    "p50_ms": 123,
    "p95_ms": 123,
    "success_rate": 123
  },
  "providers": [
    {
      "provider": "<string>",
      "status": "up",
      "breaker": "closed",
      "success_rate": 123,
      "load": 123,
      "last_updated": 123,
      "p50_ms": 123,
      "p95_ms": 123
    }
  ],
  "generated_at": 123
}