curl --request GET \
  --url https://api.example.com/remnawave/status \
  --header 'X-API-Key: <api-key>'

{
  "is_configured": true,
  "configuration_error": "<string>",
  "connection": {
    "status": "<string>",
    "message": "<string>",
    "api_url": "<string>",
    "status_code": 123,
    "system_info": {}
  }
}