curl --request GET \
  --url https://api.httpayer.com/metrics/rate-limits

{
  "proxy": {
    "active": 45,
    "limit": 100,
    "utilization": "45.0%"
  },
  "relay": {
    "active": 12,
    "limit": 50,
    "utilization": "24.0%"
  },
  "webhooks": {
    "active": 8,
    "limit": 200,
    "utilization": "4.0%"
  }
}