الزنك

curl "https://metalapi.com/api/v1/latest?api_key=YOUR_API_KEY&base=USD&currencies=ZNC&unit=gram"

{
  "success": true,
  "base": "USD",
  "rates": {
    "ZNC": 246.9135802,
    "USDZNC": 0.00405
  }
}