النحاس

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

{
  "success": true,
  "base": "USD",
  "rates": {
    "XCU": 69.6976598,
    "USDXCU": 0.01434768402
  }
}