Futuros de diésel ULSD NY Harbor de NYMEX.
curl "https://metalapi.com/api/v1/latest?api_key=YOUR_API_KEY&base=USD¤cies=HEATINGOIL"{
"success": true,
"base": "USD",
"rates": {
"HEATINGOIL": 0.2088991017,
"USDHEATINGOIL": 4.787
}
}