curl --request POST \
  --url https://api.iotools.cloud/v1/tool/carbon-footprint-estimator \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "shortFlightKm": "2000",
  "longFlightKm": "8000",
  "carDistance": "12000",
  "distanceUnit": "km",
  "carType": "gasoline",
  "electricityKwh": "4500",
  "naturalGasTherms": "600",
  "gridRegion": "us",
  "diet": "average",
  "goodsSpending": "12000",
  "compareCountry": "us"
}
'

{
  "tool": "carbon-footprint-estimator",
  "tool_version": "1.0.1",
  "outputs": {
    "results": [
      {
        "category": "Flights (short-haul)",
        "value": "492 kg"
      },
      {
        "category": "Flights (long-haul)",
        "value": "1,560 kg"
      },
      {
        "category": "Car / vehicle",
        "value": "2,304 kg"
      },
      {
        "category": "Transport subtotal",
        "value": "4,356 kg (28.3%)"
      },
      {
        "category": "Electricity",
        "value": "1,737 kg"
      },
      {
        "category": "Natural gas",
        "value": "3,180 kg"
      },
      {
        "category": "Home energy subtotal",
        "value": "4,917 kg (32.0%)"
      },
      {
        "category": "Food / diet",
        "value": "2,500 kg (16.3%)"
      },
      {
        "category": "Goods & services",
        "value": "3,600 kg (23.4%)"
      },
      {
        "category": "Total annual emissions",
        "value": "15,373 kg / 15.37 t"
      },
      {
        "category": "Compared to United States",
        "value": "16.0 t"
      },
      {
        "category": "Difference vs average",
        "value": "0.63 t below average"
      },
      {
        "category": "Equivalent (trees)",
        "value": "615 mature trees absorbing CO2 for one year"
      },
      {
        "category": "Equivalent (gasoline)",
        "value": "1,730 gallons of gasoline burned"
      }
    ]
  },
  "credits_used": 3,
  "credits_remaining": null
}