curl --request POST \
  --url https://api.iotools.cloud/v1/tool/light-bulb-savings-calculator \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "oldWatts": "60",
  "newWatts": "8",
  "oldBulbCost": "1.00",
  "newBulbCost": "3.50",
  "oldLifespanHours": "1000",
  "newLifespanHours": "25000",
  "hoursPerDay": "5",
  "numberOfBulbs": "1",
  "electricityRate": "0.13",
  "years": "10",
  "co2PerKwh": "0.92"
}
'

{
  "tool": "light-bulb-savings-calculator",
  "tool_version": "1.0.1",
  "outputs": {
    "summary": [
      {
        "metric": "Old Bulb Annual Energy Use",
        "value": "109.5 kWh"
      },
      {
        "metric": "New Bulb Annual Energy Use",
        "value": "14.6 kWh"
      },
      {
        "metric": "Annual Energy Saved",
        "value": "94.9 kWh (86.7%)"
      },
      {
        "metric": "Annual Energy Cost Savings",
        "value": "$12.34"
      },
      {
        "metric": "10-Year Total Savings",
        "value": "$139.07"
      },
      {
        "metric": "Payback Period",
        "value": "2.4 months"
      },
      {
        "metric": "CO2 Savings",
        "value": "87.3 lbs/year"
      },
      {
        "metric": "Old Bulbs Needed (10y)",
        "value": "18.3"
      },
      {
        "metric": "New Bulbs Needed (10y)",
        "value": "0.7"
      }
    ],
    "yearly": [
      {
        "year": "1",
        "old-bulb-cost": "$16.06",
        "new-bulb-cost": "$2.15",
        "cumulative-savings": "$13.91"
      },
      {
        "year": "2",
        "old-bulb-cost": "$32.12",
        "new-bulb-cost": "$4.31",
        "cumulative-savings": "$27.81"
      },
      {
        "year": "3",
        "old-bulb-cost": "$48.18",
        "new-bulb-cost": "$6.46",
        "cumulative-savings": "$41.72"
      },
      {
        "year": "4",
        "old-bulb-cost": "$64.24",
        "new-bulb-cost": "$8.61",
        "cumulative-savings": "$55.63"
      },
      {
        "year": "5",
        "old-bulb-cost": "$80.30",
        "new-bulb-cost": "$10.77",
        "cumulative-savings": "$69.53"
      },
      {
        "year": "6",
        "old-bulb-cost": "$96.36",
        "new-bulb-cost": "$12.92",
        "cumulative-savings": "$83.44"
      },
      {
        "year": "7",
        "old-bulb-cost": "$112.42",
        "new-bulb-cost": "$15.07",
        "cumulative-savings": "$97.35"
      },
      {
        "year": "8",
        "old-bulb-cost": "$128.48",
        "new-bulb-cost": "$17.23",
        "cumulative-savings": "$111.25"
      },
      {
        "year": "9",
        "old-bulb-cost": "$144.54",
        "new-bulb-cost": "$19.38",
        "cumulative-savings": "$125.16"
      },
      {
        "year": "10",
        "old-bulb-cost": "$160.60",
        "new-bulb-cost": "$21.54",
        "cumulative-savings": "$139.07"
      }
    ]
  },
  "credits_used": 3,
  "credits_remaining": null
}