curl --request POST \
  --url https://api.iotools.cloud/v1/tool/shower-cost-calculator \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "flowRate": "9",
  "duration": "8",
  "showers": "1",
  "temperatureRise": "30",
  "waterCost": "2.5",
  "energyCost": "0.16"
}
'

{
  "tool": "shower-cost-calculator",
  "tool_version": "1.0.1",
  "outputs": {
    "summaryTable": [
      {
        "metric": "Water Used",
        "value": "72.0 L"
      },
      {
        "metric": "Energy Used",
        "value": "2.51 kWh"
      },
      {
        "metric": "Water Cost",
        "value": "$0.18"
      },
      {
        "metric": "Energy Cost",
        "value": "$0.40"
      },
      {
        "metric": "Total Cost",
        "value": "$0.58"
      },
      {
        "metric": "Cost per Shower",
        "value": "$0.58"
      }
    ]
  },
  "credits_used": 3,
  "credits_remaining": null
}