curl --request POST \
  --url https://api.iotools.cloud/v1/tool/cat-litter-box-calculator \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "catCount": "2",
  "floors": "1",
  "litterType": "clumping-clay",
  "bagSize": "10",
  "volumeUnit": "l",
  "bagCost": "15"
}
'

{
  "tool": "cat-litter-box-calculator",
  "tool_version": "1.0.2",
  "outputs": {
    "results": [
      {
        "metric": "Recommended Boxes (N+1 rule)",
        "value": "3 for 2 cats"
      },
      {
        "metric": "Total Boxes to Place",
        "value": "3"
      },
      {
        "metric": "Litter Type",
        "value": "Clumping Clay"
      },
      {
        "metric": "Recommended Full Change",
        "value": "Every 21 days — Scoop daily; clumps let you top off between full changes."
      },
      {
        "metric": "Weekly Litter Usage",
        "value": "3.0 L"
      },
      {
        "metric": "Monthly Litter Usage",
        "value": "13.0 L"
      },
      {
        "metric": "Bags Needed per Month",
        "value": "1.3"
      },
      {
        "metric": "Estimated Monthly Cost",
        "value": "$19.55"
      },
      {
        "metric": "Cost per Cat per Month",
        "value": "$9.78"
      }
    ],
    "placement": [
      {
        "floor": "Floor 1",
        "boxes": "3 boxes"
      }
    ]
  },
  "credits_used": 5,
  "credits_remaining": null
}