curl --request POST \
  --url https://api.iotools.cloud/v1/tool/lumber-calculator \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "thickness": "1",
  "width": "6",
  "length": "8",
  "quantity": "10",
  "wastePercent": "10",
  "pricePerBoardFoot": "4.50"
}
'

{
  "tool": "lumber-calculator",
  "tool_version": "1.0.2",
  "outputs": {
    "results": [
      {
        "metric": "Board Feet per Board",
        "value": "4.000"
      },
      {
        "metric": "Total Board Feet",
        "value": "40.00"
      },
      {
        "metric": "Waste Allowance",
        "value": "4.00 bf (10%)"
      },
      {
        "metric": "Total Board Feet (with waste)",
        "value": "44.00"
      },
      {
        "metric": "Total Linear Feet",
        "value": "80.00"
      },
      {
        "metric": "Coverage Area (sq ft)",
        "value": "40.00"
      },
      {
        "metric": "Estimated Cost",
        "value": "$198.00"
      }
    ]
  },
  "credits_used": 5,
  "credits_remaining": null
}