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

{
  "tool": "board-foot-calculator",
  "tool_version": "1.0.1",
  "outputs": {
    "results": [
      {
        "metric": "Board Feet per Board",
        "value": "4.000"
      },
      {
        "metric": "Total Board Feet",
        "value": "4.00 (1 board)"
      },
      {
        "metric": "Total Cubic Feet",
        "value": "0.333"
      },
      {
        "metric": "Estimated Total Weight",
        "value": "12.00 lb"
      },
      {
        "metric": "Total Cost",
        "value": "-"
      }
    ]
  },
  "credits_used": 3,
  "credits_remaining": null
}