curl --request POST \
  --url https://api.iotools.cloud/v1/tool/decking-calculator \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "unitSystem": "imperial",
  "deckLength": "12",
  "deckWidth": "10",
  "boardWidth": "5.5",
  "boardLength": "12",
  "boardGap": "0.125",
  "joistSpacing": "16",
  "beamSpacing": "8",
  "wastePercent": "10",
  "fastenerDensity": "3.5"
}
'

{
  "tool": "decking-calculator",
  "tool_version": "1.0.2",
  "outputs": {
    "results": [
      {
        "metric": "Deck area",
        "value": "120.00 sq ft"
      },
      {
        "metric": "Board rows across width",
        "value": "22"
      },
      {
        "metric": "Boards per row (end to end)",
        "value": "1"
      },
      {
        "metric": "Boards needed (no waste)",
        "value": "22 boards"
      },
      {
        "metric": "Waste boards",
        "value": "3 boards"
      },
      {
        "metric": "Total boards (with waste)",
        "value": "25 boards (+10%)"
      },
      {
        "metric": "Joist count",
        "value": "11"
      },
      {
        "metric": "Total joist length",
        "value": "110.00 ft"
      },
      {
        "metric": "Beam count",
        "value": "3"
      },
      {
        "metric": "Total beam length",
        "value": "36.00 ft"
      },
      {
        "metric": "Posts needed",
        "value": "6"
      },
      {
        "metric": "Fasteners needed",
        "value": "420"
      }
    ],
    "summary": "120.00 sq ft deck · 25 boards +10%"
  },
  "credits_used": 5,
  "credits_remaining": null
}