curl --request POST \
  --url https://api.iotools.cloud/v1/tool/sheet-metal-bend-allowance-calculator \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "bendAngle": "90",
  "insideRadius": "3",
  "thickness": "2",
  "kFactor": "0.33",
  "leg1Length": "",
  "leg2Length": ""
}
'

{
  "tool": "sheet-metal-bend-allowance-calculator",
  "tool_version": "1.0.2",
  "outputs": {
    "results": [
      {
        "metric": "Bend Angle",
        "value": "90.0°"
      },
      {
        "metric": "Inside Bend Radius",
        "value": "3.000 mm"
      },
      {
        "metric": "Material Thickness",
        "value": "2.000 mm"
      },
      {
        "metric": "K-Factor",
        "value": "0.33"
      },
      {
        "metric": "Bend Allowance",
        "value": "5.749 mm"
      },
      {
        "metric": "Outside Setback",
        "value": "5.000 mm"
      },
      {
        "metric": "Bend Deduction",
        "value": "4.251 mm"
      }
    ]
  },
  "credits_used": 5,
  "credits_remaining": null
}