curl --request POST \
  --url https://api.iotools.cloud/v1/tool/soil-bearing-capacity-calculator \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "unitSystem": "si",
  "footingShape": "strip",
  "soilCondition": "general",
  "cohesion": "0",
  "frictionAngle": "30",
  "unitWeight": "18",
  "footingWidth": "1.5",
  "footingDepth": "1",
  "factorOfSafety": "3"
}
'

{
  "tool": "soil-bearing-capacity-calculator",
  "tool_version": "1.0.2",
  "outputs": {
    "results": [
      {
        "metric": "Nc",
        "value": "30.14"
      },
      {
        "metric": "Nq",
        "value": "18.40"
      },
      {
        "metric": "Nγ",
        "value": "15.07"
      },
      {
        "metric": "Effective overburden pressure (q)",
        "value": "18.00 kPa"
      },
      {
        "metric": "Ultimate bearing capacity (qu)",
        "value": "534.66 kPa"
      },
      {
        "metric": "Gross allowable bearing capacity (qa)",
        "value": "178.22 kPa"
      },
      {
        "metric": "Net allowable bearing capacity",
        "value": "172.22 kPa"
      }
    ],
    "summary": "Net allowable bearing capacity ≈ 172.22 kPa (FS = 3)"
  },
  "credits_used": 5,
  "credits_remaining": null
}