curl --request POST \
  --url https://api.iotools.cloud/v1/tool/area-of-square-calculator \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "sideLength": "5",
  "unit": "cm"
}
'

{
  "tool": "area-of-square-calculator",
  "tool_version": "1.0.1",
  "outputs": {
    "results": [
      {
        "metric": "Area",
        "value": "25 cm²"
      },
      {
        "metric": "Perimeter",
        "value": "20 cm"
      },
      {
        "metric": "Diagonal",
        "value": "7.07 cm"
      }
    ]
  },
  "credits_used": 3,
  "credits_remaining": null
}