curl --request POST \
  --url https://api.iotools.cloud/v1/tool/squareness-checker \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "sideA": "3",
  "sideB": "4",
  "diagonal": "5",
  "unitSystem": "customary",
  "tolerance": "0.125"
}
'

{
  "tool": "squareness-checker",
  "tool_version": "1.0.2",
  "outputs": {
    "status": "Square: the measured diagonal of 5 ft is within 0.125 in of the expected 5 ft — corner angle 90°.",
    "result": [
      {
        "property": "Expected Diagonal",
        "value": "5 ft"
      },
      {
        "property": "Deviation",
        "value": "+0 ft (0 in)"
      },
      {
        "property": "Corner Angle",
        "value": "90°"
      },
      {
        "property": "Angle Deviation (from 90°)",
        "value": "+0°"
      },
      {
        "property": "Percent Error",
        "value": "0%"
      },
      {
        "property": "Within Tolerance?",
        "value": "Yes"
      },
      {
        "property": "Rating",
        "value": "Excellent — effectively square"
      },
      {
        "property": "Suggested Adjustment",
        "value": "No adjustment needed."
      }
    ]
  },
  "credits_used": 5,
  "credits_remaining": null
}