curl --request POST \
  --url https://api.iotools.cloud/v1/tool/short-circuit-current-estimator \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "circuitType": "three",
  "voltage": "400",
  "transformerKva": "500",
  "transformerImpedancePercent": "5",
  "cableLength": "50",
  "conductorMaterial": "copper",
  "conductorSize": "25"
}
'

{
  "tool": "short-circuit-current-estimator",
  "tool_version": "1.0.1",
  "outputs": {
    "summary": [
      {
        "metric": "Fault Type",
        "value": "Three-phase"
      },
      {
        "metric": "Transformer Impedance",
        "value": "16.00 mΩ"
      },
      {
        "metric": "Cable Resistance",
        "value": "34.48 mΩ"
      },
      {
        "metric": "Total Impedance",
        "value": "50.48 mΩ"
      },
      {
        "metric": "Prospective Short-Circuit Current",
        "value": "4.57 kA (4575 A)"
      }
    ]
  },
  "credits_used": 3,
  "credits_remaining": null
}