curl --request POST \
  --url https://api.iotools.cloud/v1/tool/sphere-calculator \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "unit": "cm",
  "precision": "2",
  "solveFrom": "radius",
  "radius": "5"
}
'

{
  "tool": "sphere-calculator",
  "tool_version": "1.0.2",
  "outputs": {
    "results": [
      {
        "property": "Radius",
        "value": "5 cm"
      },
      {
        "property": "Diameter",
        "value": "10 cm"
      },
      {
        "property": "Circumference",
        "value": "31.42 cm"
      },
      {
        "property": "Surface Area",
        "value": "314.16 cm²"
      },
      {
        "property": "Volume",
        "value": "523.6 cm³"
      }
    ]
  },
  "credits_used": 5,
  "credits_remaining": null
}