curl --request POST \
  --url https://api.iotools.cloud/v1/tool/eoq-calculator \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "annualDemand": "12000",
  "orderingCost": "50",
  "holdingCost": "4",
  "leadTimeDays": "",
  "safetyStock": ""
}
'

{
  "tool": "eoq-calculator",
  "tool_version": "1.0.1",
  "outputs": {
    "results": [
      {
        "metric": "Economic Order Quantity (units)",
        "value": "547.72"
      },
      {
        "metric": "Orders per Year",
        "value": "21.91"
      },
      {
        "metric": "Cycle Length (days between orders)",
        "value": "16.7"
      },
      {
        "metric": "Annual Ordering Cost",
        "value": "$1,095.45"
      },
      {
        "metric": "Annual Holding Cost",
        "value": "$1,095.45"
      },
      {
        "metric": "Total Annual Inventory Cost",
        "value": "$2,190.89"
      },
      {
        "metric": "Reorder Point (units)",
        "value": "-"
      }
    ]
  },
  "credits_used": 3,
  "credits_remaining": null
}