curl --request POST \
  --url https://api.iotools.cloud/v1/tool/earned-value-calculator \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "budgetAtCompletion": "100000",
  "plannedPercentComplete": "50",
  "actualPercentComplete": "40",
  "actualCost": "45000"
}
'

{
  "tool": "earned-value-calculator",
  "tool_version": "1.0.2",
  "outputs": {
    "results": [
      {
        "metric": "Planned value (PV)",
        "value": "$50,000.00"
      },
      {
        "metric": "Earned value (EV)",
        "value": "$40,000.00"
      },
      {
        "metric": "Actual cost (AC)",
        "value": "$45,000.00"
      },
      {
        "metric": "Cost variance (CV)",
        "value": "-$5,000.00"
      },
      {
        "metric": "Schedule variance (SV)",
        "value": "-$10,000.00"
      },
      {
        "metric": "Cost performance index (CPI)",
        "value": "0.889"
      },
      {
        "metric": "Schedule performance index (SPI)",
        "value": "0.800"
      },
      {
        "metric": "Estimate at completion (EAC)",
        "value": "$112,500.00"
      },
      {
        "metric": "Estimate to complete (ETC)",
        "value": "$67,500.00"
      },
      {
        "metric": "Variance at completion (VAC)",
        "value": "-$12,500.00"
      },
      {
        "metric": "To-complete performance index (TCPI)",
        "value": "1.091"
      }
    ],
    "summary": "CPI 0.889 (over budget), SPI 0.800 (behind schedule) — forecast EAC $112,500.00"
  },
  "credits_used": 5,
  "credits_remaining": null
}