curl --request POST \
  --url https://api.iotools.cloud/v1/tool/mortgage-calculator \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "homePrice": "400000",
  "downPayment": "80000",
  "downPaymentType": "dollar",
  "annualRate": "6.5",
  "loanTermYears": "30",
  "propertyTaxAnnual": "0",
  "homeInsuranceAnnual": "0",
  "pmiMonthly": "0"
}
'

{
  "tool": "mortgage-calculator",
  "tool_version": "1.0.1",
  "outputs": {
    "results": [
      {
        "metric": "Loan Amount",
        "value": "$320,000"
      },
      {
        "metric": "Monthly Principal & Interest",
        "value": "$2,023"
      },
      {
        "metric": "Monthly Tax + Insurance + PMI",
        "value": "$0"
      },
      {
        "metric": "Total Monthly Payment",
        "value": "$2,023"
      },
      {
        "metric": "Total Interest Paid Over Loan",
        "value": "$408,142"
      },
      {
        "metric": "Total Cost",
        "value": "$808,142"
      }
    ]
  },
  "credits_used": 3,
  "credits_remaining": null
}