curl --request POST \
  --url https://api.iotools.cloud/v1/tool/loan-affordability-calculator \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "grossIncome": "6000",
  "existingDebts": "500",
  "interestRate": "6",
  "loanTerm": "30",
  "downPayment": "0",
  "loanType": "mortgage"
}
'

{
  "tool": "loan-affordability-calculator",
  "tool_version": "1.0.1",
  "outputs": {
    "results": [
      {
        "metric": "Max Affordable Loan Amount",
        "value": "$276,874"
      },
      {
        "metric": "Max Monthly Payment",
        "value": "$1,660"
      },
      {
        "metric": "Down Payment",
        "value": "$0"
      },
      {
        "metric": "Max Purchase Price",
        "value": "$276,874"
      },
      {
        "metric": "Total of Payments",
        "value": "$597,600"
      },
      {
        "metric": "Total Interest Paid",
        "value": "$320,726"
      },
      {
        "metric": "Front-End DTI Limit",
        "value": "28%"
      },
      {
        "metric": "Back-End DTI Limit",
        "value": "36%"
      },
      {
        "metric": "Limiting Factor",
        "value": "Back-End DTI (existing debts)"
      }
    ]
  },
  "credits_used": 3,
  "credits_remaining": null
}