curl --request POST \
  --url https://api.iotools.cloud/v1/tool/bond-yield-to-maturity-calculator \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "bondPrice": "950",
  "faceValue": "1000",
  "couponRate": "5",
  "years": "10",
  "frequency": "2",
  "currency": "USD"
}
'

{
  "tool": "bond-yield-to-maturity-calculator",
  "tool_version": "1.0.1",
  "outputs": {
    "summary": [
      {
        "metric": "Current Bond Price",
        "value": "$950.00"
      },
      {
        "metric": "Face Value",
        "value": "$1,000.00"
      },
      {
        "metric": "Annual Coupon Rate",
        "value": "5.00%"
      },
      {
        "metric": "Annual Coupon Payment",
        "value": "$50.00"
      },
      {
        "metric": "Payment Frequency",
        "value": "Semi-Annually"
      },
      {
        "metric": "Years to Maturity",
        "value": "10"
      },
      {
        "metric": "Price Status",
        "value": "Discount to Face Value"
      },
      {
        "metric": "Current Yield",
        "value": "+5.263%"
      },
      {
        "metric": "Approximate Yield to Maturity",
        "value": "+5.641%"
      },
      {
        "metric": "Yield to Maturity (Precise, Annual)",
        "value": "+5.662%"
      },
      {
        "metric": "Periodic Yield to Maturity",
        "value": "+2.831%"
      },
      {
        "metric": "Capital Gain/Loss at Maturity",
        "value": "$50.00"
      },
      {
        "metric": "Capital Gain/Loss %",
        "value": "+5.26%"
      },
      {
        "metric": "Total Coupon Interest Over Term",
        "value": "$500.00"
      },
      {
        "metric": "Total Return at Maturity",
        "value": "$550.00"
      },
      {
        "metric": "Total Return %",
        "value": "+57.89%"
      }
    ],
    "schedule": [
      {
        "year": "1",
        "coupon-received": "$50.00",
        "pv-of-year-s-cash-flows": "$47.95",
        "cumulative-pv": "$47.95"
      },
      {
        "year": "2",
        "coupon-received": "$50.00",
        "pv-of-year-s-cash-flows": "$45.35",
        "cumulative-pv": "$93.30"
      },
      {
        "year": "3",
        "coupon-received": "$50.00",
        "pv-of-year-s-cash-flows": "$42.89",
        "cumulative-pv": "$136.19"
      },
      {
        "year": "4",
        "coupon-received": "$50.00",
        "pv-of-year-s-cash-flows": "$40.56",
        "cumulative-pv": "$176.75"
      },
      {
        "year": "5",
        "coupon-received": "$50.00",
        "pv-of-year-s-cash-flows": "$38.36",
        "cumulative-pv": "$215.11"
      },
      {
        "year": "6",
        "coupon-received": "$50.00",
        "pv-of-year-s-cash-flows": "$36.27",
        "cumulative-pv": "$251.38"
      },
      {
        "year": "7",
        "coupon-received": "$50.00",
        "pv-of-year-s-cash-flows": "$34.30",
        "cumulative-pv": "$285.69"
      },
      {
        "year": "8",
        "coupon-received": "$50.00",
        "pv-of-year-s-cash-flows": "$32.44",
        "cumulative-pv": "$318.13"
      },
      {
        "year": "9",
        "coupon-received": "$50.00",
        "pv-of-year-s-cash-flows": "$30.68",
        "cumulative-pv": "$348.81"
      },
      {
        "year": "10",
        "coupon-received": "$50.00",
        "pv-of-year-s-cash-flows": "$601.19",
        "cumulative-pv": "$950.00"
      }
    ]
  },
  "credits_used": 3,
  "credits_remaining": null
}