15-year vs 30-year mortgage comparison calculator
15-year vs 30-year mortgage comparison calculator. Computes monthly payment and total interest for both loan terms on the same purchase price and down payment, and reports the payment and lifetime-interest tradeoff between them.
10000 (raw units)
price
3
calls / 30d
1
unique payers
2026-08-30
updated
Provider
x402.outpimp.com · discovered, not yet claimed by its owner
Payment (x402 accepts[])
[
{
"scheme": "exact",
"network": "eip155:8453",
"payTo": "0x548eFd4f4d4A5C3669dbb4CBB2B1A637FeeEc5F6",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"amount": "10000",
"maxTimeoutSeconds": 300
},
{
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "APer2AbhckyMWyJanW2MZ2eRLcpL9Lmhks8rkmXfqjRG",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"amount": "10000",
"maxTimeoutSeconds": 300
}
]Output schema
{
"bazaar": {
"info": {
"input": {
"body": {
"downPaymentPercent": 0.2,
"interestRate15": 0.055,
"interestRate30": 0.065,
"purchasePrice": 300000
},
"bodyType": "json",
"method": "POST",
"type": "http"
},
"output": {
"example": {
"data": {
"fifteenYear": {
"monthlyPayment": 1961.0002910907206,
"totalInterest": 112980.05239633351,
"totalPaid": 352980.0523963297
},
"monthlyPaymentDifference": 444.0370347076039,
"params": {
"downPaymentPercent": 0.2,
"interestRate15": 0.055,
"interestRate30": 0.065,
"purchasePrice": 300000
},
"thirtyYear": {
"monthlyPayment": 1516.9632563831167,
"totalInterest": 306106.7722979182,
"totalPaid": 546106.772297922
},
"totalInterestSavings": 193126.7199015847
},
"ok": true
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"properties": {
"downPaymentPercent": {
"default": 0.2,
"description": "Down payment as a fraction of purchase price (0-1). Default 0.2.",
"type": "number"
},
"interestRate15": {
"description": "Annual interest rate for the 15-year loan, as a fraction.",
"type": "number"
},
"interestRate30": {
"description": "Annual interest rate for the 30-year loan, as a fraction.",
"type": "number"
},
"purchasePrice": {
"description": "Home purchase price.",
"type": "number"
}
},
"required": [
"purchasePrice",
"interestRate15",
"interestRate30"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
},
"builder-code": {
"info": {
"a": "x402_api_vendor",
"s": [
"cdp_sdk_server"
]
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false,
"properties": {
"a": {
"description": "App builder code",
"pattern": "^[a-z0-9_]{1,32}$",
"type": "string"
},
"s": {
"description": "Service builder codes",
"items": {
"pattern": "^[a-z0-9_]{1,32}$",
"type": "string"
},
"maxItems": 11,
"type": "array"
},
"w": {
"description": "Wallet builder code",
"pattern": "^[a-z0-9_]{1,32}$",
"type": "string"
}
},
"type": "object"
}
},
"eip2612GasSponsoring": {},
"erc20ApprovalGasSponsoring": {}
}Use it
curl
curl "https://x402.outpimp.com/mortgageComparisonCalculator" # -> 402 Payment Required, accepts[] lists how to pay # retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid
JavaScript
const res = await fetch("https://x402.outpimp.com/mortgageComparisonCalculator");
if (res.status === 402) {
const { accepts } = await res.json();
// pay one of accepts[] via an x402 client, then retry with the payment header
}Python
import httpx
res = httpx.get("https://x402.outpimp.com/mortgageComparisonCalculator")
if res.status_code == 402:
accepts = res.json()["accepts"]
# pay one of accepts[] via an x402 client, then retry with the payment headerMachine-readable
Everything on this page is also available as clean JSON at /resources/8404.json, and this resource appears in /discovery/resources and /discovery/search.