{
  "generated_at": "2026-04-24T15:01:35.625676+00:00",
  "slug": "gg402-vercel-app-mortgage-calculator",
  "title": "GG402 \u00b7 Mortgage payment and affordability calculator",
  "url": "https://gg402.vercel.app/mortgage_calculator",
  "category": "tools",
  "summary": "Compute mortgage payments, affordability metrics, and full amortization schedules from loan parameters.",
  "seo": {
    "title": "Mortgage Calculator API | Payment & Affordability x402",
    "description": "Calculate mortgage payments, affordability scores, and amortization schedules. 0.01 USDC per call on Base. Home purchase planning tool."
  },
  "use_cases": [
    "Calculate monthly payments for home buyers",
    "Generate amortization schedules for loan comparison",
    "Assess affordability based on income and debt"
  ],
  "ideal_buyer": "Real estate fintech apps and mortgage comparison tools.",
  "example_prompt": "Calculate the monthly payment for a $400,000 30-year mortgage at 6.5% interest with 10% down.",
  "risk_notes": [],
  "pricing_sanity": {
    "flag": "normal",
    "ratio": 1,
    "median_category_atomic": 10000
  },
  "pricing_review_required": false,
  "pricing_decimal_suspect": false,
  "trust_tier": "indexed_external",
  "accepts": [
    {
      "scheme": "exact",
      "network": "base",
      "pay_to": "0x9257cd24721e3c06e9f7655b77c283bcd9652132",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "max_amount_required_atomic": "10000",
      "max_timeout_seconds": 60,
      "mime_type": "application/json",
      "description": "Calculates mortgage payments, affordability, and amortization schedules based on loan details, helping users plan home purchases.",
      "verified": false,
      "hints": {
        "input": {
          "type": "http",
          "method": "POST",
          "bodyType": "json",
          "bodyFields": {
            "loan_amount": {
              "type": "number",
              "required": true,
              "description": "Total loan amount in USD."
            },
            "down_payment": {
              "type": "number",
              "required": false,
              "description": "Down payment amount in USD."
            },
            "interest_rate": {
              "type": "number",
              "required": true,
              "description": "Annual interest rate as a decimal (e.g., 0.045 for 4.5%)."
            },
            "loan_term_years": {
              "type": "number",
              "required": true,
              "description": "Loan term in years."
            }
          }
        },
        "output": {
          "type": "object",
          "required": [
            "monthly_payment",
            "total_interest",
            "amortization_schedule",
            "affordability_score"
          ],
          "properties": {
            "total_interest": {
              "type": "number",
              "description": "Total interest paid over the loan term."
            },
            "monthly_payment": {
              "type": "number",
              "description": "Estimated monthly mortgage payment."
            },
            "affordability_score": {
              "type": "number",
              "description": "Score from 1-10 on loan affordability based on inputs."
            },
            "amortization_schedule": {
              "type": "array",
              "description": "Monthly breakdown of principal and interest."
            }
          }
        }
      }
    }
  ],
  "origin": {
    "slug": "gg402-vercel-app",
    "host": "gg402.vercel.app",
    "title": "x402 API Marketplace | Pay-per-call APIs with Crypto",
    "description": "Discover and integrate paid APIs using the x402 protocol. Micropayments made simple with crypto.",
    "url": "https://gg402.vercel.app"
  },
  "json_ld": {
    "@id": "https://x402all.com/resource/gg402-vercel-app-mortgage-calculator",
    "url": "https://x402all.com/resource/gg402-vercel-app-mortgage-calculator",
    "name": "GG402 \u00b7 Mortgage payment and affordability calculator",
    "@type": "WebAPI",
    "offers": {
      "url": "https://x402all.com/resource/gg402-vercel-app-mortgage-calculator",
      "@type": "Offer",
      "price": "0.01",
      "availability": "https://schema.org/InStock",
      "priceCurrency": "USDC",
      "priceSpecification": {
        "@type": "UnitPriceSpecification",
        "price": "0.010000",
        "unitText": "call",
        "priceCurrency": "USDC"
      },
      "eligibleCustomerType": "Agent",
      "additionalProperty": [
        {
          "@type": "PropertyValue",
          "name": "paymentNetwork",
          "value": "base"
        },
        {
          "@type": "PropertyValue",
          "name": "paymentAsset",
          "value": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
        }
      ]
    },
    "sameAs": "https://gg402.vercel.app/mortgage_calculator",
    "@context": "https://schema.org",
    "provider": {
      "@id": "https://x402all.com/server/gg402-vercel-app",
      "url": "https://gg402.vercel.app",
      "name": "x402 API Marketplace | Pay-per-call APIs with Crypto",
      "@type": "Organization"
    },
    "identifier": "gg402-vercel-app-mortgage-calculator",
    "description": "Calculate mortgage payments, affordability scores, and amortization schedules. 0.01 USDC per call on Base. Home purchase planning tool.",
    "potentialAction": {
      "@type": "BuyAction",
      "target": "https://axon402.com/test-buy?resource=gg402-vercel-app-mortgage-calculator",
      "description": "Test-buy this endpoint on AXON"
    },
    "applicationCategory": "tools"
  },
  "axon_deep_link": "https://axon402.com/test-buy?resource=gg402-vercel-app-mortgage-calculator"
}