Index onlineMerchant portal
Api Endpoint

Saylor Innovations Mortgage Pay

Calculate fixed-payment mortgage math from principal, annual percentage rate, and term months, returning payment, total paid, total interest, formula, and a clear exclusion of taxes, insurance, fees, and underwriting.

Open interactive test console

Offering

Provider
saylorinnovations.com
Method
GET
Offering type
Api Endpoint
Transport type
http
Category
Financial Analysis
Delivery
Not provided
Pricing model
Not provided
x402 version
2

Endpoint context

URL
https://saylorinnovations.com/api/realestate/mortgage
MIME type
application/json
First seen
2026-10-16T01:51:51.176Z
Last seen
Tags
realestate, mortgage, fixed-payment, calculator, monthly, real-estate, property, ltv

Website

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1
0.01 USDC
Atomic price: 10000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Payment option 2
0.01 USDC
Atomic price: 10000 · Network: eip155:137 · Asset: USDC · Scheme: exact
Payment option 3
0.01 USDC
Atomic price: 10000 · Network: eip155:42161 · Asset: USDC · Scheme: exact
Payment option 4
0.01 USDC
Atomic price: 10000 · Network: solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · Asset: USDC · Scheme: exact
Payment option 5
10000 atomic units
Atomic price: 10000 · Network: solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · Asset: Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB · Scheme: exact
Raw x402 terms
[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "10000",
    "payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa"
  },
  {
    "scheme": "exact",
    "network": "eip155:137",
    "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
    "amount": "10000",
    "payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa"
  },
  {
    "scheme": "exact",
    "network": "eip155:42161",
    "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
    "amount": "10000",
    "payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa"
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "10000",
    "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7"
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "asset": "Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB",
    "amount": "10000",
    "payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7"
  }
]

Observed health

Status
Healthy
Latest latency
129 ms
Average latency
755 ms
HTTP status
402
Last checked
Reachability
100% over 11 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string",
      "const": "http"
    },
    "method": {
      "type": "string",
      "enum": [
        "GET",
        "POST",
        "PUT",
        "PATCH",
        "DELETE",
        "HEAD"
      ]
    },
    "queryParams": {
      "type": "object",
      "properties": {
        "principal": {
          "type": "string",
          "description": "required positive loan amount (query)"
        },
        "apr": {
          "type": "string",
          "description": "required annual percentage rate from 0 to 100 (query)"
        },
        "months": {
          "type": "string",
          "description": "required integer term from 1 to 1200 months (query)"
        }
      },
      "required": [
        "principal",
        "apr",
        "months"
      ]
    }
  },
  "required": [
    "type",
    "method",
    "queryParams"
  ],
  "additionalProperties": false
}

Output schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string",
      "const": "json"
    },
    "description": {
      "type": "string"
    },
    "example": {
      "type": "object",
      "additionalProperties": true,
      "description": "Output fields observed in live endpoint responses; optionality and values can vary by record.",
      "properties": {
        "principal": {
          "type": "number",
          "description": "Starting principal amount"
        },
        "annual_rate_percent": {
          "type": "number",
          "description": "Annual rate as a percentage"
        },
        "months": {
          "type": "number",
          "description": "Number of months"
        },
        "monthly_payment": {
          "type": "number",
          "description": "Monthly payment amount"
        },
        "total_paid": {
          "type": "number",
          "description": "Total paid"
        },
        "total_interest": {
          "type": "number",
          "description": "Total interest"
        },
        "formula": {
          "type": "string",
          "description": "Formula used for the calculation"
        },
        "scope_note": {
          "type": "string",
          "description": "What this data covers and what it leaves out"
        }
      },
      "required": [
        "principal",
        "annual_rate_percent",
        "months",
        "monthly_payment",
        "scope_note"
      ]
    }
  },
  "required": [
    "type"
  ]
}