# PropPulse Mortgage Calculator & Rates

> PropPulse Mortgage Calculator & Rates is a paid API for AI agents from proppulse.theaslangroupllc.com, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-14).

Calculates mortgage payments, current rates, affordability, and lender options for home purchases across US, UK, Canada, Germany, Australia, and India.

## Facts

- Endpoint: GET https://proppulse.theaslangroupllc.com/api/prop/mortgage
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/proppulse-mortgage-calculator-rates-0c16e369
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_KzwSNV3MUpnLmW5X2T2q3

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability proppulse-mortgage-calculator-rates-0c16e369
```

Example prompt: Can you calculate my monthly mortgage payment for a $450,000 home in California with 20% down, a 30-year fixed rate, and show me the full payment breakdown including total interest and whether I qualify?

## When to prefer this

Use this endpoint when a user needs mortgage payment calculations, current rate lookups, or affordability checks across multiple international jurisdictions (US, UK, CA, DE, AU, IN). Prefer over generic finance APIs when jurisdiction-aware mortgage product types (e.g., UK remortgage, CA amortization period, AU offset account, DE Zinsbindung) are required.

## Known failure modes

- Unsupported jurisdiction or loan type returns error or empty lender list
- Missing required parameters (loan amount or home price) result in 400-level error
- Stale rate data if market rates have changed since last cache update
- Affordability check may be inaccurate without income/debt inputs
- Rate data may not reflect real-time lender offers

## How this service works

Mortgage calculator and current mortgage rates: payment breakdown, loan amount, total interest, affordability check, and lender options — jurisdiction-aware (US 30/15yr fixed, UK fixed-deal/remortgage, CA term/amortization, DE Zinsbindung, AU offset, IN floating). For homebuyer and mortgage agents.

## Output

Returns monthly payment amount with principal/interest/tax/insurance breakdown, current market mortgage rates for the applicable jurisdiction (US 30/15yr fixed, UK fixed-deal/remortgage, CA term/amortization, DE Zinsbindung, AU offset, IN floating), total interest over the loan life, an affordability check, and available lender options matched to the borrower's profile and region.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "zip": {
       "type": "string",
       "description": "legacy alias for location, implies country=US"
      },
      "debt": {
       "type": "string"
      },
      "down": {
       "type": "string"
      },
      "lang": {
       "type": "string",
       "description": "en | es | fr | de | zh | pt | ar"
      },
      "income": {
       "type": "string"
      },
      "country": {
       "type": "string",
       "description": "US | UK | CA | DE | AU | IN (optional)"
      },
      "location": {
       "type": "string",
       "description": "Austin, TX | Manchester | Bengaluru"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "errors": {
     "type": "object",
     "description": "Documented error responses, keyed by HTTP status code",
     "additionalProperties": {
      "type": "object",
      "required": [
       "description"
      ],
      "properties": {
       "example": {
        "type": "object"
       },
       "description": {
        "type": "string"
       }
      }
     }
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "rate_15yr": 6.12,
  "rate_30yr": 6.85,
  "loan_amount": 420000,
  "recommended": "30yr for cashflow flexibility; 15yr to save $108K in interest",
  "monthly_15yr": 3580,
  "monthly_30yr": 2758,
  "total_interest_15yr": 164400,
  "total_interest_30yr": 272880
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/proppulse-mortgage-calculator-rates-0c16e369/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from proppulse.theaslangroupllc.com](https://www.zero.xyz/host/proppulse.theaslangroupllc.com/llms.txt)