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API Documentation

RESTful API for mortgage rate data and lender information

Base URL
https://mortgage-rate-monitor.vercel.app
Version
v1.0

Endpoints

GET

/api/lenders

Get a list of lenders with filtering and pagination

Parameters

lender_typestring

Filter by type (national, regional, state, local, credit_union, online)

statestring

Filter by state (e.g., CA, TX, FL)

loan_typestring

Filter by loan type (conventional, fha, va, usda, jumbo)

termnumber

Filter by loan term in years (30, 15, 10)

sortstring

Sort by field (rate, apr, rating, reviews, name)

limitnumber

Number of results (default: 20, max: 100)

offsetnumber

Pagination offset (default: 0)

Response

{
  "lenders": [...],
  "total": 42,
  "limit": 20,
  "offset": 0
}

Example Request

/api/lenders?lender_type=national&loan_type=conventional&term=30&sort=rate&limit=10

Getting Started

Authentication

Currently, no authentication is required for public endpoints. Rate limits apply:

  • 100 requests per minute per IP
  • 1000 requests per hour per IP

Rate Limiting

API responses include rate limit headers:

X-RateLimit-Limit: 100
X-RateLimit-Remaining: 95
X-RateLimit-Reset: 1699999999

Error Handling

The API uses standard HTTP status codes:

  • 200 - Success
  • 400 - Bad Request
  • 404 - Not Found
  • 429 - Rate Limit Exceeded
  • 500 - Server Error

Code Examples

JavaScript/Node.js

const response = await fetch(
  'https://mortgage-rate-monitor.vercel.app/api/lenders?loan_type=conventional'
);
const data = await response.json();
console.log(data.lenders);

Python

import requests

response = requests.get(
    'https://mortgage-rate-monitor.vercel.app/api/lenders',
    params={'loan_type': 'conventional'}
)
data = response.json()
print(data['lenders'])

cURL

curl -X GET "https://mortgage-rate-monitor.vercel.app/api/lenders?loan_type=conventional" \
     -H "Accept: application/json"