Mortgage Rate API

Overview

To use Mortgage Rate, you need an API key. You can get one by creating a free account and visiting your dashboard.

GET Endpoint

https://api.apiverve.com/v1/mortgagerate

Example

How to call the Mortgage Rate API in different programming languages.

curl -X GET \
  "https://api.apiverve.com/v1/mortgagerate?type=30year&year=2023&month=6" \
  -H "X-API-Key: your_api_key_here"

const response = await fetch('https://api.apiverve.com/v1/mortgagerate?type=30year&year=2023&month=6', {
  method: 'GET',
  headers: {
    'X-API-Key': 'your_api_key_here',
    'Content-Type': 'application/json'
  }
});

const data = await response.json();
console.log(data);

import requests

headers = {
    'X-API-Key': 'your_api_key_here',
    'Content-Type': 'application/json'
}

response = requests.get('https://api.apiverve.com/v1/mortgagerate?type=30year&year=2023&month=6', headers=headers)

data = response.json()
print(data)

package main

import (
    "fmt"
    "io"
    "net/http"

)

func main() {
    req, _ := http.NewRequest("GET", "https://api.apiverve.com/v1/mortgagerate?type=30year&year=2023&month=6", nil)

    req.Header.Set("X-API-Key", "your_api_key_here")
    req.Header.Set("Content-Type", "application/json")

    client := &http.Client{}
    resp, err := client.Do(req)
    if err != nil {
        panic(err)
    }
    defer resp.Body.Close()

    body, _ := io.ReadAll(resp.Body)
    fmt.Println(string(body))
}

{
  "status": "ok",
  "error": null,
  "data": {
    "rateType": "30year",
    "name": "30-Year Fixed Rate Mortgage",
    "term": 30,
    "type": "fixed",
    "country": "US",
    "year": 2023,
    "month": 6,
    "count": 4,
    "rates": [
      {
        "week": "2023-06-01",
        "rate": 6.79
      },
      {
        "week": "2023-06-08",
        "rate": 6.71
      },
      {
        "week": "2023-06-15",
        "rate": 6.69
      },
      {
        "week": "2023-06-22",
        "rate": 6.67
      }
    ],
    "change1w": -0.02,
    "changeDirection": "down",
    "previousRate": 6.69,
    "previousDate": "2023-06-15"
  }
}

Authentication

The Mortgage Rate API requires authentication via API key. Include your API key in the request header:

X-API-Key: your_api_key_here

Learn more about authentication →

Interactive API Playground

Test the Mortgage Rate API directly in your browser with live requests and responses.

Parameters

The following parameters are available for the Mortgage Rate API:

Response

The Mortgage Rate API returns responses in JSON, XML, YAML, and CSV formats. The JSON response is shown in the Example section above; alternative formats below.

Other Response Formats

<?xml version="1.0" encoding="UTF-8"?>
<response>
  <status>ok</status>
  <error xsi:nil="true" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"/>
  <data>
    <rateType>30year</rateType>
    <name>30-Year Fixed Rate Mortgage</name>
    <term>30</term>
    <type>fixed</type>
    <country>US</country>
    <year>2023</year>
    <month>6</month>
    <count>4</count>
    <rates>
      <rate>
        <week>2023-06-01</week>
        <rate>6.79</rate>
      </rate>
      <rate>
        <week>2023-06-08</week>
        <rate>6.71</rate>
      </rate>
      <rate>
        <week>2023-06-15</week>
        <rate>6.69</rate>
      </rate>
      <rate>
        <week>2023-06-22</week>
        <rate>6.67</rate>
      </rate>
    </rates>
    <change1w>-0.02</change1w>
    <changeDirection>down</changeDirection>
    <previousRate>6.69</previousRate>
    <previousDate>2023-06-15</previousDate>
  </data>
</response>

status: ok
error: null
data:
  rateType: 30year
  name: 30-Year Fixed Rate Mortgage
  term: 30
  type: fixed
  country: US
  year: 2023
  month: 6
  count: 4
  rates:
    - week: '2023-06-01'
      rate: 6.79
    - week: '2023-06-08'
      rate: 6.71
    - week: '2023-06-15'
      rate: 6.69
    - week: '2023-06-22'
      rate: 6.67
  change1w: -0.02
  changeDirection: down
  previousRate: 6.69
  previousDate: '2023-06-15'

Response Structure

All API responses follow a consistent structure with the following fields:

Learn more about response formats →

Response Data Fields

When the request is successful, the data object contains the following fields:

Headers

Only X-API-Key is required. Optional headers include Accept for response format negotiation (JSON, XML, or YAML), User-Agent, and X-Request-ID for request tracing. See all request headers →

GraphQL AccessALPHA

Access Mortgage Rate through GraphQL to combine it with other API calls in a single request. Query only the mortgage rate data you need with precise field selection, and orchestrate complex data fetching workflows.

Credit Cost: Each API called in your GraphQL query consumes its standard credit cost.

POST https://api.apiverve.com/v1/graphql

query {
  mortgagerate(
    input: {
      type: "30year"
      year: 2023
      month: 6
    }
  ) {
    rateType
    name
    term
    type
    country
    year
    month
    count
    rates
    change1w
    changeDirection
    previousRate
    previousDate
  }
}

Note: Authentication is handled via the x-api-key header in your GraphQL request, not as a query parameter.

CORS Support

The Mortgage Rate API accepts cross-origin requests from any origin, so it can be called directly from browser-based applications without a proxy. See CORS support →

Rate Limiting

Mortgage Rate requests are throttled per minute on the Free plan and unthrottled on paid plans. Exceeding the limit returns 429 Too Many Requests; rate-limit usage is reported in the X-RateLimit-Limit, X-RateLimit-Remaining, and X-RateLimit-Reset response headers. See per-plan limits and best practices →

Error Codes

The Mortgage Rate API uses standard HTTP status codes — 200 on success, 400 for invalid parameters, 401 for missing or invalid keys, 403 for insufficient credits, 429 for rate-limit exhaustion, and 500/503 for server-side issues. Each error response includes an X-Request-ID header you can quote when contacting support. See full error handling guide →

SDKs for Mortgage Rate

Official Mortgage Rate packages on npm, PyPI, NuGet, and JitPack — plus a Postman collection and an OpenAPI spec. See the SDK guide →

JitPack

No-Code Integrations

Mortgage Rate works with Zapier, Make, Pipedream, n8n, and Power Automate using the same API key. See setup guides →

Zapier

Make

Pipedream

n8n

Power Automate

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