Interest Rate API
Interest Rate is a tool for retrieving current and historical central bank policy interest rates for major economies worldwide. It returns the latest rate along with the central bank name and effective date.
The Interest Rate API provides reliable and fast access to interest rate data through a simple REST interface. Built for developers who need consistent, high-quality results with minimal setup time.
To use Interest 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/interestrateCode Examples
Here are examples of how to call the Interest Rate API in different programming languages:
curl -X GET \
"https://api.apiverve.com/v1/interestrate?country=US" \
-H "X-API-Key: your_api_key_here"const response = await fetch('https://api.apiverve.com/v1/interestrate?country=US', {
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/interestrate?country=US', headers=headers)
data = response.json()
print(data)const https = require('https');
const url = require('url');
const options = {
method: 'GET',
headers: {
'X-API-Key': 'your_api_key_here',
'Content-Type': 'application/json'
}
};
const req = https.request('https://api.apiverve.com/v1/interestrate?country=US', options, (res) => {
let data = '';
res.on('data', (chunk) => data += chunk);
res.on('end', () => console.log(JSON.parse(data)));
});
req.end();<?php
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'https://api.apiverve.com/v1/interestrate?country=US');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'GET');
curl_setopt($ch, CURLOPT_HTTPHEADER, [
'X-API-Key: your_api_key_here',
'Content-Type: application/json'
]);
$response = curl_exec($ch);
curl_close($ch);
$data = json_decode($response, true);
print_r($data);
?>package main
import (
"fmt"
"io"
"net/http"
)
func main() {
req, _ := http.NewRequest("GET", "https://api.apiverve.com/v1/interestrate?country=US", 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))
}require 'net/http'
require 'json'
uri = URI('https://api.apiverve.com/v1/interestrate?country=US')
http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = true
request = Net::HTTP::Get.new(uri)
request['X-API-Key'] = 'your_api_key_here'
request['Content-Type'] = 'application/json'
response = http.request(request)
puts JSON.pretty_generate(JSON.parse(response.body))using System;
using System.Net.Http;
using System.Text;
using System.Threading.Tasks;
class Program
{
static async Task Main(string[] args)
{
using var client = new HttpClient();
client.DefaultRequestHeaders.Add("X-API-Key", "your_api_key_here");
var response = await client.GetAsync("https://api.apiverve.com/v1/interestrate?country=US");
response.EnsureSuccessStatusCode();
var responseBody = await response.Content.ReadAsStringAsync();
Console.WriteLine(responseBody);
}
}Authentication
The Interest Rate API requires authentication via API key. Include your API key in the request header:
X-API-Key: your_api_key_hereInteractive API Playground
Test the Interest Rate API directly in your browser with live requests and responses.
Parameters
The Interest Rate API supports multiple query options. Use one of the following:
Option 1: Get Current Interest Rate
| Parameter | Type | Required | Description | Default | Example |
|---|---|---|---|---|---|
country | string | required | 2-letter country code Length: 2 - 2 charsSupported values: AUBRCACHCN | - |
Option 2: Get Historical Interest Rate
| Parameter | Type | Required | Description | Default | Example |
|---|---|---|---|---|---|
country | string | required | 2-letter country code Length: 2 - 2 charsSupported values: AUBRCACHCN | - | |
datePremium | string | required | Month to retrieve in YYYY-MM format | - |
Response
The Interest Rate API returns responses in JSON, XML, YAML, and CSV formats:
Example Responses
{
"status": "ok",
"error": null,
"data": {
"country": "US",
"countryName": "United States",
"centralBank": "Federal Reserve",
"rate": 4.5,
"date": "2026-02-05",
"lastUpdated": "2026-02-05T05:00:00.000Z",
"lastChanged": "2026-01-29",
"change": -0.25,
"changeDirection": "down",
"previousRate": 4.75
}
}<?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>
<country>US</country>
<countryName>United States</countryName>
<centralBank>Federal Reserve</centralBank>
<rate>4.5</rate>
<date>2026-02-05</date>
<lastUpdated>2026-02-05T05:00:00.000Z</lastUpdated>
<lastChanged>2026-01-29</lastChanged>
<change>-0.25</change>
<changeDirection>down</changeDirection>
<previousRate>4.75</previousRate>
</data>
</response>
status: ok
error: null
data:
country: US
countryName: United States
centralBank: Federal Reserve
rate: 4.5
date: '2026-02-05'
lastUpdated: '2026-02-05T05:00:00.000Z'
lastChanged: '2026-01-29'
change: -0.25
changeDirection: down
previousRate: 4.75
| key | value |
|---|---|
| country | US |
| countryName | United States |
| centralBank | Federal Reserve |
| rate | 4.5 |
| date | 2026-02-05 |
| lastUpdated | 2026-02-05T05:00:00.000Z |
| lastChanged | 2026-01-29 |
| change | -0.25 |
| changeDirection | down |
| previousRate | 4.75 |
Response Structure
All API responses follow a consistent structure with the following fields:
| Field | Type | Description | Example |
|---|---|---|---|
status | string | Indicates whether the request was successful ("ok") or failed ("error") | ok |
error | string | null | Contains error message if status is "error", otherwise null | null |
data | object | null | Contains the API response data if successful, otherwise null | {...} |
Learn more about response formats →
Response Data Fields
When the request is successful, the data object contains the following fields:
| Field | Type | Sample Value | Description |
|---|---|---|---|
country | string | Two-letter ISO country code for the nation | |
countryName | string | Full name of the country in English | |
centralBank | string | Name of the central bank managing monetary policy | |
rate | number | Central bank policy interest rate for the requested period | |
date | string | Exact date of the rate observation | |
lastUpdated | string | ISO timestamp of the last data refresh update | |
lastChangedPremium | string | Date when the rate was last changed | |
changePremium | number | Size of the last rate change in percentage points | |
changeDirection | string | Direction of last change: up, down, or unchanged | |
previousRatePremium | number | Rate before the last change |
Headers
Required and optional headers for Interest Rate API requests:
| Header Name | Required | Example Value | Description |
|---|---|---|---|
X-API-Key | required | your_api_key_here | Your APIVerve API key. Found in your dashboard under API Keys. |
Accept | optional | application/json | Specify response format: application/json (default), application/xml, or application/yaml |
User-Agent | optional | MyApp/1.0 | Identifies your application for analytics and debugging purposes |
X-Request-ID | optional | req_123456789 | Custom request identifier for tracking and debugging requests |
Cache-Control | optional | no-cache | Control caching behavior for the request and response |
GraphQL AccessALPHA
Access Interest Rate through GraphQL to combine it with other API calls in a single request. Query only the interest 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/graphqlquery {
interestrate(
input: {
country: "US"
}
) {
country
countryName
centralBank
rate
date
lastUpdated
lastChanged
change
changeDirection
previousRate
}
}Note: Authentication is handled via the x-api-key header in your GraphQL request, not as a query parameter.
CORS Support
The Interest Rate API supports Cross-Origin Resource Sharing (CORS) with wildcard configuration, allowing you to call Interest Rate directly from browser-based applications without proxy servers.
| CORS Header | Value | Description |
|---|---|---|
Access-Control-Allow-Origin | * | Accepts requests from any origin |
Access-Control-Allow-Methods | * | Accepts any HTTP method |
Access-Control-Allow-Headers | * | Accepts any request headers |
Browser Usage: You can call Interest Rate directly from JavaScript running in the browser without encountering CORS errors. No proxy server or additional configuration needed.
Rate Limiting
Interest Rate API requests are subject to rate limiting based on your subscription plan. These limits ensure fair usage and maintain service quality for all Interest Rate users.
| Plan | Rate Limit | Description |
|---|---|---|
| Free | 5 requests/min | Hard rate limit enforced - exceeding will return 429 errors |
| Starter | No Limit | Production ready - standard traffic priority |
| Pro | No Limit | Production ready - preferred traffic priority |
| Mega | No Limit | Production ready - highest traffic priority |
Learn more about rate limiting →
Rate Limit Headers
When rate limits apply, each Interest Rate response includes headers to help you track your usage:
| Header | Description |
|---|---|
X-RateLimit-Limit | Maximum number of requests allowed per time window |
X-RateLimit-Remaining | Number of requests remaining in the current window |
X-RateLimit-Reset | Unix timestamp when the rate limit window resets |
Handling Rate Limits
Free Plan: When you exceed your rate limit, Interest Rate returns a 429 Too Many Requests status code. Your application should implement appropriate backoff logic to handle this gracefully.
Paid Plans: No rate limiting or throttling applied. All paid plans (Starter, Pro, Mega) are production-ready.
Best Practices for Interest Rate:
- Monitor the rate limit headers to track your Interest Rate usage (Free plan only)
- Cache interest rate responses where appropriate to reduce API calls
- Upgrade to Pro or Mega for guaranteed no-throttle Interest Rate performance
Note: Interest Rate rate limits are separate from credit consumption. You may have credits remaining but still hit rate limits when using Interest Rate on Free tier.
Error Codes
The Interest Rate API uses standard HTTP status codes to indicate success or failure:
| Code | Message | Description | Solution |
|---|---|---|---|
200 | OK | Request successful, data returned | No action needed - request was successful |
400 | Bad Request | Invalid request parameters or malformed request | Check required parameters and ensure values match expected formats |
401 | Unauthorized | Missing or invalid API key | Include x-api-key header with valid API key from dashboard |
403 | Forbidden | API key lacks permission or insufficient credits | Check credit balance in dashboard or upgrade plan |
429 | Too Many Requests | Rate limit exceeded (Free: 5 req/min) | Implement request throttling or upgrade to paid plan |
500 | Internal Server Error | Server error occurred | Retry request after a few seconds, contact support if persists |
503 | Service Unavailable | API temporarily unavailable | Wait and retry, check status page for maintenance updates |
Learn more about error handling →
Need help? Contact support with your X-Request-ID for assistance.
Integrate Interest Rate with SDKs
Get started quickly with official Interest Rate SDKs for your preferred language. Each library handles authentication, request formatting, and error handling automatically.
Available for Node.js, Python, C#/.NET, and Android/Java. All SDKs are open source and regularly updated.
Integrate Interest Rate with No-Code API Tools
Connect the Interest Rate API to your favorite automation platform without writing code. Build workflows that leverage interest rate data across thousands of apps.





All platforms use your same API key to access Interest Rate. Visit our integrations hub for step-by-step setup guides.
Frequently Asked Questions
How do I get an API key for Interest Rate?
How many credits does Interest Rate cost?
Each successful Interest Rate API call consumes credits based on plan tier. Check the pricing section above for the exact credit cost. Failed requests and errors don't consume credits, so you only pay for successful interest rate lookups.
Can I use Interest Rate in production?
The free plan is for testing and development only. For production use of Interest Rate, upgrade to a paid plan (Starter, Pro, or Mega) which includes commercial use rights, no attribution requirements, and guaranteed uptime SLAs. All paid plans are production-ready.
Can I use Interest Rate from a browser?
What happens if I exceed my Interest Rate credit limit?
When you reach your monthly credit limit, Interest Rate API requests will return an error until you upgrade your plan or wait for the next billing cycle. You'll receive notifications at 80% and 95% usage to give you time to upgrade if needed.



