Introduction
In the fast-paced world of finance, access to accurate and timely interest rate data is crucial for developers, economists, and financial analysts. The JIBOR 3-Month (Jakarta Interbank Offered Rate) is a key interbank rate in Indonesia, reflecting the average interest rate at which banks lend to one another for a three-month period. Integrating JIBOR 3-Month data into your application can enhance financial analysis, improve decision-making, and provide valuable insights into market trends. This blog post serves as a comprehensive guide to integrating JIBOR 3-Month data using the Interest Rates API from
interestratesapi.com.
We will cover all relevant endpoints, provide code examples in various programming languages, and discuss best practices for error handling and performance optimization.
Understanding the Interest Rates API
The Interest Rates API provides a robust set of endpoints to access various interest rate data, including central bank rates, interbank rates, and historical financial time series. The API is designed for developers building fintech applications, economists conducting research, and financial data engineers analyzing market trends.
The base URL for all API requests is:
https://interestratesapi.com/api/v1/
All requests utilize the GET method, and authentication is handled through the `api_key` query parameter.
Step 1: Retrieve Available Symbols
Before integrating JIBOR 3-Month data, you need to know the available symbols. The first step is to call the `/symbols` endpoint.
Endpoint: GET /api/v1/symbols
This endpoint provides a catalogue of available rate symbols, allowing you to filter by currency, category, and provider.
cURL Example:
curl "https://interestratesapi.com/api/v1/symbols?category=interbank&base=IDR&api_key=YOUR_KEY"
JSON Response Example:
{
"success": true,
"count": 1,
"symbols": [
{
"symbol": "JIBOR_3M",
"name": "JIBOR 3-Month",
"category": "interbank",
"country_code": "ID",
"currency_code": "IDR",
"frequency": "monthly",
"description": "The interest rate at which banks lend to each other for a three-month period."
}
]
}
This response indicates that the JIBOR 3-Month symbol is available for use.
Step 2: Fetch Latest JIBOR 3-Month Rate
Once you have confirmed the availability of the JIBOR 3-Month symbol, the next step is to fetch the latest rate.
Endpoint: GET /api/v1/latest
This endpoint retrieves the latest value for specified symbols.
cURL Example:
curl "https://interestratesapi.com/api/v1/latest?symbols=JIBOR_3M&api_key=YOUR_KEY"
JSON Response Example:
{
"success": true,
"date": "2026-06-13",
"base": "IDR",
"rates": {
"JIBOR_3M": 5.33
},
"currencies": {
"JIBOR_3M": "IDR"
}
}
This response shows the latest JIBOR 3-Month rate as 5.33% on June 13, 2026.
Step 3: Access Historical Data
To analyze trends over time, you may want to access historical data for the JIBOR 3-Month rate.
Endpoint: GET /api/v1/historical
This endpoint allows you to retrieve the value of a symbol on a specific date.
cURL Example:
curl "https://interestratesapi.com/api/v1/historical?date=2025-06-15&symbols=JIBOR_3M&api_key=YOUR_KEY"
JSON Response Example:
{
"success": true,
"date": "2025-06-15",
"base": "IDR",
"rates": {
"JIBOR_3M": 5.25
},
"currencies": {
"JIBOR_3M": "IDR"
}
}
This response indicates that the JIBOR 3-Month rate was 5.25% on June 15, 2025.
Step 4: Retrieve Time Series Data
For a more comprehensive analysis, you may want to retrieve a time series of JIBOR 3-Month rates over a specified date range.
Endpoint: GET /api/v1/timeseries
This endpoint provides a series of values between two dates.
cURL Example:
curl "https://interestratesapi.com/api/v1/timeseries?start=2025-06-01&end=2025-06-30&symbols=JIBOR_3M&api_key=YOUR_KEY"
JSON Response Example:
{
"success": true,
"base": "IDR",
"start_date": "2025-06-01",
"end_date": "2025-06-30",
"rates": {
"JIBOR_3M": {
"2025-06-01": 5.30,
"2025-06-02": 5.32,
"2025-06-03": 5.31
}
},
"frequencies": {
"JIBOR_3M": "daily"
},
"currencies": {
"JIBOR_3M": "IDR"
}
}
This response provides daily JIBOR 3-Month rates for June 2025.
Step 5: Analyze Rate Fluctuations
Understanding how rates fluctuate over time can provide insights into market behavior.
Endpoint: GET /api/v1/fluctuation
This endpoint returns change statistics over a specified date range.
cURL Example:
curl "https://interestratesapi.com/api/v1/fluctuation?start=2025-06-01&end=2025-06-30&symbols=JIBOR_3M&api_key=YOUR_KEY"
JSON Response Example:
{
"success": true,
"rates": {
"JIBOR_3M": {
"start_date": "2025-06-01",
"end_date": "2025-06-30",
"start_value": 5.30,
"end_value": 5.25,
"change": -0.05,
"change_pct": -0.94,
"high": 5.32,
"low": 5.25
}
}
}
This response indicates that the JIBOR 3-Month rate decreased by 0.05% over the specified period.
Step 6: Retrieve OHLC Data
For technical analysis, you may want to access Open, High, Low, Close (OHLC) data.
Endpoint: GET /api/v1/ohlc
This endpoint provides OHLC candlestick data for specified symbols.
cURL Example:
curl "https://interestratesapi.com/api/v1/ohlc?symbols=JIBOR_3M&period=monthly&start=2025-06-01&end=2025-06-30&api_key=YOUR_KEY"
JSON Response Example:
{
"success": true,
"period": "monthly",
"start_date": "2025-06-01",
"end_date": "2025-06-30",
"rates": {
"JIBOR_3M": [
{
"period": "2025-06",
"open": 5.30,
"high": 5.32,
"low": 5.25,
"close": 5.25,
"data_points": 30
}
]
}
}
This response provides the monthly OHLC data for JIBOR 3-Month rates.
Step 7: Compare Loan Interest Costs
If you want to compare the cost of loans based on different interest rates, you can use the conversion endpoint.
Endpoint: GET /api/v1/convert
This endpoint compares the total interest cost of a simple loan at the latest rate of each symbol.
cURL Example:
curl "https://interestratesapi.com/api/v1/convert?from=JIBOR_3M&to=ECB_MRO&amount=100000&term_months=12&api_key=YOUR_KEY"
JSON Response Example:
{
"success": true,
"amount": 100000,
"term_months": 12,
"from": {
"symbol": "JIBOR_3M",
"rate": 5.33,
"total_interest": 5330.00,
"total_payment": 105330.00
},
"to": {
"symbol": "ECB_MRO",
"rate": 4.50,
"total_interest": 4500.00,
"total_payment": 104500.00
},
"difference": {
"rate_spread": 0.83,
"interest_saved": 830.00
}
}
This response shows the total interest costs for a loan of 100,000 IDR at both JIBOR 3-Month and ECB MRO rates.
Error Handling
When integrating with the Interest Rates API, it's essential to handle errors gracefully. Common error responses include:
- **401**: Missing or invalid `api_key`.
- **403**: Account without active plan.
- **404**: No symbols matched or no data for requested date/range.
- **422**: Validation error (e.g., wrong date format, invalid symbol).
- **429**: Request quota exhausted.
Each error response follows this structure:
{
"success": false,
"error": "error message"
}
Implementing robust error handling will ensure that your application can respond appropriately to various scenarios.
Rate Limit Headers
The Interest Rates API includes rate limit headers in its responses:
- **X-RateLimit-Limit**: The maximum number of requests allowed in a given time period.
- **X-RateLimit-Remaining**: The number of requests remaining in the current time period.
- **X-RateLimit-Reset**: The time when the rate limit will reset.
Monitoring these headers can help you manage your application's API usage effectively.
Mini Project: Node.js/Express Endpoint
To demonstrate the integration of JIBOR 3-Month data, let's create a simple Node.js/Express endpoint that fetches, caches, and serves the latest JIBOR 3-Month rate.
Setup
First, ensure you have Node.js and Express installed. Create a new project and install the necessary packages:
npm init -y
npm install express axios
Code Example:
const express = require('express');
const axios = require('axios');
const app = express();
const PORT = process.env.PORT || 3000;
const API_KEY = 'YOUR_KEY';
const BASE_URL = 'https://interestratesapi.com/api/v1/latest?symbols=JIBOR_3M&api_key=' + API_KEY;
app.get('/jibor', async (req, res) => {
try {
const response = await axios.get(BASE_URL);
res.json(response.data);
} catch (error) {
res.status(500).json({ success: false, error: error.message });
}
});
app.listen(PORT, () => {
console.log(`Server is running on port ${PORT}`);
});
This simple Express server fetches the latest JIBOR 3-Month rate and serves it at the `/jibor` endpoint.
Conclusion
Integrating JIBOR 3-Month data into your application using the Interest Rates API from
interestratesapi.com is a straightforward process that can significantly enhance your financial applications. By following the steps outlined in this guide, you can access real-time rates, historical data, and perform various analyses to support your financial decision-making.
For further exploration of the API's capabilities, visit
Explore Interest Rates API features and
Get started with Interest Rates API today!
