Access Real-Time & Historical Netherlands Antillean Gulden Exchange Rates Using Indices-API

The Netherlands Antillean Gulden (ANG) is a currency that has seen various fluctuations over the years, making it essential for developers and businesses to access real-time and historical exchange rates. With the Indices-API, you can seamlessly integrate exchange rate data into your applications, enabling you to make informed financial decisions. This blog post will guide you through accessing both real-time and historical ANG rates using the Indices-API, detailing the capabilities of the API, its endpoints, and practical use cases.

About Netherlands Antillean Gulden (ANG)

The Netherlands Antillean Gulden (ANG) is the official currency of the former Netherlands Antilles, which consists of several Caribbean islands. The currency is subdivided into 100 cents and is often used in financial transactions within the region. Understanding the exchange rates of ANG against major currencies like USD, EUR, and others is crucial for businesses operating in or trading with the Caribbean. The Indices-API provides a robust solution for accessing this data in real-time and historically.

API Description

The Indices-API is designed to provide developers with access to real-time and historical exchange rate data through a simple and intuitive interface. This API empowers developers to build next-generation applications that require accurate and timely financial data. With its innovative approach to data delivery, the Indices-API transforms how businesses and developers interact with financial information.

By leveraging the capabilities of the Indices-API, you can access a variety of endpoints that cater to different needs, from retrieving the latest exchange rates to analyzing historical trends. The API is built with scalability and performance in mind, ensuring that you can handle large volumes of requests without compromising on speed or accuracy.

Key Features and Endpoints

The Indices-API offers a range of endpoints that allow you to access various types of exchange rate data. Here are some of the key features:

Latest Rates Endpoint: Depending on your subscription plan, this endpoint returns real-time exchange rate data updated every 60 minutes, every 10 minutes, or even more frequently. This feature is essential for applications that require up-to-the-minute financial data.
Historical Rates Endpoint: Access historical rates for most currencies dating back to October 2024. You can query the API for historical rates by appending a specific date in the format YYYY-MM-DD.
Convert Endpoint: This endpoint allows you to convert any amount from one currency to another, making it easy to handle transactions in different currencies.
Time-Series Endpoint: Query the API for daily historical rates between two dates of your choice. This is particularly useful for analyzing trends over time.
Fluctuation Endpoint: Retrieve information about how currencies fluctuate on a day-to-day basis, providing insights into market volatility.
Open/High/Low/Close (OHLC) Price Endpoint: Get the open, high, low, and close prices for a specific time period, which is crucial for technical analysis.
API Key: Your unique API Key is required to access the API, ensuring secure and authorized usage.
API Response: Exchange rates are delivered relative to USD by default, with all data returned in a structured format.
Supported Symbols Endpoint: Access a constantly updated list of all available currencies, ensuring you have the latest information at your fingertips.

List of Symbols

The API provides access to a diverse range of index symbols. For a complete list of all supported symbols and their specifications, refer to the Symbols page. This resource is invaluable for developers looking to integrate multiple currencies into their applications.

API Endpoint Examples and Responses

To illustrate how to use the Indices-API effectively, let's explore some example endpoints and their responses.

Latest Rates Endpoint

Get real-time exchange rates for all available indices.

{
"success": true,
"timestamp": 1782348672,
"base": "USD",
"date": "2026-06-25",
"rates": {
"DOW": 0.00029,
"NASDAQ": 0.00039,
"S&P 500": 0.00024,
"FTSE 100": 0.00058,
"DAX": 0.00448,
"CAC 40": 0.00137,
"NIKKEI 225": 0.0125
},
"unit": "per index"
}

Historical Rates Endpoint

Access historical exchange rates for any date since 1999.

{
"success": true,
"timestamp": 1782262272,
"base": "USD",
"date": "2026-06-24",
"rates": {
"DOW": 0.00028,
"NASDAQ": 0.00038,
"S&P 500": 0.00023,
"FTSE 100": 0.0124,
"DAX": 0.0126,
"CAC 40": 0.0126,
"NIKKEI 225": 0.0126
},
"unit": "per index"
}

Time-series Endpoint

Get exchange rates for a specific time period.

{
"success": true,
"timeseries": true,
"start_date": "2026-06-18",
"end_date": "2026-06-25",
"base": "USD",
"rates": {
"2026-06-18": {
"DOW": 0.00028,
"NASDAQ": 0.00038,
"S&P 500": 0.00023,
"FTSE 100": 0.0124,
"DAX": 0.0126,
"CAC 40": 0.0126,
"NIKKEI 225": 0.0126
},
"2026-06-20": {
"DOW": 0.00029,
"NASDAQ": 0.00039,
"S&P 500": 0.00024,
"FTSE 100": 0.0124,
"DAX": 0.0126,
"CAC 40": 0.0126,
"NIKKEI 225": 0.0126
},
"2026-06-25": {
"DOW": 0.00029,
"NASDAQ": 0.00039,
"S&P 500": 0.00024,
"FTSE 100": 0.0124,
"DAX": 0.0126,
"CAC 40": 0.0126,
"NIKKEI 225": 0.0126
}
},
"unit": "per index"
}

Convert Endpoint

Convert any amount from one commodity to another or to/from USD.

{
"success": true,
"query": {
"from": "USD",
"to": "DOW",
"amount": 1000
},
"info": {
"timestamp": 1782348672,
"rate": 0.00029
},
"result": 0.29,
"unit": "per index"
}

Fluctuation Endpoint

Track rate fluctuations between two dates.

{
"success": true,
"fluctuation": true,
"start_date": "2026-06-18",
"end_date": "2026-06-25",
"base": "USD",
"rates": {
"DOW": {
"start_rate": 0.00028,
"end_rate": 0.00029,
"change": 1.0e-5,
"change_pct": 3.57
},
"NASDAQ": {
"start_rate": 0.00038,
"end_rate": 0.00039,
"change": 1.0e-5,
"change_pct": 2.63
},
"S&P 500": {
"start_rate": 0.0124,
"end_rate": 0.0125,
"change": 0.0001,
"change_pct": 0.81
},
"FTSE 100": {
"start_rate": 0.0124,
"end_rate": 0.0125,
"change": 0.0001,
"change_pct": 0.81
},
"DAX": {
"start_rate": 0.0126,
"end_rate": 0.0126,
"change": 0,
"change_pct": 0
},
"CAC 40": {
"start_rate": 0.0126,
"end_rate": 0.0126,
"change": 0,
"change_pct": 0
},
"NIKKEI 225": {
"start_rate": 0.0126,
"end_rate": 0.0126,
"change": 0,
"change_pct": 0
}
},
"unit": "per index"
}

OHLC (Open/High/Low/Close) Endpoint

Get OHLC data for a specific time period.

{
"success": true,
"timestamp": 1782348672,
"base": "USD",
"date": "2026-06-25",
"rates": {
"DOW": {
"open": 0.00028,
"high": 0.00029,
"low": 0.00027,
"close": 0.00029
},
"NASDAQ": {
"open": 0.00038,
"high": 0.0004,
"low": 0.00037,
"close": 0.00039
},
"S&P 500": {
"open": 0.0124,
"high": 0.0126,
"low": 0.0123,
"close": 0.0125
},
"FTSE 100": {
"open": 0.0124,
"high": 0.0126,
"low": 0.0123,
"close": 0.0125
},
"DAX": {
"open": 0.0126,
"high": 0.0126,
"low": 0.0126,
"close": 0.0126
}
},
"unit": "per index"
}

Bid/Ask Endpoint

Get current bid and ask prices for indices.

{
"success": true,
"timestamp": 1782348672,
"base": "USD",
"date": "2026-06-25",
"rates": {
"DOW": {
"bid": 0.00028,
"ask": 0.00029,
"spread": 1.0e-5
},
"NASDAQ": {
"bid": 0.00038,
"ask": 0.00039,
"spread": 1.0e-5
},
"S&P 500": {
"bid": 0.0124,
"ask": 0.0125,
"spread": 0.0001
},
"FTSE 100": {
"bid": 0.0124,
"ask": 0.0125,
"spread": 0.0001
},
"DAX": {
"bid": 0.0126,
"ask": 0.0126,
"spread": 0
},
"CAC 40": {
"bid": 0.0126,
"ask": 0.0126,
"spread": 0
},
"NIKKEI 225": {
"bid": 0.0126,
"ask": 0.0126,
"spread": 0
}
},
"unit": "per index"
}

Conclusion

Accessing real-time and historical Netherlands Antillean Gulden exchange rates has never been easier, thanks to the powerful capabilities of the Indices-API. By utilizing the various endpoints available, developers can create applications that provide users with accurate financial data, enabling better decision-making in a rapidly changing market. Whether you need the latest rates, historical data, or conversion capabilities, the Indices-API offers a comprehensive solution.

For more detailed information on how to implement these features, refer to the Indices-API Documentation. Additionally, you can explore the Indices-API Supported Symbols page to find all available currencies and indices. By leveraging this API, you can stay ahead in the financial landscape and build innovative applications that meet the needs of your users.

Ready to use Indices-API?

Try it now!

Access Real-Time & Historical Netherlands Antillean Gulden Exchange Rates Using Indices-API