Retrieve Hong Kong Dollar (HKD) Historical Prices using this API

In today's rapidly evolving financial landscape, the ability to access and analyze historical prices of currencies and metals is crucial for developers and analysts alike. One such currency that plays a significant role in the global market is the Hong Kong Dollar (HKD). This blog post will explore how to retrieve historical prices for HKD using the Metals-API, a powerful tool that provides real-time and historical data for various metals and currencies.

Metals-API Information

About Hong Kong Dollar (HKD)

The Hong Kong Dollar (HKD) is the official currency of Hong Kong and is widely used in international trade and finance. As a key player in the Asian financial markets, HKD's value is influenced by various factors, including economic performance, interest rates, and geopolitical events. In recent years, the digital transformation of financial markets has led to significant advancements in how data is collected, analyzed, and utilized. The integration of smart technology and data analytics has revolutionized the way traders and investors access information, enabling them to make informed decisions based on real-time data.

With the rise of technological innovation, the demand for accurate and timely data has never been higher. The Metals-API stands at the forefront of this transformation, providing developers with the tools necessary to build next-generation applications that leverage real-time metals data. By utilizing the Metals-API, developers can gain insights into market trends, track fluctuations, and analyze historical data, all of which are essential for making strategic financial decisions.

API Description

The Metals-API is designed to empower developers by providing a comprehensive suite of endpoints that deliver real-time and historical data for various metals and currencies. This API is particularly valuable for those looking to integrate financial data into their applications, offering a range of functionalities that cater to different needs.

One of the standout features of the Metals-API is its ability to provide real-time exchange rate data, updated at intervals depending on the subscription plan. This ensures that users have access to the most current information available, which is critical for making timely trading decisions. Additionally, the API offers historical rates dating back to 2019, allowing users to analyze trends over time and make predictions based on past performance.

Key Features and Endpoints

The Metals-API includes a variety of endpoints, each designed to serve specific purposes. Here are some of the key features:

• Latest Rates Endpoint: This endpoint provides real-time exchange rate data for metals and currencies, updated every 60 minutes, every 10 minutes, or more frequently based on the user's subscription plan. This feature is essential for traders who need to react quickly to market changes.
• Historical Rates Endpoint: Users can access historical rates for most currencies, including HKD, dating back to 2019. By appending a specific date in the format YYYY-MM-DD, developers can query the API for historical data, enabling them to analyze trends and make informed decisions.
• Bid And Ask Endpoint: This powerful feature allows users to retrieve real-time bid and ask prices for metals. Understanding the bid-ask spread is crucial for traders, as it indicates the liquidity of a market and helps in making better trading decisions.
• Convert Endpoint: The Metals-API includes a currency conversion endpoint, allowing users to convert amounts from one currency to another. This is particularly useful for traders dealing with multiple currencies, as it simplifies the process of calculating values in different denominations.
• Time-Series Endpoint: This endpoint enables users to query the API for daily historical rates between two specified dates. This feature is invaluable for analysts looking to study price movements over specific time frames.
• Fluctuation Endpoint: Users can track how currencies fluctuate on a day-to-day basis using this endpoint. By providing information on the changes in rates over time, it helps traders understand market volatility.
• Carat Endpoint: For those interested in gold rates, the carat endpoint allows users to retrieve information about gold prices by carat. This is particularly useful for jewelers and investors in precious metals.
• Lowest/Highest Price Endpoint: This endpoint allows users to query the API for the lowest and highest prices of metals over a specified period, providing insights into market extremes.
• Open/High/Low/Close (OHLC) Price Endpoint: Users can access the open, high, low, and close prices for a specific time period, which is essential for technical analysis and trading strategies.
• Historical LME Endpoint: This endpoint provides access to historical rates for LME symbols dating back to 2008, allowing users to analyze long-term trends in the metals market.
• API Key: Each user is assigned a unique API key, which must be included in the API requests to authenticate access. This ensures secure and controlled access to the API's features.
• API Response: The Metals-API delivers exchange rates relative to USD by default, with all data returned in a structured JSON format. This makes it easy for developers to parse and utilize the data in their applications.
• Available Endpoints: The API offers a total of 14 endpoints, each providing different functionalities to cater to various user needs.
• Supported Symbols Endpoint: This constantly updated endpoint returns all available currencies and metals, ensuring users have access to the latest information.
• News Endpoint: Users can retrieve the latest news articles related to various metals, keeping them informed about market developments and trends.

List of Symbols

The Metals-API provides access to a comprehensive range of metal symbols. For a complete list of all supported symbols and their specifications, refer to the Metals-API Supported Symbols page. This resource is invaluable for developers looking to integrate specific metals into their applications.

API Endpoint Examples and Responses

Understanding the API responses is crucial for developers looking to implement the Metals-API effectively. Below are examples of various endpoints and their corresponding JSON responses:

Latest Rates Endpoint

Get real-time exchange rates for all available metals:

{
"success": true,
"timestamp": 1772842880,
"base": "USD",
"date": "2026-03-07",
"rates": {
"XAU": 0.000482,
"XAG": 0.03815,
"XPT": 0.000912,
"XPD": 0.000744,
"XCU": 0.294118,
"XAL": 0.434783,
"XNI": 0.142857,
"XZN": 0.344828
},
"unit": "per troy ounce"
}

Historical Rates Endpoint

Access historical exchange rates for any date since 1999:

{
"success": true,
"timestamp": 1772756480,
"base": "USD",
"date": "2026-03-06",
"rates": {
"XAU": 0.000485,
"XAG": 0.03825,
"XPT": 0.000915,
"XPD": 0.000748
},
"unit": "per troy ounce"
}

Time-series Endpoint

Get exchange rates for a specific time period:

{
"success": true,
"timeseries": true,
"start_date": "2026-02-28",
"end_date": "2026-03-07",
"base": "USD",
"rates": {
"2026-02-28": {
"XAU": 0.000485,
"XAG": 0.03825,
"XPT": 0.000915
},
"2026-03-02": {
"XAU": 0.000483,
"XAG": 0.0382,
"XPT": 0.000913
},
"2026-03-07": {
"XAU": 0.000482,
"XAG": 0.03815,
"XPT": 0.000912
}
},
"unit": "per troy ounce"
}

Convert Endpoint

Convert any amount from one metal to another or to/from USD:

{
"success": true,
"query": {
"from": "USD",
"to": "XAU",
"amount": 1000
},
"info": {
"timestamp": 1772842880,
"rate": 0.000482
},
"result": 0.482,
"unit": "troy ounces"
}

Fluctuation Endpoint

Track rate fluctuations between two dates:

{
"success": true,
"fluctuation": true,
"start_date": "2026-02-28",
"end_date": "2026-03-07",
"base": "USD",
"rates": {
"XAU": {
"start_rate": 0.000485,
"end_rate": 0.000482,
"change": -3.0e-6,
"change_pct": -0.62
},
"XAG": {
"start_rate": 0.03825,
"end_rate": 0.03815,
"change": -0.0001,
"change_pct": -0.26
},
"XPT": {
"start_rate": 0.000915,
"end_rate": 0.000912,
"change": -3.0e-6,
"change_pct": -0.33
}
},
"unit": "per troy ounce"
}

OHLC (Open/High/Low/Close) Endpoint

Get OHLC data for a specific time period:

{
"success": true,
"timestamp": 1772842880,
"base": "USD",
"date": "2026-03-07",
"rates": {
"XAU": {
"open": 0.000485,
"high": 0.000487,
"low": 0.000481,
"close": 0.000482
},
"XAG": {
"open": 0.03825,
"high": 0.0383,
"low": 0.0381,
"close": 0.03815
},
"XPT": {
"open": 0.000915,
"high": 0.000918,
"low": 0.00091,
"close": 0.000912
}
},
"unit": "per troy ounce"
}

Bid/Ask Endpoint

Get current bid and ask prices for metals:

{
"success": true,
"timestamp": 1772842880,
"base": "USD",
"date": "2026-03-07",
"rates": {
"XAU": {
"bid": 0.000481,
"ask": 0.000483,
"spread": 2.0e-6
},
"XAG": {
"bid": 0.0381,
"ask": 0.0382,
"spread": 0.0001
},
"XPT": {
"bid": 0.000911,
"ask": 0.000913,
"spread": 2.0e-6
}
},
"unit": "per troy ounce"
}

Conclusion

In conclusion, the Metals-API offers a robust solution for developers looking to access historical prices and real-time data for the Hong Kong Dollar (HKD) and various metals. By leveraging the API's extensive features, including the latest rates, historical data, and conversion capabilities, developers can create powerful applications that provide valuable insights into market trends and fluctuations.

As the financial landscape continues to evolve, the importance of accurate and timely data cannot be overstated. The Metals-API stands as a testament to the transformative potential of technology in the financial sector, enabling developers to harness the power of data analytics and smart technology integration. For more information on how to get started with the Metals-API, visit the Metals-API Website and explore the Metals-API Documentation for detailed guidance on implementation.

By utilizing the Metals-API, developers can stay ahead of the curve, ensuring they have the tools necessary to navigate the complexities of the financial markets and make informed decisions based on real-time data. Whether you're tracking the HKD or analyzing metal prices, the Metals-API provides the resources needed to succeed in today's fast-paced financial environment.