Integrate Kolkata Gold 18k (KOLK-18k) Historical Prices via this API

Gold, represented by the symbol XAU, has long been a cornerstone of financial markets and a symbol of wealth and stability. With the rise of digital transformation in precious metals trading, developers now have unprecedented access to real-time and historical data through APIs like Metals-API. This blog post explores the innovative capabilities of the Metals-API, focusing on how to retrieve historical prices for Kolkata Gold 18k (KOLK-18k) and other gold-related data, empowering developers to create next-generation applications.

About Gold (XAU)

Gold has been a valuable asset for centuries, serving not only as a medium of exchange but also as a hedge against inflation and currency fluctuations. In recent years, the digital transformation of precious metals has revolutionized how traders and investors interact with gold. The integration of data analytics and market insights allows for more informed decision-making, while technology integration in trading platforms enhances the user experience. The innovation in price discovery mechanisms has made it easier for investors to track gold prices in real-time, and digital asset solutions have emerged to facilitate seamless transactions.

API Description

The Metals-API is a powerful tool that provides developers with access to real-time and historical metals data, including gold prices. This API empowers developers to build applications that can analyze market trends, track price fluctuations, and convert currencies with ease. With its user-friendly interface and comprehensive documentation, the Metals-API enables developers to harness the transformative potential of real-time metals data.

For more information, visit the Metals-API Website or check out the Metals-API Documentation for detailed guidance on implementation.

Key Features and Endpoints

The Metals-API offers a variety of endpoints that cater to different needs, allowing developers to access a wealth of information about gold and other metals. Here are some of the key features:

Latest Rates Endpoint: This endpoint provides real-time exchange rate data for gold and other metals, updated every 60 minutes, 10 minutes, or even more frequently, depending on your subscription plan. This feature is essential for traders who need to stay updated on market conditions.
Historical Rates Endpoint: Developers can access historical rates for gold dating back to 2019. By appending a specific date to the API request, users can retrieve past prices, enabling them to analyze trends over time.
Bid And Ask Endpoint: This feature allows users to retrieve real-time bid and ask prices for gold, providing insights into market liquidity and pricing dynamics.
Convert Endpoint: The Metals-API includes a currency conversion endpoint, allowing users to convert amounts from one currency to another, which is particularly useful for international transactions.
Time-Series Endpoint: This endpoint enables users to query daily historical rates between two specified dates, making it easier to analyze price movements over specific periods.
Fluctuation Endpoint: Users can track how gold prices fluctuate on a day-to-day basis, providing valuable insights into market volatility.
Carat Endpoint: This feature allows users to retrieve information about gold rates by carat, which is essential for jewelers and consumers interested in specific gold purities.
Lowest/Highest Price Endpoint: Developers can query the API to get the lowest and highest prices for gold over a specified period, which is crucial for understanding market extremes.
Open/High/Low/Close (OHLC) Price Endpoint: This endpoint provides open, high, low, and close prices for gold, allowing traders to analyze market performance comprehensively.
Historical LME Endpoint: Access historical rates for LME symbols dating back to 2008, which is beneficial for users interested in broader market trends.
API Key: Each user is assigned a unique API key that must be included in requests to authenticate access to the API.
API Response: The API delivers exchange rates relative to USD by default, ensuring consistency in data interpretation.
Available Endpoints: The Metals-API features 14 different endpoints, each designed to provide specific functionalities, making it a versatile tool for developers.
Supported Symbols Endpoint: This endpoint returns a constantly updated list of all available currencies and metals, ensuring users have access to the latest information.
Intraday Endpoint: Query intraday exchange rate data for a single symbol, which is particularly useful for day traders.

List of Symbols

The Metals-API provides access to a comprehensive range of metal symbols, including various gold types. For a complete list of all supported symbols and their specifications, refer to the Metals-API Supported Symbols page.

API Endpoint Examples and Responses

Latest Rates Endpoint

Get real-time exchange rates for all available metals:

{
"success": true,
"timestamp": 1788394322,
"base": "USD",
"date": "2026-09-03",
"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": 1788307922,
"base": "USD",
"date": "2026-09-02",
"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": "2026-08-27",
"end_date": "2026-09-03",
"base": "USD",
"rates": {
"2026-08-27": {
"XAU": 0.000485,
"XAG": 0.03825,
"XPT": 0.000915
},
"2026-08-29": {
"XAU": 0.000483,
"XAG": 0.0382,
"XPT": 0.000913
},
"2026-09-03": {
"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": 1788394322,
"rate": 0.000482
},
"result": 0.482,
"unit": "troy ounces"
}

Fluctuation Endpoint

Track rate fluctuations between two dates:

{
"success": true,
"fluctuation": true,
"start_date": "2026-08-27",
"end_date": "2026-09-03",
"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": 1788394322,
"base": "USD",
"date": "2026-09-03",
"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": 1788394322,
"base": "USD",
"date": "2026-09-03",
"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 comprehensive suite of tools for developers looking to integrate gold pricing data into their applications. With endpoints that provide real-time rates, historical data, and detailed market insights, developers can create robust applications that meet the needs of traders and investors alike. By leveraging the capabilities of the Metals-API, developers can enhance their applications with accurate and timely data, ultimately leading to better decision-making in the precious metals market.

For further exploration of the API's capabilities, refer to the Metals-API Documentation and stay updated with the latest features and enhancements. The integration of such powerful tools can significantly impact how developers approach financial data and trading strategies.

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Integrate Kolkata Gold 18k (KOLK-18k) Historical Prices via this API