Access Kolkata Gold 18k (KOLK-18k) Historical Prices with this API

In the ever-evolving landscape of precious metals trading, the ability to access historical prices for gold, particularly 18k gold, is crucial for traders, investors, and developers alike. The Metals-API provides a robust solution for obtaining real-time and historical data on various metals, including gold (symbol: XAU). This blog post delves into the transformative capabilities of the Metals-API, exploring how it empowers developers to build next-generation applications that leverage real-time metals data.

About Gold (XAU)

Gold has long been regarded as a safe haven asset, a store of value, and a hedge against inflation. With the digital transformation in precious metals trading, the integration of data analytics and technology has revolutionized how traders and investors interact with the market. The Metals-API stands at the forefront of this transformation, offering innovative solutions for price discovery and market insights.

As the demand for digital asset solutions grows, the Metals-API provides developers with the tools necessary to create applications that can analyze historical price trends, track fluctuations, and convert currencies seamlessly. By utilizing the API, developers can harness the power of data analytics to gain insights into market behavior, enabling informed decision-making.

API Description

The Metals-API Website offers a comprehensive suite of features designed to meet the needs of developers and traders. The API provides access to real-time and historical data for various metals, including gold, silver, platinum, and palladium. With a focus on innovation and technological advancement, the Metals-API empowers users to build applications that can adapt to the dynamic nature of the metals market.

One of the standout features of the Metals-API is its ability to deliver real-time exchange rate data, updated at intervals based on the user's subscription plan. This capability is essential for traders who require up-to-the-minute information to make informed decisions. Additionally, the API offers historical rates dating back to 2019, allowing users to analyze trends over time.

Key Features and Endpoints

The Metals-API boasts a variety of endpoints, each designed to provide specific functionalities that cater to the diverse needs of developers. Here are some of the key features:

Latest Rates Endpoint: This endpoint provides real-time exchange rate data for metals, updated every 60 minutes, every 10 minutes, or even more frequently, depending on the subscription plan. This feature is crucial for traders who need to stay informed about the latest market movements.
Historical Rates Endpoint: Users can access historical rates for most currencies dating back to 2019. By appending a specific date to the API request, developers can retrieve historical data for analysis and reporting.
Bid And Ask Endpoint: This powerful feature allows users to retrieve real-time bid and ask prices for metals, providing insights into market liquidity and pricing dynamics.
Convert Endpoint: The Metals-API includes a currency conversion endpoint, enabling users to convert any amount from one metal to another or to/from USD. This feature is particularly useful for traders dealing with multiple currencies.
Time-Series Endpoint: This endpoint allows users to query the API for daily historical rates between two dates of their choice, facilitating in-depth analysis of price movements over time.
Fluctuation Endpoint: Users can track how currencies fluctuate on a day-to-day basis, providing valuable insights into market volatility and trends.
Carat Endpoint: This feature allows users to retrieve information about gold rates by carat, catering to jewelers and traders dealing in various gold purities.
Lowest/Highest Price Endpoint: Users can query the API to get the lowest and highest prices for a specified date, aiding in market analysis and decision-making.
Open/High/Low/Close (OHLC) Price Endpoint: This endpoint provides users with the open, high, low, and close prices for a specific date, essential for technical analysis.
Historical LME Endpoint: Access historical rates for LME symbols dating back to 2008, allowing users to analyze long-term trends in the metals market.
API Key: The API Key is a unique identifier that must be included in the API request to authenticate and authorize access to the data.
API Response: The Metals-API delivers exchange rates relative to USD by default, with all data returned in a structured JSON format.
Available Endpoints: The API includes 14 endpoints, each providing different functionalities to cater to a wide range of user needs.
Supported Symbols Endpoint: This endpoint returns a constantly updated list of all available currencies, ensuring users have access to the latest information.
News Endpoint: Retrieve the latest news articles related to various metals, keeping users informed about market developments.

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 metal data into their applications.

API Endpoint Examples and Responses

Understanding how to interact with the Metals-API is crucial for effective implementation. Below are examples of various endpoints, showcasing the structure of API requests and responses.

Latest Rates Endpoint

Get real-time exchange rates for all available metals.

{
"success": true,
"timestamp": 1767313113,
"base": "USD",
"date": "2026-01-02",
"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": 1767226713,
"base": "USD",
"date": "2026-01-01",
"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": "2025-12-26",
"end_date": "2026-01-02",
"base": "USD",
"rates": {
"2025-12-26": {
"XAU": 0.000485,
"XAG": 0.03825,
"XPT": 0.000915
},
"2025-12-28": {
"XAU": 0.000483,
"XAG": 0.0382,
"XPT": 0.000913
},
"2026-01-02": {
"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": 1767313113,
"rate": 0.000482
},
"result": 0.482,
"unit": "troy ounces"
}

Fluctuation Endpoint

Track rate fluctuations between two dates.

{
"success": true,
"fluctuation": true,
"start_date": "2025-12-26",
"end_date": "2026-01-02",
"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": 1767313113,
"base": "USD",
"date": "2026-01-02",
"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": 1767313113,
"base": "USD",
"date": "2026-01-02",
"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 is an invaluable resource for developers and traders seeking to access historical prices and real-time data for precious metals like gold. With its comprehensive suite of features, including the ability to retrieve latest rates, historical data, and fluctuations, the API empowers users to make informed decisions in a rapidly changing market.

By leveraging the capabilities of the Metals-API, developers can create innovative applications that provide insights into market trends, enhance trading strategies, and facilitate seamless currency conversions. The API's focus on technological advancement and data analytics positions it as a leader in the field of metals trading.

For more information on how to get started with the Metals-API, check out the Metals-API Documentation and explore the extensive features available. Whether you're a seasoned trader or a developer looking to integrate metals data into your applications, the Metals-API offers the tools you need to succeed.

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Access Kolkata Gold 18k (KOLK-18k) Historical Prices with this API