Retrieve Sierra Leonean Leone (SLL) Historical Prices through this API

The Sierra Leonean Leone (SLL) is an essential currency in West Africa, and understanding its historical prices is crucial for various applications, from financial analysis to market forecasting. With the advent of digital transformation in metal markets, the need for accurate and real-time data has never been more pressing. The Metals-API provides a powerful solution for developers looking to retrieve historical prices and other vital data related to metals and currencies, including the SLL. This blog post will explore the capabilities of the Metals-API, focusing on how to access historical prices and the innovative features that make it a valuable tool for developers.

About Sierra Leonean Leone (SLL)

The Sierra Leonean Leone has undergone significant changes since its introduction, reflecting the economic conditions of the country. As a fiat currency, its value is influenced by various factors, including inflation rates, government policies, and global market trends. In the context of metals, the SLL's value can be compared against precious metals like gold (XAU), silver (XAG), platinum (XPT), and palladium (XPD). Understanding these relationships is vital for traders and analysts who seek to make informed decisions based on historical data.

Digital transformation in the metal markets has led to the integration of smart technologies and data analytics, allowing for more precise tracking of currency values and market trends. The Metals-API stands at the forefront of this transformation, providing developers with the tools they need to harness real-time data for their applications. By leveraging the API, developers can gain insights into historical price trends, fluctuations, and market dynamics, enabling them to create innovative solutions that meet the demands of today's fast-paced financial landscape.

API Description

The Metals-API is a comprehensive solution designed to provide real-time and historical data on metal prices and currency exchange rates. It empowers developers to build next-generation applications that require accurate and timely information. The API offers a range of endpoints that cater to various needs, including retrieving the latest rates, historical prices, and conversion functionalities.

One of the standout features of the Metals-API is its ability to deliver real-time exchange rate data, updated frequently based on the user's subscription plan. This capability allows developers to integrate live data into their applications, ensuring that users have access to the most current information available. Additionally, the API supports a wide array of currencies and metals, making it a versatile tool for financial analysis.

For detailed information on how to implement the API, developers can refer to the Metals-API Documentation, which provides comprehensive guidance on using the various endpoints and features effectively.

Key Features and Endpoints

The Metals-API offers a variety of endpoints, each designed to fulfill specific requirements. Here are some of the key features:

Latest Rates Endpoint: This endpoint provides real-time exchange rate data for metals and currencies. Depending on the subscription plan, the data can be updated every 60 minutes or even more frequently. This feature is particularly useful for applications that require up-to-the-minute information.
Historical Rates Endpoint: Developers can access historical rates for most currencies dating back to 2019. By appending a specific date to the API request, users can retrieve historical data that is essential for trend analysis and forecasting.
Bid and Ask Endpoint: This powerful feature allows users to retrieve real-time bid and ask prices for metals, providing insights into market conditions and helping traders make informed decisions.
Convert Endpoint: The conversion endpoint enables users to convert amounts from one currency to another, facilitating transactions and financial calculations across different currencies.
Time-Series Endpoint: This endpoint allows users to query daily historical rates between two specified dates, making it easier to analyze trends 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, which is particularly useful for jewelers and traders in the precious metals market.
Lowest/Highest Price Endpoint: Users can query the API to get the lowest and highest prices for a specified date, which is essential for understanding market extremes.
Open/High/Low/Close (OHLC) Price Endpoint: This endpoint provides open, high, low, and close prices for a specific date, allowing for detailed market analysis.
Historical LME Endpoint: This endpoint provides access to historical rates for LME symbols dating back to 2008, which is crucial for those analyzing 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 and authorize access to the data.
API Response: The API delivers exchange rates relative to USD by default, ensuring consistency in data presentation.
Available Endpoints: The Metals-API includes 14 different endpoints, each providing unique functionalities to cater to diverse user needs.
Supported Symbols Endpoint: This endpoint returns a constantly updated list of 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.

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 effective integration. Below are examples of various endpoint responses:

Latest Rates Endpoint

{
"success": true,
"timestamp": 1771201191,
"base": "USD",
"date": "2026-02-16",
"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"
}

This response indicates a successful request, providing the latest exchange rates for various metals against USD. The "rates" object contains the current values for each metal symbol, allowing developers to display this information in their applications.

Historical Rates Endpoint

{
"success": true,
"timestamp": 1771114791,
"base": "USD",
"date": "2026-02-15",
"rates": {
"XAU": 0.000485,
"XAG": 0.03825,
"XPT": 0.000915,
"XPD": 0.000748
},
"unit": "per troy ounce"
}

This example shows how to retrieve historical rates for a specific date. The response includes the base currency (USD) and the rates for various metals, which can be used for analysis or reporting purposes.

Time-series Endpoint

{
"success": true,
"timeseries": true,
"start_date": "2026-02-09",
"end_date": "2026-02-16",
"base": "USD",
"rates": {
"2026-02-09": {
"XAU": 0.000485,
"XAG": 0.03825,
"XPT": 0.000915
},
"2026-02-11": {
"XAU": 0.000483,
"XAG": 0.0382,
"XPT": 0.000913
},
"2026-02-16": {
"XAU": 0.000482,
"XAG": 0.03815,
"XPT": 0.000912
}
},
"unit": "per troy ounce"
}

The time-series response provides historical rates for a specified date range, allowing developers to analyze trends over time. Each date in the "rates" object corresponds to the metal prices on that day, facilitating comprehensive market analysis.

Convert Endpoint

{
"success": true,
"query": {
"from": "USD",
"to": "XAU",
"amount": 1000
},
"info": {
"timestamp": 1771201191,
"rate": 0.000482
},
"result": 0.482,
"unit": "troy ounces"
}

This response illustrates how to convert an amount from one currency to another. In this case, 1000 USD is converted to gold (XAU), providing the result in troy ounces. This feature is particularly useful for traders and investors looking to make quick conversions based on current rates.

Fluctuation Endpoint

{
"success": true,
"fluctuation": true,
"start_date": "2026-02-09",
"end_date": "2026-02-16",
"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"
}

The fluctuation endpoint response provides insights into how metal prices have changed over a specified period. The "change" and "change_pct" fields indicate the absolute and percentage changes, respectively, which are critical for understanding market dynamics.

OHLC (Open/High/Low/Close) Price Endpoint

{
"success": true,
"timestamp": 1771201191,
"base": "USD",
"date": "2026-02-16",
"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"
}

This response provides the open, high, low, and close prices for a specific date, which are essential for traders looking to analyze market performance and make informed decisions.

Bid/Ask Endpoint

{
"success": true,
"timestamp": 1771201191,
"base": "USD",
"date": "2026-02-16",
"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"
}

The bid/ask response provides current bid and ask prices for metals, along with the spread. This information is crucial for traders who need to understand market liquidity and make timely decisions.

Conclusion

The Metals-API is an invaluable resource for developers seeking to access historical prices and real-time data for the Sierra Leonean Leone and various metals. Its innovative features, such as the ability to retrieve historical rates, track fluctuations, and convert currencies, empower developers to build sophisticated applications that meet the demands of the modern financial landscape.

By leveraging the capabilities of the Metals-API, developers can gain insights into market trends, make informed decisions, and create applications that enhance user experiences. For more information on how to get started with the API, refer to the Metals-API Documentation and explore the Metals-API Supported Symbols to find the data you need.

In a world where data drives decision-making, the Metals-API stands out as a transformative tool that enables developers to harness the power of real-time metals data, paving the way for innovative applications and solutions in the financial sector.

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Retrieve Sierra Leonean Leone (SLL) Historical Prices through this API