Get Accurate Silver Sep 2025 (SIU25) Historical Prices using this API

In the world of precious metals, silver (symbol: XAG) holds a significant place not only as a valuable commodity but also as an essential component in various industrial applications. As we look towards the future, particularly for the September 2025 silver futures (SIU25), understanding historical prices becomes crucial for investors, manufacturers, and analysts alike. One of the most effective ways to access accurate historical prices for silver is through the Metals-API. This powerful tool provides real-time and historical data, enabling users to make informed decisions based on comprehensive market analysis.

About Silver (XAG)

Silver is not just a precious metal; it is a versatile resource with a wide range of industrial applications. From electronics to solar panels, silver's conductivity and reflective properties make it an invaluable material in modern technology. The integration of smart manufacturing technologies has further enhanced silver's role in the supply chain, allowing for more efficient production processes and innovative applications. As industries evolve, the demand for silver continues to grow, making it essential for stakeholders to stay updated on market trends and historical pricing.

In the digital age, market analysis has transformed significantly. The ability to analyze historical data allows businesses to forecast trends, manage risks, and optimize their operations. The Metals-API Documentation provides developers with the tools necessary to harness this data effectively, enabling them to build applications that can track and analyze silver prices over time.

API Description

The Metals-API is a robust platform designed to provide developers with real-time and historical data on various metals, including silver. Its innovative architecture allows for seamless integration into applications, empowering users to access crucial market information at their fingertips. The API's capabilities extend beyond simple data retrieval; it offers a transformative potential for businesses looking to leverage metals data in their operations.

With the Metals-API, developers can create applications that not only display current prices but also analyze historical trends, track fluctuations, and convert between different metal values. This level of functionality is essential for industries that rely on precise metal pricing for their operations, such as manufacturing, trading, and investment.

Key Features and Endpoints

The Metals-API boasts a variety of endpoints that cater to different needs. Here are some of the key features:

• Latest Rates Endpoint: This endpoint provides real-time exchange rate data for silver and other metals, updated every 60 minutes or more frequently depending on your subscription plan. This is crucial for traders and investors who need the most current pricing information.
• Historical Rates Endpoint: Users can access historical rates for silver dating back to 2019. By appending a specific date to the API request, developers can retrieve past pricing data, which is invaluable for trend analysis and forecasting.
• Bid And Ask Endpoint: This feature allows users to retrieve real-time bid and ask prices for silver, offering insights into market liquidity and pricing dynamics.
• Convert Endpoint: The API includes a currency conversion feature, enabling users to convert amounts between different metals or from/to USD. This is particularly useful for businesses that deal with multiple currencies.
• Time-Series Endpoint: This endpoint allows users to query daily historical rates between two specified dates, facilitating in-depth analysis of price movements over time.
• Fluctuation Endpoint: Users can track how silver prices fluctuate on a day-to-day basis, providing insights into market volatility and trends.
• Carat Endpoint: This feature provides information about gold rates by carat, which can be useful for jewelers and manufacturers.
• Lowest/Highest Price Endpoint: Users can query the API to find the lowest and highest prices for silver over a specified period, aiding in investment decisions.
• Open/High/Low/Close (OHLC) Price Endpoint: This endpoint provides detailed pricing information, including the open, high, low, and close prices for silver, which is essential for technical analysis.
• Historical LME Endpoint: Access historical rates for LME symbols dating back to 2008, allowing for comprehensive market analysis.
• API Key: Each user is assigned a unique API key, which is required for authentication when making requests to the API.
• API Response: The API delivers exchange rates relative to USD, ensuring consistency in data presentation.
• Available Endpoints: The Metals-API offers a total of 14 endpoints, each designed to fulfill specific data retrieval needs.
• Supported Symbols Endpoint: This endpoint provides a constantly updated list of all available metal symbols, 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 developers. Below are examples of various API endpoints and their responses:

Latest Rates Endpoint

Get real-time exchange rates for all available metals:

{
"success": true,
"timestamp": 1774052430,
"base": "USD",
"date": "2026-03-21",
"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 that the current price of silver (XAG) is 0.03815 per troy ounce, relative to USD.

Historical Rates Endpoint

Access historical exchange rates for any date since 1999:

{
"success": true,
"timestamp": 1773966030,
"base": "USD",
"date": "2026-03-20",
"rates": {
"XAU": 0.000485,
"XAG": 0.03825,
"XPT": 0.000915,
"XPD": 0.000748
},
"unit": "per troy ounce"
}

This response shows the historical price of silver on March 20, 2026, allowing users to analyze past market behavior.

Time-series Endpoint

Get exchange rates for a specific time period:

{
"success": true,
"timeseries": true,
"start_date": "2026-03-14",
"end_date": "2026-03-21",
"base": "USD",
"rates": {
"2026-03-14": {
"XAU": 0.000485,
"XAG": 0.03825,
"XPT": 0.000915
},
"2026-03-16": {
"XAU": 0.000483,
"XAG": 0.0382,
"XPT": 0.000913
},
"2026-03-21": {
"XAU": 0.000482,
"XAG": 0.03815,
"XPT": 0.000912
}
},
"unit": "per troy ounce"
}

This response provides a time series of silver prices between March 14 and March 21, 2026, enabling users to observe trends and fluctuations over that period.

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": 1774052430,
"rate": 0.000482
},
"result": 0.482,
"unit": "troy ounces"
}

This response indicates that 1000 USD is equivalent to 0.482 troy ounces of gold, showcasing the conversion capabilities of the API.

Fluctuation Endpoint

Track rate fluctuations between two dates:

{
"success": true,
"fluctuation": true,
"start_date": "2026-03-14",
"end_date": "2026-03-21",
"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"
}

This response provides insights into how silver prices fluctuated over the specified period, which is essential for traders looking to capitalize on market movements.

OHLC (Open/High/Low/Close) Endpoint

Get OHLC data for a specific time period:

{
"success": true,
"timestamp": 1774052430,
"base": "USD",
"date": "2026-03-21",
"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 detailed pricing information for silver, including the opening, highest, lowest, and closing prices for the specified date, which is crucial for technical analysis.

Bid/Ask Endpoint

Get current bid and ask prices for metals:

{
"success": true,
"timestamp": 1774052430,
"base": "USD",
"date": "2026-03-21",
"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"
}

This response provides the current bid and ask prices for silver, which is essential for traders looking to execute buy or sell orders effectively.

Conclusion

In conclusion, the Metals-API is an invaluable resource for anyone looking to access accurate historical prices for silver and other metals. With its comprehensive range of endpoints, developers can build applications that provide real-time data, historical analysis, and conversion capabilities. By leveraging the power of the Metals-API, businesses can enhance their operations, optimize their supply chains, and make informed decisions based on accurate market data.

For more information on how to get started with the Metals-API, visit the Metals-API Website and explore the extensive Metals-API Documentation. Whether you are a developer, trader, or manufacturer, the Metals-API provides the tools you need to stay ahead in the dynamic world of precious metals.