Download Advanced Copper Index (XCU_ACI) Historical Prices using this API

In the ever-evolving landscape of metal markets, the ability to access and analyze historical prices is crucial for developers and analysts alike. The Metals-API offers a powerful solution for retrieving historical prices of metals, including the Advanced Copper Index (XCU_ACI). This blog post will delve into the capabilities of the Metals-API, focusing on how to effectively download and utilize historical price data for copper and other metals.

About Copper (XCU)

Copper, represented by the symbol XCU, is a vital metal in various industries, including construction, electronics, and renewable energy. As the world embraces digital transformation, the metal markets are also undergoing significant changes. The integration of smart technologies and data analytics is revolutionizing how we understand and interact with metal prices. With the rise of technological innovations, developers can leverage real-time data to create applications that provide insights into market trends and price fluctuations.

As we explore the potential of the Metals-API, we will consider how it empowers developers to build next-generation applications that harness the power of data analytics and smart technology integration. The API provides a comprehensive suite of endpoints that allow users to access real-time and historical data, enabling informed decision-making in the fast-paced world of metal trading.

API Description

The Metals-API is designed to provide developers with access to real-time and historical metal prices, including copper. With its innovative architecture, the API allows for seamless integration into various applications, making it an essential tool for anyone working with metal data. The API's capabilities extend beyond simple price retrieval; it offers advanced features that enable users to analyze trends, perform conversions, and track fluctuations over time.

For detailed information on how to get started, refer to the Metals-API Documentation, which provides comprehensive guidance on utilizing the API effectively.

Key Features and Endpoints

The Metals-API offers 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 metals, updated based on your subscription plan. Depending on your plan, you can receive updates every 60 minutes or even every 10 minutes, ensuring you have the most current information at your fingertips.
Historical Rates Endpoint: Access historical rates for most metals dating back to 2019. By appending a specific date (YYYY-MM-DD) to your query, you can retrieve past prices and analyze trends over time.
Bid And Ask Endpoint: This powerful feature allows you to retrieve real-time bid and ask prices for metals, providing insight into market dynamics and helping you make informed trading decisions.
Convert Endpoint: The API includes a currency conversion endpoint, enabling you to convert amounts from one metal to another or to/from USD. This is particularly useful for traders who need to assess value across different currencies.
Time-Series Endpoint: Query the API for daily historical rates between two dates of your choice. This endpoint is invaluable for analyzing price movements over specific periods.
Fluctuation Endpoint: Track how metal prices fluctuate on a day-to-day basis. This endpoint provides insights into market volatility and can help traders identify patterns.
Carat Endpoint: Retrieve information about gold rates by carat, allowing for precise calculations in jewelry and investment contexts.
Lowest/Highest Price Endpoint: Query the API to get the lowest and highest prices for a specific date, which can aid in understanding market extremes.
Open/High/Low/Close (OHLC) Price Endpoint: This endpoint provides 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 for extensive market analysis.
API Key: Your unique API key is required to access the API, ensuring secure and authorized usage.
API Response: The API delivers exchange rates relative to USD by default, with all data returned in a structured JSON format.
Available Endpoints: The Metals-API features 14 different endpoints, each providing unique functionalities to cater to various user needs.
Supported Symbols Endpoint: This constantly updated endpoint returns all available metal symbols, ensuring you have the latest information at your disposal.

List of Symbols

The 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 understand the full scope of available data.

API Endpoint Examples and Responses

To illustrate the capabilities of the Metals-API, let's explore some example responses from various endpoints.

Latest Rates Endpoint

Get real-time exchange rates for all available metals.

{
"success": true,
"timestamp": 1783815356,
"base": "USD",
"date": "2026-07-12",
"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": 1783728956,
"base": "USD",
"date": "2026-07-11",
"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": "2026-07-05",
"end_date": "2026-07-12",
"base": "USD",
"rates": {
"2026-07-05": {
"XAU": 0.000485,
"XAG": 0.03825,
"XPT": 0.000915
},
"2026-07-07": {
"XAU": 0.000483,
"XAG": 0.0382,
"XPT": 0.000913
},
"2026-07-12": {
"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": 1783815356,
"rate": 0.000482
},
"result": 0.482,
"unit": "troy ounces"
}

Fluctuation Endpoint

Track rate fluctuations between two dates.

{
"success": true,
"fluctuation": true,
"start_date": "2026-07-05",
"end_date": "2026-07-12",
"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": 1783815356,
"base": "USD",
"date": "2026-07-12",
"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": 1783815356,
"base": "USD",
"date": "2026-07-12",
"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

The Metals-API provides a robust platform for accessing historical prices and real-time data for metals, including copper. By leveraging the various endpoints offered by the API, developers can create powerful applications that analyze market trends, track fluctuations, and perform conversions with ease. The ability to access comprehensive data through a single API simplifies the process of integrating metal price information into applications, making it an invaluable resource for developers in the financial sector.

For more information on how to utilize the Metals-API effectively, be sure to check out the Metals-API Documentation and explore the Metals-API Supported Symbols to understand the full range of available data. With the right tools and insights, you can harness the power of metal market data to drive innovation and success in your projects.

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Download Advanced Copper Index (XCU_ACI) Historical Prices using this API