How to Get Real-Time Advanced Copper Index (XCU_ACI) Prices with a Simple API Call Using Metals-API

Introduction

In today's fast-paced financial landscape, accessing real-time market data is crucial for making informed decisions. For developers and analysts interested in the copper market, the Copper Index (XCU_ACI) provides valuable insights into price fluctuations and trends. This blog post will guide you through how to get real-time advanced copper index prices using the Metals-API. We will explore the API's capabilities, key features, and provide step-by-step instructions on how to implement it effectively.

Metals-API Information

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 evolving. The integration of smart technologies and data analytics is reshaping how traders and investors interact with copper prices. With the rise of technological innovation, accessing real-time data has become essential for making strategic decisions.

The Metals-API offers a powerful solution for developers looking to integrate real-time copper pricing into their applications. By leveraging data analytics and insights, users can gain a competitive edge in the market. The API's capabilities empower developers to build next-generation applications that can analyze trends, forecast prices, and optimize trading strategies.

API Description

The Metals-API is a comprehensive JSON API that provides real-time and historical pricing data for various metals, including copper. It allows users to access a wide range of endpoints that cater to different needs, from retrieving the latest rates to historical data analysis. This API is designed to be user-friendly, making it easy for developers to implement and integrate into their systems.

With the Metals-API, developers can access real-time exchange rates, historical data dating back to 2019, and various other functionalities that enhance their applications. The API's transformative potential lies in its ability to provide accurate and timely data, enabling users to make informed decisions based on the latest market trends.

Key Features and Endpoints

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

• Latest Rates Endpoint: This endpoint provides real-time exchange rate data, updated every 60 minutes, every 10 minutes, or even more frequently, depending on your subscription plan. It allows users to access the most current prices for copper and other metals.
• Historical Rates Endpoint: Users can access historical rates for most currencies dating back to 2019. By appending a specific date to the API call, developers can retrieve past pricing data for analysis.
• Bid and Ask Endpoint: This powerful feature enables users to retrieve real-time bid and ask prices for copper, providing insights into market demand and supply.
• Convert Endpoint: The API includes a currency conversion feature that allows users to convert amounts from one metal to another or to/from USD, facilitating seamless transactions.
• Time-Series Endpoint: This endpoint allows users to query the API for daily historical rates between two chosen dates, enabling trend analysis over time.
• Fluctuation Endpoint: Users can track how copper prices fluctuate on a day-to-day basis, providing insights into market volatility.
• Carat Endpoint: This feature allows users to retrieve information about gold rates by carat, which can be useful for those dealing with precious metals.
• Lowest/Highest Price Endpoint: Users can query the API to get the lowest and highest prices for copper over a specified period, aiding in market analysis.
• Open/High/Low/Close (OHLC) Price Endpoint: This endpoint provides open, high, low, and close prices for copper, essential for technical analysis.
• Historical LME Endpoint: Users can access historical rates for LME symbols dating back to 2008, which is beneficial for long-term market analysis.
• API Key: Each user is assigned a unique API key that must be included in API requests to authenticate access.
• API Response: The API delivers exchange rates relative to USD, ensuring consistency in data representation.
• Available Endpoints: The Metals-API includes 14 different endpoints, each providing unique functionalities tailored to user needs.
• Supported Symbols Endpoint: This constantly updated endpoint returns all available currencies, ensuring users have access to the latest information.
• Intraday Endpoint: Users can query intraday exchange rate data for a single symbol, providing real-time insights into market movements.

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.

API Endpoint Examples and Responses

Latest Rates Endpoint

The Latest Rates Endpoint allows users to get real-time exchange rates for all available metals. Here is an example response:

{
"success": true,
"timestamp": 1788913001,
"base": "USD",
"date": "2026-09-09",
"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"
}

In this response, the rates object contains the current prices for various metals, including copper (XCU), which is priced at 0.294118 per troy ounce.

Historical Rates Endpoint

Accessing historical exchange rates is essential for analyzing market trends. Here is an example response from the Historical Rates Endpoint:

{
"success": true,
"timestamp": 1788826601,
"base": "USD",
"date": "2026-09-08",
"rates": {
"XAU": 0.000485,
"XAG": 0.03825,
"XPT": 0.000915,
"XPD": 0.000748
},
"unit": "per troy ounce"
}

This response shows historical prices for various metals, allowing users to analyze past performance and make informed predictions.

Time-series Endpoint

The Time-Series Endpoint enables users to get exchange rates for a specific time period. Here is an example response:

{
"success": true,
"timeseries": true,
"start_date": "2026-09-02",
"end_date": "2026-09-09",
"base": "USD",
"rates": {
"2026-09-02": {
"XAU": 0.000485,
"XAG": 0.03825,
"XPT": 0.000915
},
"2026-09-04": {
"XAU": 0.000483,
"XAG": 0.0382,
"XPT": 0.000913
},
"2026-09-09": {
"XAU": 0.000482,
"XAG": 0.03815,
"XPT": 0.000912
}
},
"unit": "per troy ounce"
}

This response provides daily rates for the specified time period, allowing users to visualize trends and fluctuations over time.

Convert Endpoint

The Convert Endpoint allows users to convert any amount from one metal to another or to/from USD. Here is an example response:

{
"success": true,
"query": {
"from": "USD",
"to": "XAU",
"amount": 1000
},
"info": {
"timestamp": 1788913001,
"rate": 0.000482
},
"result": 0.482,
"unit": "troy ounces"
}

This response indicates that 1000 USD is equivalent to 0.482 troy ounces of gold (XAU), providing a straightforward conversion for users.

Fluctuation Endpoint

The Fluctuation Endpoint tracks rate fluctuations between two dates. Here is an example response:

{
"success": true,
"fluctuation": true,
"start_date": "2026-09-02",
"end_date": "2026-09-09",
"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 prices have changed over the specified period, which is crucial for traders looking to capitalize on market movements.

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

The OHLC Price Endpoint provides open, high, low, and close prices for a specific time period. Here is an example response:

{
"success": true,
"timestamp": 1788913001,
"base": "USD",
"date": "2026-09-09",
"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 is essential for traders who rely on technical analysis to make informed decisions based on price movements throughout the trading day.

Bid/Ask Endpoint

The Bid/Ask Endpoint provides current bid and ask prices for metals. Here is an example response:

{
"success": true,
"timestamp": 1788913001,
"base": "USD",
"date": "2026-09-09",
"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 critical information for traders looking to execute buy or sell orders based on the current market conditions.

Conclusion

Accessing real-time advanced copper index prices using the Metals-API is a straightforward process that can significantly enhance your trading strategies. By leveraging the various endpoints offered by the API, developers can build applications that provide valuable insights into the copper market, enabling informed decision-making.

With features such as the Latest Rates Endpoint, Historical Rates Endpoint, and Bid/Ask Endpoint, the Metals-API empowers users to analyze trends, track fluctuations, and convert currencies seamlessly. As the metal markets continue to evolve, integrating real-time data into your applications will be crucial for staying competitive.

For further information, refer to the Metals-API Documentation and explore the Metals-API Supported Symbols page for a comprehensive list of available metal symbols. By utilizing these resources, you can maximize the potential of the Metals-API and enhance your trading capabilities.