How to Get Romanian Leu (RON) Historical Prices using this API

Introduction

In today's fast-paced financial landscape, obtaining accurate historical prices for currencies like the Romanian Leu (RON) is crucial for developers and analysts alike. The Metals-API offers a powerful solution for accessing real-time and historical data for various metals and currencies, including RON. This blog post will explore how to effectively utilize the Metals-API to retrieve historical prices for the Romanian Leu, while also delving into the innovative features and capabilities of the API that empower developers to create next-generation applications.

Understanding the Metals-API

The Metals-API is a comprehensive JSON API that provides access to real-time and historical prices for various metals and currencies. With its robust infrastructure, the API enables developers to integrate metal price data into their applications seamlessly. The API is designed to support a wide range of use cases, from financial analysis to market forecasting, making it an invaluable tool for anyone working with metals and currencies.

About Nickel (NI)

Nickel is a key metal in various industries, particularly in the production of stainless steel and batteries. The digital transformation in metal markets has led to significant advancements in how nickel and other metals are traded and analyzed. With the integration of smart technology and data analytics, developers can now access insights that were previously unavailable. The Metals-API plays a crucial role in this transformation by providing real-time data that can be leveraged for innovative applications.

API Capabilities

The Metals-API is equipped with a variety of endpoints that allow users to access different types of data. Each endpoint serves a specific purpose, enabling developers to tailor their applications to meet specific needs. Below, we will explore some of the key features and endpoints of the Metals-API, focusing on how they can be used to retrieve historical prices for the Romanian Leu.

Latest Rates Endpoint

The Latest Rates Endpoint provides real-time exchange rate data for various metals and currencies, including RON. Depending on your subscription plan, this endpoint can return data updated every 60 minutes, every 10 minutes, or even more frequently. This feature is essential for applications that require up-to-the-minute pricing information.

{
"success": true,
"timestamp": 1778458783,
"base": "RON",
"date": "2026-05-11",
"rates": {
"XAU": 0.000482,
"XAG": 0.03815,
"XPT": 0.000912,
"XPD": 0.000744
},
"unit": "per troy ounce"
}

Historical Rates Endpoint

The Historical Rates Endpoint is particularly useful for accessing historical exchange rates for the Romanian Leu. This endpoint allows users to query historical rates dating back to 2019 by appending a specific date in the format YYYY-MM-DD. This feature is invaluable for financial analysts who need to conduct trend analysis or backtesting.

{
"success": true,
"timestamp": 1778372383,
"base": "RON",
"date": "2026-05-10",
"rates": {
"XAU": 0.000485,
"XAG": 0.03825,
"XPT": 0.000915
},
"unit": "per troy ounce"
}

Bid And Ask Endpoint

The Bid and Ask Endpoint provides real-time bid and ask prices for metals, which can be crucial for traders looking to make informed decisions. This endpoint allows developers to retrieve current bid and ask prices based on their subscription plan, enabling them to implement features that require precise pricing data.

{
"success": true,
"timestamp": 1778458783,
"base": "RON",
"date": "2026-05-11",
"rates": {
"XAU": {
"bid": 0.000481,
"ask": 0.000483,
"spread": 2.0e-6
},
"XAG": {
"bid": 0.0381,
"ask": 0.0382,
"spread": 0.0001
}
},
"unit": "per troy ounce"
}

Convert Endpoint

The Convert Endpoint allows users to convert any amount from one currency to another, including conversions involving the Romanian Leu. This feature is particularly useful for applications that require currency conversion functionality, enabling users to easily switch between different currencies.

{
"success": true,
"query": {
"from": "RON",
"to": "XAU",
"amount": 1000
},
"info": {
"timestamp": 1778458783,
"rate": 0.000482
},
"result": 0.482,
"unit": "troy ounces"
}

Time-Series Endpoint

The Time-Series Endpoint allows users to query the API for daily historical rates between two dates of their choice. This feature is particularly useful for analyzing trends over time and can be used to generate reports or visualizations based on historical data.

{
"success": true,
"timeseries": true,
"start_date": "2026-05-04",
"end_date": "2026-05-11",
"base": "RON",
"rates": {
"2026-05-04": {
"XAU": 0.000485,
"XAG": 0.03825
},
"2026-05-06": {
"XAU": 0.000483,
"XAG": 0.0382
},
"2026-05-11": {
"XAU": 0.000482,
"XAG": 0.03815
}
},
"unit": "per troy ounce"
}

Fluctuation Endpoint

The Fluctuation Endpoint provides information about how currencies fluctuate on a day-to-day basis. This endpoint is useful for understanding market volatility and can help traders make informed decisions based on historical fluctuations.

{
"success": true,
"fluctuation": true,
"start_date": "2026-05-04",
"end_date": "2026-05-11",
"base": "RON",
"rates": {
"XAU": {
"start_rate": 0.000485,
"end_rate": 0.000482,
"change": -3.0e-6,
"change_pct": -0.62
}
},
"unit": "per troy ounce"
}

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

The OHLC Price Endpoint allows users to retrieve the open, high, low, and close prices for a specific time period. This data is essential for traders who rely on technical analysis to make informed trading decisions.

{
"success": true,
"timestamp": 1778458783,
"base": "RON",
"date": "2026-05-11",
"rates": {
"XAU": {
"open": 0.000485,
"high": 0.000487,
"low": 0.000481,
"close": 0.000482
}
},
"unit": "per troy ounce"
}

Historical LME Endpoint

The Historical LME Endpoint provides access to historical rates for LME symbols dating back to 2008. This endpoint is particularly useful for users interested in historical data related to metals traded on the London Metal Exchange.

{
"success": true,
"timestamp": 1778372383,
"base": "RON",
"date": "2026-05-10",
"rates": {
"XAU": 0.000485,
"XAG": 0.03825
},
"unit": "per troy ounce"
}

API Key and Authentication

To access the Metals-API, users must obtain an API key, which is a unique identifier passed into the API base URL's access_key parameter. This key is essential for authenticating requests and ensuring that users have the appropriate permissions to access the data.

API Response Structure

The API responses are structured in a way that provides clear and concise information. Each response includes a success status, a timestamp, the base currency, the date of the data, and the rates for the requested metals or currencies. Understanding this structure is crucial for developers to effectively parse and utilize the data in their applications.

Common Use Cases

There are numerous use cases for the Metals-API, particularly when it comes to retrieving historical prices for the Romanian Leu. Some common applications include:

• Financial analysis and reporting
• Market forecasting and trend analysis
• Currency conversion tools
• Trading applications that require real-time pricing data

Conclusion

In conclusion, the Metals-API provides a powerful and flexible solution for accessing historical prices for the Romanian Leu and other currencies. With its extensive range of endpoints and capabilities, developers can create innovative applications that leverage real-time and historical data. By understanding the various features of the API, including the Latest Rates, Historical Rates, and Time-Series endpoints, developers can effectively integrate this data into their projects.

For more information, be sure to check out the Metals-API Documentation, which provides detailed guidance on how to use the API effectively. Additionally, you can explore the Metals-API Supported Symbols to familiarize yourself with the available currencies and metals. To get started, visit the Metals-API Website for more resources and information.