Best Market Data APIs: Zyla API Hub vs API Marketplace by AWS 2025

In the fast-paced world of finance, businesses and developers face numerous challenges when it comes to accessing accurate and real-time market data. The need for reliable currency conversion, interest rate information, and investment calculations is paramount for making informed decisions. This is where APIs come into play, providing essential data that can streamline operations and enhance user experiences. In this blog post, we will explore the best market data APIs available in the finance category, specifically comparing the offerings from Zyla API Hub and the API Marketplace by AWS. We will delve into the features, capabilities, and advantages of each platform, highlighting why Zyla API Hub may be the superior choice in 2025.

Understanding the Need for Finance APIs

Finance APIs are crucial for businesses that require real-time data to operate efficiently. Without these APIs, developers would face significant challenges, such as:

• Data Inaccuracy: Manually sourcing financial data can lead to errors and outdated information.
• Time Consumption: Building a custom solution for data retrieval is time-consuming and resource-intensive.
• Integration Complexity: Integrating multiple data sources can create a fragmented system that is difficult to manage.

By leveraging finance APIs, businesses can access accurate data quickly, allowing them to focus on their core operations rather than data management.

Overview of Zyla API Hub and AWS API Marketplace

Zyla API Hub offers a unified platform for accessing multiple APIs, simplifying the integration process for developers. With a single account, users can access a variety of finance APIs, including currency conversion, interest rates, and investment calculations. In contrast, the API Marketplace by AWS provides a broader range of APIs but lacks the streamlined integration experience that Zyla offers.

Top Finance APIs on Zyla API Hub

1. Forex API

The Forex API provides access to real-time exchange rates for over 190 currencies. This API is essential for applications that require accurate currency conversion and financial transactions.

Key Features and Capabilities

The Forex API includes several valuable features:

• Currencies Available: This endpoint allows users to retrieve a list of all supported currencies.
• Get Latest Rates: Users can obtain the latest USD-based exchange rates updated every 10 minutes.
• Get Latest Rate: This feature returns the exchange rate between two specified currencies, updated every 10 minutes.
• Currency Conversion: Users can convert an amount from one currency to another, with rates updated every 10 minutes.

Feature: Currencies Available

To use this endpoint, simply run the request to get a list of available currencies.

{
    "AED": "United Arab Emirates Dirham",
    "AFN": "Afghan Afghani",
    "ALL": "Albanian Lek",
    "AMD": "Armenian Dram",
    "ANG": "Netherlands Antillean Gulden"
}

This feature is valuable for developers as it provides a comprehensive list of currencies, ensuring that applications can support a wide range of transactions.

Feature: Get Latest Rates

To use this endpoint, run the request to receive the latest USD-based rates every 10 minutes.

{
    "bs": "USD",
    "ts": 1692112793,
    "rt": {
        "AED": 3.673029999509945,
        "AFN": 84.30969549999942,
        "ALL": 95.67440390970364,
        "AMD": 387.1775,
        "ANG": 1.7961954819490071
    }
}

This feature is crucial for applications that require up-to-date exchange rates for accurate financial transactions.

Feature: Get Latest Rate

To use this endpoint, specify two currencies to receive the exchange rate updated every 10 minutes.

{
    "ts": 1692113393,
    "rt": 1.092629
}

This feature allows developers to easily access the exchange rate between any two currencies, facilitating seamless currency conversion in applications.

Feature: Currency Conversion

To use this endpoint, indicate two currencies along with an amount to convert.

{
    "ts": 1692113393,
    "vl": 10.926292
}

This feature is essential for e-commerce platforms and financial applications that need to perform real-time currency conversions for users.

Ready to test the Forex API? Try the API playground to experiment with requests.

2. International Currency API

The International Currency API simplifies cross-border transactions by offering real-time and accurate exchange rate calculations.

Key Features and Capabilities

This API includes the following features:

• Get Conversion: Users can convert between two currencies along with an amount.

Feature: Get Conversion

To use this endpoint, specify two currencies and an amount to convert.

{
    "success": true,
    "code": 0,
    "timestamp": 1690300800,
    "q": {
        "from": "USD",
        "to": ["CHF"],
        "amount": 1
    },
    "result": {
        "CHF": 0.86442
    }
}

This feature is valuable for businesses that need to perform currency conversions in real-time, enhancing user experience in applications.

Want to use the International Currency API in production? Visit the developer docs for complete API reference.

3. The Current Interest Rates API

The Current Interest Rates API provides real-time interest rate information from central banks and benchmarks worldwide.

Key Features and Capabilities

This API includes the following features:

• Get Interest Rate: Users can obtain the current interest rate information.

Feature: Get Interest Rate

To use this endpoint, simply run the request to obtain the interest rate information.

{
    "central_bank_rates": [
        {
            "central_bank": "Australian Central Bank",
            "country": "Australia",
            "rate_pct": 4.35,
            "last_updated": "11-08-2023"
        },
        {
            "central_bank": "British Central Bank",
            "country": "United Kingdom",
            "rate_pct": 4.75,
            "last_updated": "11-07-2024"
        }
    ]
}

This feature is essential for financial professionals who need to stay updated on interest rates for market analysis and investment decisions.

Need help implementing The Current Interest Rates API? View the integration guide for step-by-step instructions.

4. Foreign Exchange API

The Foreign Exchange API allows developers to access foreign exchange data and services, integrating them into their applications.

Key Features and Capabilities

This API includes the following features:

• Get Conversion: Users can convert currencies and retrieve information based on a specific date.

Feature: Get Conversion

To use this endpoint, insert the currencies you want to convert and the amount.

{
    "success": true,
    "result": {
        "date": "2023-05-04T19:48:02.114Z",
        "from": {
            "currency": "EUR",
            "amount": 20
        },
        "to": {
            "currency": "USD",
            "amount": 22.148
        }
    }
}

This feature is valuable for e-commerce platforms that need to display prices in multiple currencies, enhancing user experience and increasing sales.

Want to try the Foreign Exchange API? Check out the API documentation to get started.

5. Forex Rates API

The Forex Rates API provides dependable and precise currency exchange rates for 172 global currencies.

Key Features and Capabilities

This API includes the following features:

• Supported Symbols: Retrieve all available symbols for queries.
• Latest Rates: Get real-time exchange rate data for multiple currencies.
• Historical Rates: Check rates for a specific symbol on a specific date.
• Time-Series: Retrieve daily historical rates between two dates.
• OHLC Price: Query to get the open, high, low, and close price.
• Conversion: Convert any amount from one currency to another.

Feature: Supported Symbols

Use this endpoint to retrieve all the available symbols supported for queries.

{
    "ADA": "Cardano",
    "AED": "United Arab Emirates Dirham",
    "AFN": "Afghan Afghani",
    "ALL": "Albanian Lek",
    "AMD": "Armenian Dram"
}

This feature is essential for developers to ensure their applications can support a wide range of currencies.

Feature: Latest Rates

The API's latest endpoint returns real-time exchange rate data for multiple currencies.

{
    "data": {
        "success": true,
        "timestamp": 1684510860,
        "date": "2023-05-19",
        "base": "USD",
        "rates": {
            "EUR": 0.92451432950985,
            "GBP": 0.8022813333333333,
            "INR": 82.87388513770813,
            "JPY": 137.5309583333333,
            "USD": 1
        }
    }
}

This feature is crucial for applications that require up-to-date exchange rates for accurate financial transactions.

Feature: Historical Rates

With this endpoint, you can check the rates for a specific symbol on a specific date.

{
    "data": {
        "success": true,
        "historical": true,
        "date": "2023-03-17",
        "base": "USD",
        "rates": {
            "EUR": 0.93162609745554,
            "GBP": 0.8210176666666666,
            "INR": 82.53591366666635,
            "JPY": 131.84033161231062,
            "USD": 1
        }
    }
}

This feature is valuable for financial institutions analyzing historical currency trends for reporting and forecasting.

Feature: Conversion

This endpoint can be used to convert any amount from one currency to another.

{
    "data": {
        "success": true,
        "query": {
            "from": "USD",
            "to": "EUR",
            "amount": "100"
        },
        "info": {
            "timestamp": 1720396740,
            "rate": 0.92353840811532
        },
        "historical": true,
        "date": "2024-07-07",
        "result": 92.353840811532
    }
}

This feature is essential for applications that need to perform real-time currency conversions for users.

Looking to optimize your Forex Rates API integration? Read our technical guides for implementation tips.

6. Currency Rate API

The Currency Rate API enables developers to retrieve real-time exchange rates between different currencies.

Key Features and Capabilities

This API includes the following features:

• Get Real Time Rate: Retrieve current exchange rates between two currencies.
• Get All Units: Retrieve all available currency units.
• Get Real Time Converter: Convert a specified amount between two currencies.

Feature: Get Real Time Rate

To use this endpoint, insert two units such as euro and dollar.

{
    "success": true,
    "from": "USD",
    "to": "EUR",
    "rates": [
        {
            "pairName": "USD/EUR",
            "price": 0.908,
            "dayChanged": 0.0027,
            "dayChangedByPercent": 0.29,
            "dayChangedStatus": "+",
            "lastUpdated": "2023-04-27T13:12:11.116Z"
        }
    ]
}

This feature is valuable for applications that need to display real-time currency conversion rates to users.

Feature: Get All Units

To use this endpoint, simply run the request to get all available units.

{
    "success": true,
    "symbols": [
        {
            "country": "United States",
            "isoCode": "USD",
            "name": "United States Dollar",
            "symbol": "$"
        },
        {
            "country": "Euro Member Countries",
            "isoCode": "EUR",
            "name": "Euro",
            "symbol": ""
        }
    ]
}

This feature is essential for developers to ensure their applications can support a wide range of currencies.

Feature: Get Real Time Converter

To use this endpoint, insert two units and an amount.

{
    "success": true,
    "from": "USD",
    "to": "EUR",
    "amount": 100,
    "converts": [
        {
            "pairName": "USD/EUR",
            "price": 0.9084,
            "dayChanged": 0.003,
            "dayChangedByPercent": 0.33,
            "dayChangedStatus": "+",
            "from": "USD",
            "to": "EUR",
            "lastUpdated": "2023-04-27T13:17:30.999Z",
            "amount": 100,
            "result": 90.84
        }
    ]
}

This feature is valuable for applications that need to perform real-time currency conversions for users.

Want to try the Currency Rate API? Check out the API documentation to get started.

7. Investment Calculations API

The Investment Calculations API offers a wide range of calculations related to investment performance and portfolio optimization.

Key Features and Capabilities

This API includes the following features:

• Get Calculate: Calculate various performance metrics.
• Get Calculates: Specify principal amount, rate of return, time period, and compounding frequency.

Feature: Get Calculate

To use this endpoint, indicate the principal amount, rate of return, time period, compounding frequency, and currency conversion details.

{
    "apy": "5.61%",
    "cg_tax": "€1.04",
    "compound_interest": "€203.11",
    "compounding_freq": "quarterly",
    "investment_returns": "€3820.73",
    "principal": "$4000",
    "principal_in": "USD",
    "rate": "5.50%",
    "results_in": "EUR",
    "roi": "€5.08",
    "simple_interest": "€198.97",
    "time_months": "12 M",
    "time_years": "1.00 Y"
}

This feature is valuable for investors who need to assess the performance of their investments over time.

Feature: Get Calculates

To use this endpoint, specify principal amount, rate of return, time period, and compounding frequency.

{
    "apy": "6.50%",
    "cg_tax": "$64.75",
    "compound_interest": "$4158.99",
    "compounding_freq": "yearly",
    "investment_returns": "$24158.99",
    "principal": "$20000",
    "principal_in": "USD",
    "rate": "6.50%",
    "results_in": "USD",
    "roi": "$20.79",
    "simple_interest": "$3900.00",
    "time_months": "36 M",
    "time_years": "3.00 Y"
}

This feature helps investors make informed decisions about whether to hold, buy, or sell their investments based on calculated metrics.

Want to try the Investment Calculations API? Check out the API documentation to get started.

8. Forex Converter API

The Forex Converter API provides real-time exchange rates for seamless currency conversions.

Key Features and Capabilities

This API includes the following features:

• All Currencies: Retrieve all available currencies.
• Currency Conversion: Convert between two currencies with an amount.

Feature: All Currencies

To use this endpoint, execute the request to get a list of all currencies.

[
    {"symbol": "USD", "name": "United States Dollar"},
    {"symbol": "EUR", "name": "Euro"},
    {"symbol": "GBP", "name": "British Pound"}
]

This feature is essential for developers to ensure their applications can support a wide range of currencies.

Feature: Currency Conversion

To use this endpoint, insert two currencies to convert with an amount.

{
    "success": true,
    "validationMessage": [],
    "result": {
        "from": "EUR",
        "to": "KWD",
        "amountToConvert": 10,
        "convertedAmount": 3.396614669764354
    }
}

This feature is valuable for applications that need to perform real-time currency conversions for users.

Want to use the Forex Converter API in production? Visit the developer docs for complete API reference.

Comparing Zyla API Hub and AWS API Marketplace

When comparing Zyla API Hub and the API Marketplace by AWS, several factors come into play:

• Unified Platform: Zyla API Hub offers a single account for multiple APIs, simplifying management and integration.
• Single SDK: Developers can use one SDK for multiple API integrations, reducing complexity.
• Consolidated Analytics: Zyla provides analytics and monitoring across all APIs, enhancing visibility and performance tracking.
• Reliability: Zyla's infrastructure ensures high uptime and reliability, critical for financial applications.
• Enhanced Developer Experience: Comprehensive documentation and consistent response formats improve the developer experience.

In contrast, the API Marketplace by AWS, while offering a broader range of APIs, lacks the streamlined integration experience and unified management that Zyla provides.

Conclusion

In conclusion, the finance APIs offered by Zyla API Hub provide a comprehensive solution for businesses looking to access real-time market data. With features that enhance currency conversion, interest rate tracking, and investment calculations, Zyla stands out as a superior choice in 2025. The unified platform, single SDK, and enhanced developer experience make Zyla API Hub the ideal partner for developers seeking reliable and efficient financial data solutions.