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What is Marketstack?

The Marketstack API was built to offer a stock market data solution, making it accessible to both developers and companies around the world. At this time, the API supports 30,000+ stock tickers from 2,700+ global stock exchanges. Using the Marketstack REST API, you will be able to obtain end-of-day data, intraday data, as well as historical market data for the last 30 years.

The Marketstack API is part of the APILayer portfolio. It sits next to some of the most popular API services and Software-as-a-Service products worldwide, such as Currencylayer, Aviationstack, or IPstack. To learn more about APILayer, visit the official APILayer website.

Historical data refers to past information, spanning from one year on the free plan to over 30 years on premium plans. Intraday data provides data points within a single trading day, with intervals as frequent as every minute. Real-time data is the most up-to-date information, providing live market prices and updates as they occur
The Marketstack API is a simple REST API that returns data in a lightweight JSON format. This universal format allows for easy integration into any platform, application, or website that can make HTTP GET requests.

Marketstack sources its data from multiple licensed, high-authority market data providers worldwide. For U.S. exchanges, the data is specifically sourced and licensed from a reliable, enterprise-grade financial markets API.

For users on a Professional Plan or higher, the real-time market data is updated as frequently as every 60 seconds, ensuring that the information is accurate and timely
Yes, the Marketstack API is designed to be used for algorithmic and automated trading systems. The availability of real-time, intraday, and historical data, combined with a scalable infrastructure, makes it a suitable tool for backtesting and executing automated strategies.
Marketstack covers over 2,700+ stock exchanges, providing data for more than 30,000+ stock tickers. This includes major exchanges like the NASDAQ and NYSE, as well as a wide range of international markets.
You can retrieve intraday price data by using the dedicated intraday endpoint and specifying the desired stock symbol(s). The API allows you to set data frequency intervals for your request.

Since the Marketstack API is a standard RESTful service, it can be integrated with any programming language that can handle HTTP requests. The documentation provides code examples in various languages, including Python, PHP, and Node.js

API authentication is handled using a unique access key that must be appended to the API endpoint URL. All data transmitted to and from the API is secured with 256-bit HTTPS encryption, which is available on both free and paid plans

Yes, each Marketstack pricing plan comes with a specific monthly API request quota. If you exceed this limit, overage fees apply to ensure your application continues to run without disruption

Yes, the API provides access to 30+ years of historical data on premium plans. This extensive historical dataset can be downloaded in large volumes and is ideal for backtesting trading strategies.
Marketstack ensures data accuracy by sourcing its information from multiple high-authority and licensed market data providers. The service is built on a scalable cloud infrastructure with an uptime of nearly 100%.
Yes, Marketstack’s API can be integrated with data visualization tools. Services like FusionCharts can be used to seamlessly sync data from the API into platforms such as Excel, which can then be used with tools like Power BI or Tableau.
The Marketstack API is a REST API and does not offer WebSocket or streaming APIs. It provides real-time data through a standard request-response model that can be polled for continuous updates
Platinum Support includes dedicated account management, priority bug fixes, and access to exclusive support resources. It ensures you receive top-tier assistance for any issues you encounter, helping you maintain and optimize your system performance.

The cost of Platinum Support varies depending on your subscription plan:
– Standard Plan: $479.88 billed annually
– Professional Plan: $599.88 billed annually
– Professional Plus Plan: $719.88 billed annually
– Enterprise Plan: Custom pricing billed annually

When you select a pricing plan, the Platinum Support option is automatically checked. You will see a checkbox next to “Include Platinum Support” with the corresponding annual price. You can uncheck this box if you do not wish to include Platinum Support.
When you select Platinum Support, your invoice will display “Selected: [Your Plan] + Platinum Support.” The total amount charged will include the cost of your chosen plan and the annual fee for Platinum Support. For example, if you select the Professional Plan, your invoice will read “$59.99/month + $599.88/year for Platinum Support.”
Yes, existing customers can upgrade their plans to include Platinum Support. The option will be automatically checked when viewing available plans, showing the respective annual fee for Platinum Support. You can select or unselect this option as needed.
The billing period for Platinum Support is annual. When you purchase Platinum Support, the renewal date will be one year from the purchase date. Your invoice will show the purchase date, renewal date, and the total annual amount for Platinum Support.
Yes, Platinum Support is an optional service; you can uncheck the Platinum Support box during the purchase process if you prefer not to include it.
Yes, you can switch back to standard support at any time. However, the change will take effect at the start of your next billing cycle. Contact our support team to adjust your plan.
At Marketstack, we offer a Free Plan that allows users to make up to 1,000 market data API requests per month, supporting end-of-day data and up to 12 months of history. As soon as there is a requirement for more API requests or intraday data, users can choose from one of our premium subscription plans, available on our Pricing page, or contact us for a custom solution.
The most important factor to consider when choosing a subscription plan is the number of allowed monthly API requests. If you will stay below 100 monthly requests and only need end-of-day data, you can go for the Free Plan. If your volume exceeds 100 requests and/or you require more accurate, intraday data with regular updates, you will need to choose at least the Basic Plan. Other decisive factors include HTTPS encryption, technical support, and more.
Payments can be made via credit card (Visa, MasterCard, Discover, Diner’s Club, American Express). Enterprise and high-volume customers may request annual bank transfer payments to be enabled. You can change your payment method at any given time in the “Payment” section of your account dashboard.
Yes. If you choose annual billing, the total price of your subscription plan will be up to 15% lower than the total amount you would pay with a monthly payment frequency.
You can initiate a cancellation or downgrade by selecting a new plan and providing at least one reason for your decision. The customer service team will cancel or downgrade your plan. Downgrades are not effective immediately; your premium subscription will remain active until the end of the current billing period.

To change your subscription from monthly to yearly billing, submit a request on the Contact Us page on the website, following these steps:

Step 1: Sign in to your account
Step 2: Go to the Contact Us page
Step 3: Fill out the form and choose the “Sales” category for this request.
Step 4: In the text box, include your specific request, for example, “Change from Monthly to Yearly subscription.”

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