# Market Data Licensing for Developers

> 4 articles on Data Licensing, part of Education. Tutorials, explainers and worked examples from Market Data for traders and developers.

Source: https://www.marketdata.app/topics/education/licensing/

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# Data Licensing

Market data licensing, explained for the people who build with it. What OPRA and the equity exchanges charge to display quotes, when a redistribution license is required and when it is not, how professional status changes the price of real-time data, and the bring-your-own-key model that lets a client-side application ship with no exchange fees at all. Written so a developer can choose the right data tier before writing the first line of code.

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(image: The letters API at the centre of a cyan network diagram, its spokes radiating to eight ringed nodes on dark navy.)

Bring Your Own Key (BYOK): How to Ship an App Without a Market Data Redistribution License

The BYOK model lets each user connect their own Market Data API key to your app, so you never need a market data redistribution license. How to build it right.

](/education/licensing/bring-your-own-key/)[

(image: Rows of five-decimal quotes such as 1.20506 and 1.18189 glowing green and blue on a dark screen.)

Stock Market Data Licensing: How To Display Stock Prices Legally

Learn how developers can legally display stock prices without paying thousands in fees. Guide to stock market data licensing and real-time alternatives.

](/education/stocks/stock-market-data-licensing/)[

(image: The black OPRA wordmark, its A drawn as a plain triangle, on a purple-to-teal field of wireframe grids.)

Building an Options App? OPRA Fees & Licensing Explained

Wondering how OPRA fees impact your options trading app? This guide breaks down what developers need to know.

](/education/options/opra-fees/)[

(image: A torn-edge split: a man in plaid at a laptop, a suited trader on an exchange floor, lettered PROFESSIONAL STATUS EXPLAINED.)

Professional Status Explained: What Every User Needs to Know

Exchanges decide whether you count as a professional, and it changes what your market data costs. Learn how the test works and how to check yours.

](/education/stocks/professional-status-explained/)