An application programming interface (API) establishes an online connection between a data provider and an end-user. For financial markets, APIs interface trading algorithms or models and an exchange's and/or broker's platform. An API is essential to implementing an automated trading strategy.
Stock market data APIs offer real-time or historical data on financial assets that are currently being traded in the markets. These APIs usually offer prices of public stocks, ETFs, ETNs.
An application programming interface, or API, is a set of programming code that queries data, parses responses, and sends instructions between one software platform and another. APIs are used extensively in providing data services across a range of fields and contexts.
