Like most of Google’s API’s it’s REST based. I’m leaving this information here for historical purposes. But in this post, we’ll explore the Alpha Vantage API and see how can we use its free service to import the real time NSE data into R. How to access the API So let’s get started. I spent some time implementing the individual API endpoints I needed, but got carried away since I'm locked indoors because of the quarantine. Here is the new Google Stock API you can use: Real-Time Google Stock API

Quandl offers a simple API for stock market data downloads. Intrinio - Fintech Marketplace You can access it via WebSocket, or Web API. Actually, someone already made a wrapper for the API but I want to do one for myself.

Alpha measures the performance of a stock in relation to the overall market while beta is a measure of its volatility in relation to a benchmark. That’s why we’re shaking up the fintech industry with data that’s meticulously cleansed and standardized, available in multiple access methods for developers and non-developers, and fully covered with free support for all customers. Data powers innovation – but only when it’s accessible, flexible, and reliable. Dow +1.1%, S&P 500 +1.4%, Nasdaq +1.6%. Free your financial data. So I've been writing a small trading app, and I found TD Ameritrade's API support... lacking. Intrinio currently offers affordable Real-Time and REST API for US stock prices. Stocks wrapped up a negative week on a positive note, as a rally in the tech sector added to optimism from talk of re-opening parts of the U.S. economy.

Our daily data feeds deliver end-of-day prices, historical stock fundamental data, harmonized fundamentals, financial ratios, indexes, options and volatility, earnings estimates, analyst ratings, investor sentiment and more. It is basically a small part of a Python wrapper for the API (I guess). (I wish all API’s were, as I hate SOAP) Please note this API no longer appears to work. I present to you all, a feature-complete, documentation-included wrapper around the TD Ameritrade HTTP API.

Essentially, I am making JSON objects with any user defined ticker through the Alpha Vantage API.