Free Trading API?

Hello All, I was looking to start my MatLab studying with analysing stock prices.

It seems as if Bloomberg requires one to have a username/password, which I assume you need to pay for.

I was having trouble even using Reuters. Yahoo doesn't work anymore, and I am starting to assume I need a paid account for any financial API.

If I wanted to start learning, are there any free API's I can use?

As an example of an error messege,

con = blp();
getdata(con,'EURUSD Curncy','Last_Price')

Yields:

Error using blp
Verify that blpapi3.jar included on MATLAB javaclasspath.

[Lautaro Parada]

I higly recommend you to check https://www.alphavantage.co/ This is an API that provides free market data.