Anyone know of an API for RSI and other indicators? I am looking for Relative Strenght Index and other market indicators API's for cryptos. I don't think TradingView provides one but maybe you know one?
I had the same problem, couldn’t seem to find a good API that supported most of the popular indicators, and at the same time covered all the exchanges. So I decided to start up a project for this. So check out https://taapi.io . We cover 200+ indicators, pattern recognitions etc… I’m a big fan of free products myself, so taapi.io is free as well.

If your indicator isn’t there, then shoot us message, and we’ll get it added!