Thank you for this feedback as well! Our data definitely accounts for splits and dividends! Dividend history data, as well as ETF's like you mentioned are two things definitely on our list to add immediately.
Since there are quality differences between data providers, it would be good to know where you source the data from. Is it from Yahoo Finance (just for example)? Or is it really directly from Nasdaq (which I presume would be pretty costly, and thus raises the question on how long you'll be able to run this service for free before shutting down or having to raise prices).
This is important since if someone decides to fully build on top of your API, they don't want the service to be gone in a few months and waste all the time integrating with yours.
That is precisely my question too. Who or what provides the source-data?
Ideally market-data should be freely available to everyone. I understand it is an expense to provide such data. But it could be mandated by law that anybody operating a stock exchange should provide that data for free, to guarantee efficient markets.
Absolutely nothing, and we encourage you to do so! Build your own products with our data and monetize it how you see fit, no credit to Styvio required. We are developers first so do with our data what you want. We plan on making revenue by offering premium services to non-developers who simply want to use our charting and sentiment features. The API is a nice gesture to users.
That's highly unlikely. Data brokers that lend out data to you from exchanges make sure end users are just retail and make you sign a bunch of forms just to access basic lit pool data.
Thank you so much and yes we do! If you check out the API: https://www.styvio.com/api/aapl and scroll down a bit, there is price arrays for daily, weekly, monthly, yearly, and all time values. We are definitely planning on adding bid/ask in the future as well!
Yes I completely apologize, international stocks is definitely something we are lacking. As of now it is entirely NYSE and NASDAQ data. Also, if you want to test out the JSON API without logging in, test it out here: https://www.styvio.com/api/aapl
How to use it, what it is in full detail is documented well and free. You sign up for the API key, not to view docs. i.e its not a sales funnel for people who arent interested
Also pretty sure you need to account for when you distribute the data, do you have the full rights to redistribute this data legally?
How do you prevent abuse and limit the call rate if you don't require an API key? Even with IP-based limits, I could programmatically pipe my calls through Tor.
