Polygon’s API to download prices both crypto and stock is hands down one of the best and easiest to use.

One of the saying is to invest in projects you actually use and so far polygon has been really great. However a side business they have is their API. And if that is a testament to how they run things, then its a very good sign. Its one of the easiest to use, instead of the bulky and sometimes convoluted API calls; polygon's is literally one liner that can be easily parse with a JSON parser. What I also like about is that they have an interface that not only is a tutorial but a live example; you just plug in what you want and the spit out a real api url that can be parsed. And the pay structure is simple as well, free for 2 years of historical data ( this is amazing on to itself) and about 50 bucks for more data. The customer support was great as well and friendly. Anyways, thought I share this because even though it does not use the polygon network directly its a good example of the what goes behind the company.