You can check out the docs here:<p><a href="https://www.mapbox.com/api-documentation/" rel="nofollow">https://www.mapbox.com/api-documentation/</a><p>Gallery here:<p><a href="https://www.mapbox.com/gallery/" rel="nofollow">https://www.mapbox.com/gallery/</a><p>I'm not affiliated with Mapbox in any way btw. Just a fan of their products :)
I always thought that anyone competing with Google Maps API would likely remove the "private access" restriction, but this service keeps it behind a $500 paywall - I guess that's significantly better than Google's cost for the same thing ($10k IIRC)