They are loosely inspired from "unspent" & "multiaddr" APIs from blockchain & dogechain, basically they are
http://chainz.cryptoid.info/ric/api.dws?q=unspent&active=address1|address2|...
http://chainz.cryptoid.info/ric/api.dws?q=multiaddr&active=address1|address2|...
Consider them "beta", subject to changes and for review/testing only.
I'll probably add some API key requirement later on, and probably tweak them for CDN-friendliness, so while you can use it for testing, don't release anything based on them just yet
Great work Fairglu! Let me take a look at the web wallet to see if it can be forked now. Thanks for all your contributions to riecoin.