here's a beta version of the API reference, feel free to make a pull request
https://github.com/saironiq/electrum-server/blob/master/README-API.md

also, i'm open to suggestions for new api methods if you need them.

you can test the API at electrum.unsha.net
ports: 50001 (tcp), 50002 (ssl), 8081 (http), 8082 (https)
and the brand new webocket interfaces: 8008 (websocket), 8009 (ssl websocket)

i wanna see some great new services built upon this api!

you can run your own electrum server (clone at https://github.com/saironiq/electrum-server), however, you need to apply this patch to yacoind first: https://github.com/saironiq/yacoin/commit/801d5756072bbe087cf009ad8490aff17aeb664f