Known API Commands for my reference.
Login - POST http://discordapp.com/api/auth/login
Send Message - POST http://discordapp.com/api/channels/CHANNELID/messages Get Messages - GET http://discordapp.com/api/channels/CHANNELID/messages
About Self - GET http://discordapp.com/api/users/@me Guild List - GET http://discordapp.com/api/users/@me/guilds PM Channels - GET http://discordapp.com/api/users/@me/channels
Above commands, you can remove @me with a specific user id to view that users information.
Channel List - GET http://discordapp.com/api/guilds/GUILDID/channels Guild Members - GET http://discordapp.com/api/guilds/GUILDID/members