Get your current avatar id.

gistfile1.coffee

bot.on 'roomChanged', (data) ->
  for user in data.users
    if user.userid == bot.userId
      console.log user.avatarid
      break


# Equivalent javascript code.
bot.on('roomChanged', function(data) {
  for (i = 0; i < data.users.length; i++) {
    var user = data.users[i];
    if (user.userid == bot.userId) {
      console.log(user.avatarid);
      break;
    }
  }
});