Hello, Slack Usage var HelloSlack = require('helloslack'); var slack = new HelloSlack({ token: 'xxxx-0000000000-0000000000-0000000000-000000', bot_token: 'ABCDEFGHIJKLMNOPQRSTUVWX'}); slack.on('team_join', function(data) { slack.bot.postMessage('@' + data.user.name, function() { return 'Hello, ' + data.user.name + '!'; });});