Slack Bolt app on Heroku

Slack ⚡️ Bolt

A framework to build Slack apps, fast.

• https://slack.dev/bolt
• https://github.com/SlackAPI/bolt

How to build

Create a Slack App

https://api.slack.com/apps

• Features > OAuth & Permissions:
  • Scopes:
    • "channels:history"
    • "chat:write:bot"
    • "bot"
  • Click "Save Changes"
• Features > Bot User:
  • Click "Add a Bot User"
  • Click "Add Bot User"
• Settings > Install App:
  • Complete "Install App"

Run the app on your local machine

export SLACK_SIGNING_SECRET=abcd1234567890123456789012345678
export SLACK_BOT_TOKEN=xoxb-123456789012-123456789012-abcd12345678901234567890
export DEBUG=1
npm run local

Deploy to Heroku

• Set env variables on Heroku
  • (Slack) Settings > Basic Information > App Credentials > Siginging Secret
  • (Slack) Settings > Install App > Bot User OAuth Access Token

Enable Slack Events Subscription

• Features > Event Subscriptions:
  • Enable Events:
    • Change from "Off" to "On"
  • Request URL:
    • Set "https://{your app name}.herokuapp.com/slack/events"
  • Subscribe to Workspace Events:
    • Add "message.channels"
  • Click "Save Changes"

Try the Slack App

• Invite your bot to a Slack channel
• Post "hello" in the channel
• You'll receive a response from the bot