The original hubot-slack is no longer under active development. Slack recommends taking a look at Bolt for JS with Socket Mode first if you're getting started.

But I'm going to maintain this fork as I continue to evolve Hubot. So feel free to use this one.

npm i @hubot-friends/hubot-slack hubot

This is a Hubot adapter to use with Slack.

Comprehensive documentation is available.

• Create (or use an existing one) a Slack Workspace
• Create a Slack App
• Create an App-Level Token and give it connections:write scope. This will be the HUBOT_SLACK_APP_TOKEN environment variable. The adapter will use this token to authenticate via Slacks Socket Mode (WebSockets)
• Create a Bot Token. This will be the HUBOT_SLACK_BOT_TOKEN environment variable. The adapter will use this token to POST messages to Slack's HTTP API.
• Make sure to give the Slack App the scope permissions noted below in "Notes on using SocketMode".

An example command to start the app on MacOS is the following. Assuming there is a file called .env with the following environment variables set:

HUBOT_SLACK_APP_TOKEN=xapp-1-...
HUBOT_SLACK_BOT_TOKEN=xoxb-...

Set the environment variables to the values you created for your Slack Apps App-Level Token (HUBOT_SLACK_APP_TOKEN) and Bot Token (HUBOT_SLACK_BOT_TOKEN).

env $(cat .env | grep -v \"#\" | xargs -0) PORT=8080 hubot -a @hubot-friends/hubot-slack -n mybot

Another way to start the app in MacOS or Linux is:

HUBOT_SLACK_APP_TOKEN=xapp-1... HUBOT_SLACK_BOT_TOKEN=xoxb-... PORT=8080 hubot -a @hubot-friends/hubot-slack -n mybot

Need the following permissions:

• app_mentions:read
• channels:join
• channels:history
• channels:read
• chat:write
• im:write
• im:history
• im:read
• users:read
• groups:history
• groups:write
• groups:read
• mpim:history
• mpim:write
• mpim:read

Need to following events:

• app_mention
• message.channels
• message.im
• message.groups
• message.mpim

The following YAML manifest will work.

display_information:
  name: NameOfYourBot
  description: Description of your bot.
  background_color: "#3d001d"
features:
  app_home:
    home_tab_enabled: false
    messages_tab_enabled: true
    messages_tab_read_only_enabled: false
  bot_user:
    display_name: NameOfYourbot
    always_online: true
oauth_config:
  scopes:
    bot:
      - app_mentions:read
      - channels:join
      - channels:history
      - channels:read
      - chat:write
      - im:write
      - im:history
      - im:read
      - users:read
      - groups:history
      - groups:write
      - groups:read
      - mpim:history
      - mpim:write
      - mpim:read
settings:
  event_subscriptions:
    bot_events:
      - app_mention
      - message.channels
      - message.im
      - message.groups
      - message.mpim
  interactivity:
    is_enabled: true
  org_deploy_enabled: false
  socket_mode_enabled: true
  token_rotation_enabled: false