# Using Slack hooks

It is possible to use Slack to send notifications to your Slack channel whenever an apply is being done.

For this you'll need to:

• Create a Bot user in Slack
• Configure Atlantis to send notifications to Slack.

# Configuring Slack for Atlantis

• Go to https://api.slack.com/apps
• Click the Create New App button
• Select From scratch in the dialog that opens
• Give it a name, e.g. atlantis-bot.
• Select your Slack workspace
• Click Create App
• On the left go to oAuth & Permissions
• Copy the Bot User OAuth Token and provide it to Atlantis by using --slack-token=xoxb-xxxxxxxxxxx or via the environment ATLANTIS_SLACK_TOKEN=xoxb-xxxxxxxxxxx.
• Scroll down to scopes and add the following:
  • channels:read
  • chat:write
  • groups:read
  • incoming-webhook
  • mpim:read
• Install the app onto your Slack workspace
• Create a channel in your Slack workspace (e.g. my-channel), and add the app to it

# Configuring Atlantis

After following the above steps it is time to configure Atlantis. Assuming you have already provided the slack-token (via parameter or environment variable) you can now instruct Atlantis to send apply events to Slack.

In your Atlantis configuration you can now add the following:

webhooks:
- event: apply
  workspace-regex: .*
  kind: slack
  channel: my-channel

If you are deploying Atlantis as a Helm chart, this can be implemented via the config parameter available for chart customizations:

## Use Server Side Config,
## ref: https://www.runatlantis.io/docs/server-configuration.html
config: |
   ---
   webhooks:
     - event: apply
       workspace-regex: .*
       kind: slack
       channel: my-channel

The apply event information will be sent to the my-channel Slack channel.