Dev Ops · n8n

Instantly Notify Your Slack Deployment Channel on Every GitLab Commit

Automatically sends a formatted Slack message to your deployment channel whenever a new commit is pushed to a GitLab repository. Keeps your team instantly informed without manually checking GitLab.

difficulty Beginnersetup 30 minresult Every GitLab push triggers a rich Slack notification in your chosen deployment channel with the committer name, branch, commit message, and a direct link to the commit.—
  1. 1

    Create a GitLab Webhook Trigger

    Add a GitLab Trigger node to your workflow. In the node settings, copy the generated webhook URL and paste it into your GitLab project under Settings > Webhooks. Enable the Push events option in GitLab. Set the Events field in the node to Push Hook so it fires on every commit push.

  2. 2

    Extract Key Commit Data with a Set Node

    Add a Set node after the trigger. Create four fields: committer mapped to {{ $json.commits[0].author.name }}, branch mapped to {{ $json.ref.replace('refs/heads/', '') }}, message mapped to {{ $json.commits[0].message }}, and commitUrl mapped to {{ $json.commits[0].url }}. This cleans up the data before sending it to Slack.

  3. 3

    Filter Out Non-Deployment Branches (Optional)

    Add an IF node to only forward commits from your main deployment branches. Set the condition to check if {{ $json.branch }} equals main or production. Connect the true output to the next step. Connect the false output to a No Operation node if you want to silently drop other branches.

  4. 4

    Send a Formatted Message to Slack

    Add a Slack node and connect your Slack credential. Set Resource to Message and Operation to Post. In the Channel field enter your deployment channel name such as #deployments. Set the Text field to *New commit on {{ $json.branch }}* by {{ $json.committer }} > {{ $json.message }} <{{ $json.commitUrl }}|View Commit>. This renders a clean, readable notification in Slack.

Frequently asked questions

How do I connect my Slack account to n8n?

In the Slack node, click the `Credential` dropdown and select `Create New`. You can authenticate via OAuth2 by following the prompts, or create a Slack App with a Bot Token and paste the token into n8n. Make sure the bot is invited to your deployment channel before testing.

What if I want notifications for all branches, not just main?

Simply delete or bypass the IF node in step 3 and connect the Set node directly to the Slack node. Every push to any branch in that GitLab project will then trigger a Slack notification.

Can I include multiple commits in one notification if several are pushed at once?

The current recipe uses `$json.commits[0]` which reads only the latest commit. To list all commits you would need a more advanced setup with a loop node, but for most teams showing the latest commit per push is sufficient and keeps messages concise.

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