Slack Connect GitHub

The GitHub integration for Slack brings code activity directly into developer channels. Pull requests, commits, issue updates, and CI build results post automatically in Slack. Development teams stay informed about code changes without watching GitHub dashboards all day.

What the GitHub Integration Does

GITHUB EVENTS → SLACK NOTIFICATIONS

  Pull request opened     →  Posts in #dev-team or repo channel
  PR review requested     →  DM to the requested reviewer
  PR merged               →  Posts confirmation in channel
  Issue opened/closed     →  Posts in subscribed channel
  Commit pushed           →  Posts commit summary
  Build failed (CI)       →  Alert in #alerts channel
  Release published       →  Posts in #announcements
  Comment on your PR      →  DM notification

How to Connect GitHub to Slack

1. Go to Apps → App Directory → search "GitHub".
2. Click "Add to Slack".
3. A GitHub bot appears in your DMs.
4. Type /github signin in the bot DM.
5. Authorize Slack to access your GitHub account.
6. You are connected personally — each team member repeats this step.

A workspace admin installs the app once. Each engineer then connects their own GitHub account using the /github signin command.

Subscribing a Channel to a Repository

Tell GitHub which channel to send notifications for a specific repository:

/github subscribe owner/repository

EXAMPLE:
/github subscribe acmecorp/mobile-app

→ #dev-team now receives all activity from
  the acmecorp/mobile-app repository

You can subscribe multiple repositories to one channel, or route different repos to different channels.

Filtering What Gets Notified

A busy repository would flood the channel if every event triggered a notification. Filter by event type:

/github subscribe acmecorp/mobile-app pulls reviews

→ Only pull requests and reviews notify the channel
→ Commits, issues, comments are silenced

AVAILABLE FILTERS:
  issues          → issue opened/closed/labeled
  pulls           → pull requests opened/merged/closed
  reviews         → PR review comments and approvals
  commits         → all pushes to default branch
  releases        → new releases published
  deployments     → deployment status changes
  comments        → all comments on issues and PRs

GitHub Link Unfurling

Paste any GitHub URL into a Slack message and Slack shows a preview card. For pull requests, it shows the PR title, status (open/merged/closed), number of commits, and reviewers. For issues, it shows the title, status, and labels.

GITHUB PR LINK PASTED IN SLACK

  https://github.com/acmecorp/mobile-app/pull/142

  ┌───────────────────────────────────────────────┐
  │ 🐙 Pull Request #142                          │
  │ "Fix: Login crash on Android 13"              │
  │ Status: Open  · 3 commits · 2 reviewers       │
  │ Requested: @alice @bob                        │
  │ [Open in GitHub]                              │
  └───────────────────────────────────────────────┘

Creating and Managing Issues from Slack

Create a GitHub Issue

/github open acmecorp/mobile-app
→ Opens a form inside Slack
→ Fill in title and description
→ Issue created in GitHub ✓

Close an Issue

/github close acmecorp/mobile-app #123
→ Closes issue #123 directly from Slack

Personal Notifications for Your Code

The GitHub bot sends you personal DMs when:

• Someone requests your review on a pull request.
• Someone comments on your PR or issue.
• Your PR gets approved or changes are requested.
• A PR you are mentioned in receives new activity.

Practical Team Setup

RECOMMENDED CHANNEL SETUP FOR DEV TEAMS

  # dev-team       → Subscribe to: pulls, reviews
  # dev-releases   → Subscribe to: releases
  # dev-alerts     → Subscribe to: deployments, failed builds
  # dev-issues     → Subscribe to: issues

Separating event types into dedicated channels prevents any single channel from becoming overwhelming while keeping the right people informed.

Useful GitHub Slash Commands

/github signin              → Connect your GitHub account
/github subscribe owner/repo → Subscribe channel to a repo
/github unsubscribe owner/repo → Remove a subscription
/github open owner/repo     → Create a new issue
/github remind me in 2 hours → Set a GitHub-specific reminder

Key Takeaways

• Install the GitHub app from Slack's App Directory; each engineer signs in with /github signin.
• Use /github subscribe owner/repo to route repository activity to a channel.
• Filter event types to avoid notification overload in busy repositories.
• GitHub link unfurling shows PR and issue details without clicking to open GitHub.
• Separate repo events across dedicated channels for pulls, releases, alerts, and issues.