PR Merged Notifier

What It Does

Stay on top of what ships to production. When a pull request merges to main, this webhook uses AI to analyze the changed files, flag modifications to critical paths (routes, auth, migrations, infrastructure), and post a summary to your engineering Slack channel.

Your team knows what just shipped — before it hits production.

How It Works

1. GitHub fires a pull_request.closed event when a PR is merged to main
2. AI analyzes the file list — identifies which files are in critical paths (src/routes/, src/lib/, migrations/, config)
3. Impact assessment — generates a human-readable summary: what changed, who authored it, and why it matters
4. Slack notification — posts to #engineering with the PR title, author, critical file list, and direct link

Example Scenario

A developer merges a PR that modifies src/lib/auth.ts and adds a new migration file. Within seconds, #engineering gets: "Auth module updated + new migration by @sarah — PR #247: Add MFA support. Critical files: auth.ts, 0052_mfa_tokens.sql. Review deployment carefully."

Triggers

• pull_request.closed (where merged = true) — PR merged to default branch