n8n Self-Healing Web App Outage Fix with Claude, GitHub & Slack

Automatically fix web app outages using Claude + GitHub, then notify your team in Slack

This n8n workflow runs every 2 minutes to health-check a web app. When your site goes unhealthy, it gathers recent GitHub context and relevant source files, asks Anthropic Claude to propose a fix, then opens a GitHub Pull Request and sends the outcome to Slack via an incoming webhook.

What this workflow does

• Scheduled health check: Executes on a schedule (every 2 minutes) and requests your configured health-check URL.
• Health evaluation: Compares the HTTP response to the expected status code and stops if the app is healthy.
• Outage investigation: If unhealthy, fetches recent commits and relevant GitHub Actions workflow runs for the configured repository and branch.
• Targeted code retrieval: Selects a small set of candidate source files and pulls their contents from GitHub.
• Claude-based diagnosis: Sends outage details, GitHub context, and the retrieved file contents to Claude to generate a root-cause diagnosis, PR text, and file change proposals.
• Automated PR creation: If Claude proposes changes, the workflow creates a new GitHub branch, commits the updated files, and opens a pull request back into the base branch.
• Slack notification: Posts a Slack incident message including the diagnosis and PR link—or sends a separate message when no confident fix is proposed.

Use cases

• SaaS operators who want rapid triage and PR-ready fixes for recurring health-check failures.
• Automation engineers who need a hands-on “self-healing” n8n workflow with GitHub + Slack visibility.
• Teams responding to production outages where recent GitHub Actions results and code snippets speed up root-cause analysis.

Technical details

• n8n scheduling + HTTP health check
• GitHub integration: read repo contents, create branches, commit changes, and open pull requests
• Anthropic Claude: outage diagnosis and proposed code changes via API (HTTP Header Auth credential)
• Slack: incident and PR notifications via incoming webhook
• Logic nodes mentioned: if, set, code, no op, split out, aggregate