Developer OperationsDifficulty: Intermediate 6 Nodes · Verified 2026-10-17

Automated GitHub Pull Request Diff & Security Auditor

Triggered on every Pull Request webhook: fetches the git diff, checks for hardcoded secrets or SQL injection risks, and posts inline review comments.

Interactive Pipeline Architecture

Click any node below to inspect its configuration

Integrations: GitHub Webhooks → Claude 3.7 Sonnet → GitHub REST API

Active Node: GitHub Webhook

Listens for pull_request.opened and synchronize

Node Role: Trigger

Step-by-Step Setup Instructions

1Import the workflow JSON and copy the generated n8n Webhook URL.
2In your GitHub repository Settings -> Webhooks, add the URL and select 'Pull requests'.
3Configure your GitHub Personal Access Token (repo scope) and Anthropic API key.

Connected Services & Credentials

GitHub WebhooksClaude 3.7 SonnetGitHub REST API

Production Error-Handling Notes

Automatically skips binary files, lockfiles (package-lock.json), and diffs larger than 120KB to prevent token overflow.

github-pr-ai-security-reviewer.n8n.json

{
  "name": "DevHubTools - GitHub PR AI Security Auditor",
  "nodes": [
    {
      "id": "1",
      "name": "GitHub PR Webhook",
      "type": "n8n-nodes-base.webhook",
      "position": [
        200,
        280
      ]
    },
    {
      "id": "2",
      "name": "Fetch Diff Files",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        440,
        280
      ]
    },
    {
      "id": "3",
      "name": "Claude Security Analyzer",
      "type": "@n8n/n8n-nodes-langchain.agent",
      "position": [
        680,
        280
      ]
    },
    {
      "id": "4",
      "name": "Post GitHub Review Comment",
      "type": "n8n-nodes-base.github",
      "position": [
        920,
        280
      ]
    }
  ]
}

Full Production Bundle

AI Agent Starter Kit ($19)

A clean, framework-light TypeScript skeleton for building reliable AI agents without heavy abstraction bloat. Includes tool-calling loops, JSON schema output enforcement, SQLite/Turso conversation memory, and automatic retry with exponential backoff.

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