Automate GitHub PR linting with Google Gemini AI and auto-fix PRs

LintGuardian: Automated PR Linting with n8n & AI

What It Does

LintGuardian is an n8n workflow template that automates code quality enforcement for GitHub repositories. When a pull request is created, the workflow automatically analyzes the changed files, identifies linting issues, fixes them, and submits a new PR with corrections. This eliminates manual code style reviews, reduces back-and-forth comments, and lets your team focus on functionality rather than formatting.

How It Works

The workflow is triggered by a GitHub webhook when a PR is created. It fetches all changed files from the PR using the GitHub API, processes them through an AI-powered linting service (Google Gemini), and automatically generates fixes. The AI agent then creates a new branch with the corrected files and submits a "linting fixes" PR against the original branch. Developers can review and merge these fixes with a single click, keeping code consistently formatted with minimal effort.

Prerequisites

To use this template, you'll need:

1. n8n instance: Either self-hosted or using n8n.cloud 2. GitHub repository: Where you want to enforce linting standards 3. GitHub Personal Access Token: With permissions for repo access (repo, workflow, admin:repohook) 4. Google AI API Key: For the Gemini language model that powers the linting analysis 5. GitHub webhook: Configured to send PR creation events to your n8n instance