Detect Reddit problems & auto-comment solutions with Google Gemini & Sheets

| N8N Workflow | AI Reddit Problem Detection & Auto-Solution Commenter 🤖

This n8n workflow automates Reddit community engagement by detecting posts that discuss problems and automatically replying with AI-generated solutions — powered by Google Gemini.

It’s designed for developers, automation creators, and brands who want to provide helpful, automated responses to Reddit users discussing issues in their niche.

How It Works

- The workflow starts with a Manual Trigger (When clicking ‘Execute workflow’). - Search for a Post: It scans the r/n8n subreddit (or any subreddit you set) for recent posts containing the keyword “Why I stopped using”. - Filter Posts (If Node): Filters posts that have 2 or more upvotes and non-empty text, ensuring only quality discussions are analyzed. - Edit Fields: Extracts post details such as title, body text, upvotes, creation time, and subreddit ID for AI processing.

AI Agent + Google Gemini Chat Model: - The first AI node analyzes the post and decides whether it’s describing a problem or frustration related to AI automation. - Gemini responds with “Yes” or “No.”

Conditional Branch (If1 Node): - If “Yes,” the post is confirmed as discussing a problem. - The workflow then triggers the second AI Agent.

AI Agent 2 + Gemini: - The second AI node uses Gemini to generate a helpful and concise solution addressing the issue mentioned in the Reddit post (for example, offering a fix, suggestion, or new idea).