Detect Reddit problems & auto-comment solutions with Google Gemini & Sheets
Ready for 3.0Ready for 3.0. This template uses no nodes that n8n 3.0 removes. No removed nodes, versions or helpers found. Static check, last run 2026-10-19.
What this workflow does
This AI workflow has 13 nodes and runs manually, when you click “Execute workflow”. Along the way it connects Google Gemini Chat Model, Reddit and Google Sheets.
How it runs
Trigger: Manually, when you click “Execute workflow”.
- Post Searching (Reddit): search
- If: checks a condition and branches into true / false
- Value setup (Edit Fields (Set)): sets 7 fields: title, selftext, ups…
- AI Agent: runs an AI agent, with model: Google Gemini Chat Model
- Merge: merges the data from its input branches
- If: checks a condition and branches into true / false
- AI Agent: runs an AI agent, with model: Google Gemini Chat Model
- Merge: merges the data from its input branches
- Append row in sheet (Google Sheets): append
- Create a comment in a post (Reddit): work with post comment
Services it uses
Before you upgrade to n8n 3.0
Nothing in this workflow is removed in n8n 3.0, so it should import and run after the upgrade.
Nodes used (8)
- Manual Trigger
n8n-nodes-base.manualTrigger - AI Agent
@n8n/n8n-nodes-langchain.agent - Google Gemini Chat Model
@n8n/n8n-nodes-langchain.lmChatGoogleGemini - Merge
n8n-nodes-base.merge - Reddit
n8n-nodes-base.reddit - Google Sheets
n8n-nodes-base.googleSheets - If
n8n-nodes-base.if - Edit Fields (Set)
n8n-nodes-base.set
From the author
| 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…