Transform Reddit discussions into LinkedIn post ideas with GPT-4o and Google Sheets
Needs changesNeeds changes. This template uses 1 thing(s) that n8n 3.0 removes: AI Agent v1 (old agent modes). 1 breaking item(s) found. Static check, last run 2026-10-19.
What to replace before upgrading
| Removed in 3.0 | Replace with |
|---|---|
| AI Agent v1 (old agent modes) Generate insights (v1.7) | Latest AI Agent node (Tools Agent). For SQL Agent, use a Postgres or MySQL tool with a recent AI Agent. |
Nodes used (11)
- OpenAI Chat Model
@n8n/n8n-nodes-langchain.lmChatOpenAi - Google Sheets
n8n-nodes-base.googleSheets - Reddit
n8n-nodes-base.reddit - Loop Over Items (Split in Batches)
n8n-nodes-base.splitInBatches - OpenAI
@n8n/n8n-nodes-langchain.openAi - AI Agent
@n8n/n8n-nodes-langchain.agent - Filter
n8n-nodes-base.filter - Aggregate
n8n-nodes-base.aggregate - Edit Fields (Set)
n8n-nodes-base.set - Merge
n8n-nodes-base.merge - n8n Form Trigger
n8n-nodes-base.formTrigger
What it does
Who’s it for This workflow is for marketers, founders, and content strategists who want to identify business opportunities by analyzing Reddit discussions. It’s ideal for B2B, SaaS, and tech professionals looking for fresh LinkedIn post ideas or trend insights. How it works / What it does This workflow automatically: 1. Fetches Reddit posts & comments based on a selected subreddit and keyword. 2. Extracts pain points & insights using OpenAI (ChatGPT) to identify key frustrations and trends. 3. Generates LinkedIn post ideas with headlines, hooks, and CTAs tailored for professional audiences. 4. Saves all results into Google Sheets for easy tracking, editing, and sharing. It uses AI to turn unstructured Reddit conversations into actionable content marketing opportunities. How to set up 1. Clone this workflow in your n8n instance. 2. Configure credentials: - Reddit OAuth2 (for fetching posts & comments) - OpenAI API key (no hardcoding—use credentials in n8n) - Google Sheets OAuth2 (for output) 3. Run the workflow or trigger it using the built-in Form Trigger (provide subreddit & keyword). 4. Check the generated Google Sheet for analyzed insights and post suggestions. Requirements - n8n (self-hosted or cloud) - Reddit account with API credentials - OpenAI API key (GPT-4o recommended) - Google Sheets account How to customize the workflow - Change the AI prompt to adjust tone or depth of insights. - Add filtering logic to target posts with higher engagement. - Modify the Google Sheets output schema to include custom fields. - Extend it with Slack/Email notifications to instantly share top insights.