Automate LinkedIn comment replies with GPT-3.5 & track in Google 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.
Nodes used (6)
- HTTP Request
n8n-nodes-base.httpRequest - Edit Fields (Set)
n8n-nodes-base.set - If
n8n-nodes-base.if - OpenAI
@n8n/n8n-nodes-langchain.openAi - Schedule Trigger
n8n-nodes-base.scheduleTrigger - Google Sheets
n8n-nodes-base.googleSheets
What it does
How it works This workflow automates LinkedIn community engagement by monitoring post comments, filtering new ones, generating AI-powered replies, and posting responses directly on LinkedIn. It also logs all interactions into Google Sheets for tracking and analytics. Step-by-step Trigger & Fetch - A Schedule Trigger runs the workflow every 10 minutes. - The workflow fetches the latest comments on a specific LinkedIn post using LinkedIn’s API with token-based authentication. Filter for New Comments - Retrieves the timestamp of the last processed comment from Google Sheets. - Filters out previously handled comments, ensuring only fresh interactions are processed. AI-Powered Reply Generation - Sends the new comment to OpenAI GPT-3.5 Turbo with a structured prompt. - AI generates a professional, concise, and engaging LinkedIn-appropriate reply (max 2–3 sentences). Post Back to LinkedIn - Automatically posts the AI-generated reply under the original comment thread. - Maintains consistent formatting and actor identity. Data Logging - Appends the original comment, AI response, and metadata into Google Sheets. - Enables tracking, review, and future engagement analysis. Benefits - Saves time by automating LinkedIn comment replies. - Ensures responses are timely, professional, and on-brand. - Maintains authentic engagement without manual effort. - Prevents duplicate replies by filtering with timestamps. - Creates a structured log in Google Sheets for auditing and analytics.