Automate LinkedIn Comment Replies with GPT-3.5 & Track in Google Sheets

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.