Multi-Agent LinkedIn Content Creation with GPT-4o, Google Sheets, and Human Review

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Built by Ailin Werner Ailin Werner
Created on December 26, 2025

Description

Description:
This is a Production-Grade Multi-Agent Content Engine designed for creators who prioritize technical authority over generic AI output.

Unlike standard "one-shot" prompts, this system uses a Chain-of-Thought (CoT) architecture to separate logical blueprinting from creative writing. It features a Persistent Memory loop via Google Sheets to ensure topic variety and a dedicated Compliance Editor to enforce strict branding rules (e.g., "Sentence Case" and spaced hyphens).

Built with enterprise resiliency in mind, it includes Global Error Handling and a Human-in-the-Loop Gmail approval gate with a 48-hour auto-timeout.

I built this to solve the 'Technical Content' bottleneck. It ensures that my social presence reflects the same high-quality engineering standards I apply to my client's n8n workflows.

Key features:
Persistent Topic Memory: Automatically scans your Google Sheets history to prevent repeating technical topics.

Multi-Agent Pipeline: Specialized agents for Topic Selection, Structural Architecture, Copywriting, and Brand Compliance.

Style Enforcement: A final "Editor" agent that strips AI fluff and ensures a professional, human-sounding tone.

Resilient Design: Features a global Error Trigger for instant failure notifications and an Approval Timeout to maintain system resources.

Human-in-the-Loop: Sends a clean draft to Gmail for manual image pairing and final review before posting.

How to setup
Google Sheets: Prepare a sheet with columns for Topic, Status, and Difficulty.

Credentials: Connect your OpenAI (or Gemini) and Gmail accounts.

IDs: Replace the placeholder Sheet ID and Recipient Email address in the nodes.

Error Handling: Point the Error Trigger notification to your preferred email or Slack channel.

This workflow was created by Ailin Werner and shared publicly on the n8n community template library. n8nFind indexes it for discovery — the workflow remains the property of its original creator.

Nodes Used (5)

AI Agent
@n8n/n8n-nodes-langchain.agent
Gmail
n8n-nodes-base.gmail
Google Sheets
n8n-nodes-base.googleSheets
OpenAI Chat Model
@n8n/n8n-nodes-langchain.lmChatOpenAi
Structured Output Parser
@n8n/n8n-nodes-langchain.outputParserStructured