✍️ AI Agent to Create Linkedin Posts for Blog Promotion with GPT-4o

Tags: Automation, AI, Marketing, Content Creation

Context

I’m a Supply Chain Data Scientist and content creator who writes regularly about data-driven optimization, logistics, and sustainability. Promoting blog articles on LinkedIn used to be a manual task — until I decided to automate it with N8N and GPT-4o.

This workflow lets you automatically extract blog posts, clean the content, and generate a professional LinkedIn post using an AI Agent powered by GPT-4o — all in one seamless automation.

Save hours of repetitive work and boost your reach with AI.

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Who is this template for?

This template is perfect for:

• Bloggers and writers who want to promote their content on LinkedIn
• Marketing teams looking to automate professional post-generation
• Content creators using Ghost platforms

It generates polished LinkedIn posts with:

• A hook
• A quick summary
• A call-to-action
• A signature to drive readers to your contact page

How does it work?

This workflow runs in N8N and performs the following steps:

1. 🚀 Triggers manually or you can add a scheduler
2. 📰 Pulls recent blog posts from your Ghost site (via API)
3. 🧼 Cleans the HTML content for AI input
4. 🤖 Sends content to GPT-4o with a tailored prompt to create a LinkedIn post
5. 📄 Records all data (post content + LinkedIn output) in a Google Sheet

What do I need to start?

You don’t need to write a single line of code.

Prerequisites:

• A Ghost CMS account with blog content
• A Google Sheet to store generated posts
• An OpenAI API Key
• Google Sheets API connected via OAuth2

Next Steps

Use the sticky notes in the workflow to understand how to:

• Add your Ghost API credentials
• Link your Google Sheet
• Customize the AI prompt (e.g., change the author name or tone)
• Optionally add auto-posting to LinkedIn using tools like Buffer or Make

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Notes

• You can adapt this template for Twitter, Facebook, or even email newsletters by adjusting the prompt and output channel.
• This workflow was built using n8n 1.85.4

Submitted: April 9th, 2025