How To Automate Your Social Media with AI + n8n?

Tired of manually posting on social media every day? Want to grow your audience while you sleep? In this guide, I’ll show you how to create an AI-powered social media agent that automatically posts trending news to LinkedIn and Facebook—for free using n8n (a no-code automation tool).

How It Works

1. Fetches Latest News – Uses the GNews API to find trending articles.
2. Generates AI Content – Google Gemini rewrites the news into engaging posts.
3. Creates AI Images – Automatically generates visuals for each post.
4. Auto-Posts to Social Media – Publishes to LinkedIn & Facebook on a schedule.

What You’ll Need

✅ Free n8n account
✅ Free Google Gemini API Key
✅ Free GNews API Key
✅ Facebook & LinkedIn developer access (for auto-posting)

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Step 1: Set Up the n8n Workflow

1. Go to n8n.io and sign up (or use the desktop app).
2. Create a new workflow (click the + button).
3. Add a Schedule Trigger – This will run your workflow daily.

• Set it to trigger at 9 AM (or your preferred time).

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Step 2: Fetch Trending News (GNews API)

1. Add an HTTP Request Node – This will call the GNews API.
2. Configure the API Request:

• Method: GET
• URL: https://gnews.io/api/v4/top-headlines
• Query Parameters:
  • token=YOUR_API_KEY (Get it from GNews)
  • q=ecommerce (or any topic like “AI,” “marketing,” etc.)
  • lang=en (for English articles)
  • max=5 (number of articles to fetch)

1. Test the Node – You should see recent news articles in JSON format.

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Step 3: Let AI Pick the Best Article

1. Add an AI Agent Node (Google Gemini).
2. Configure Gemini API:

• Model: Gemini 1.5 Pro
• Prompt:
  "You are an expert social media strategist. Analyze these articles and pick the one most likely to get engagement. Return the title, URL, and a short summary."

1. Map the GNews data (title, description, URL) into the AI input.
2. Test the Node – It should return the best article for posting.

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Step 4: Generate AI-Powered Post Content

1. Add Another AI Agent Node (Gemini).
2. Prompt:

   "Write a LinkedIn/Facebook post about this news. Make it engaging, add hashtags, and include 'Read more: [URL]' at the end."  

3. Test the Node – You’ll get a ready-to-post social media update.

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Step 5: Create an AI Image for the Post

1. Add an HTTP Request Node (Gemini Image Generation).
2. URL: https://generativelanguage.googleapis.com/v1beta/models/gemini-pro:generateContent
3. Headers: Authorization: Bearer YOUR_GEMINI_API_KEY
4. Body (JSON):
   json { "contents": [{ "parts": [{ "text": "Generate an engaging social media image about: [ARTICLE_SUMMARY]" }] }] }
5. Test & Extract Image URL – Save the generated image for posting.

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Step 6: Auto-Post to Facebook

1. Add Facebook Graph API Node.
2. Configure:

• Endpoint: me/feed (or page_id/feed for Pages).
• Method: POST
• Parameters:
  • message = AI-generated post text
  • url = AI-generated image URL

1. Test the Node – Check your Facebook to confirm the post went live!

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Step 7: Auto-Post to LinkedIn

1. Add LinkedIn API Node.
2. Configure:

• Endpoint: ugcPosts
• Method: POST
• Body:
  json { "author": "urn:li:person:YOUR_ID", "lifecycleState": "PUBLISHED", "specificContent": { "com.linkedin.ugc.ShareContent": { "shareCommentary": { "text": "AI-generated post here" }, "media": [{ "status": "READY", "description": { "text": "AI-generated image" } }] } }, "visibility": { "com.linkedin.ugc.MemberNetworkVisibility": "PUBLIC" } }

1. Test & Confirm Posting – Refresh LinkedIn to see the automated post!

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Step 8: Schedule Daily Auto-Posting

• Go back to the Schedule Trigger and set it to run daily at your chosen time.
• Save & Activate the workflow.

🎉 Done! Your AI agent will now:
✔ Fetch trending news
✔ Write posts with AI
✔ Generate images
✔ Post to LinkedIn & Facebook automatically!

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Bonus: Expand to Twitter & Instagram

Want to add more platforms? Drop a comment below, and I’ll make a follow-up tutorial!