Automate blog-to-social media with GPT-4 for LinkedIn, X, and Reddit

by Le Nguyen ✓ · 797 views · created 2025-11-12 · Social Media, Multimodal AI

What this workflow does

This AI workflow has 24 nodes and runs when an HTTP POST request hits its webhook URL (plus 2 other triggers). Along the way it connects OpenAI, LinkedIn, X (Formerly Twitter) and Postgres and 1 more. It also calls n8n.crmaiinsight.com and api.twitter.com over HTTP.

How it runs

Trigger: When an HTTP POST request hits its webhook URL (plus 2 other triggers).

1. Set Link (Edit Fields (Set)): sets 1 field: link
2. RSS Read: reads an RSS feed
3. Edit Fields (Edit Fields (Set)): sets 1 field: link
4. HTTP Request: calls an HTTP API
5. Execute a SQL query (Postgres): run a query
6. Post Social Manual (HTTP Request): calls n8n.crmaiinsight.com (POST)
7. HTML: parses or builds HTML
8. If: checks a condition and branches into true / false
9. Message a model (OpenAI): uses OpenAI
10. Loop Over Items (Loop Over Items (Split in Batches)): loops over the items in batches

…plus 11 more steps. See the full node list below.

Services it uses

OpenAILinkedInX (Formerly Twitter)PostgresReddit

HTTP calls to: n8n.crmaiinsight.com, api.twitter.com

Before you upgrade to n8n 3.0

Nodes used (17)

• Manual Triggern8n-nodes-base.manualTrigger
• HTTP Requestn8n-nodes-base.httpRequest
• HTMLn8n-nodes-base.html
• OpenAI@n8n/n8n-nodes-langchain.openAi
• Edit Fields (Set)n8n-nodes-base.set
• LinkedInn8n-nodes-base.linkedIn
• X (Formerly Twitter)n8n-nodes-base.twitter
• Waitn8n-nodes-base.wait
• Schedule Triggern8n-nodes-base.scheduleTrigger
• Webhookn8n-nodes-base.webhook
• RSS Readn8n-nodes-base.rssFeedRead
• Postgresn8n-nodes-base.postgres
• Ifn8n-nodes-base.if
• Loop Over Items (Split in Batches)n8n-nodes-base.splitInBatches
• Respond to Webhookn8n-nodes-base.respondToWebhook
• Mergen8n-nodes-base.merge
• Redditn8n-nodes-base.reddit

From the author

Turn your blog into a set-and-forget content engine: every new article is instantly repurposed into channel-specific social posts with visuals, keeping your brand visible on LinkedIn, X, and Reddit without extra copywriting time. Perfect for lean marketing…

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