Automatic Blog Post Generation from WooCommerce Products with GPT-4.1-mini

What it does

This workflow automatically creates and publishes engaging blog posts for products in your WooCommerce store using OpenAI.
Every 6 hours (schedule adjustable), it randomly selects a product from your store, generates a fun, curiosity-driven post, formats it for WordPress, and publishes it — all without manual intervention.

How it works

1. Schedule Trigger – Runs on a set interval (default: every 6 hours).
2. Pull WooCommerce Products – Uses the WooCommerce REST API to retrieve up to 100 products.
3. Sort Randomly & Select One – Ensures variety by picking a different product each run.
4. OpenAI Blog Post Generation – Sends the product link and a creative prompt to GPT-4.1-mini for a casual, shareable blog post.
5. Format Post – Extracts title, content, slug, and excerpt from AI output.
6. Publish to WordPress – Posts directly via the WP REST API with your chosen category.

Key features

• Hands-off content creation — Runs automatically on your schedule.
• Unique, non-corporate tone — Prompt crafted for casual, social-media-friendly style.
• Product variety — Randomized selection keeps posts fresh.
• End-to-end automation — From product data to live blog posts in minutes.
• Easy to customize — Adjust prompt, schedule, categories, or post format.

Setup instructions

1. WooCommerce

   • Enable REST API and create a key with Read permissions.
   • Store your API key/secret in n8n as Basic Auth credentials.
   • Update the “Pull WooCommerce Product” URL to your store domain.

2. OpenAI

   • Add your API key in n8n's OpenAI credentials.
   • Optionally adjust model or prompt for your tone/style.

3. WordPress

   • Enable REST API and create an Application Password or Basic Auth user with Author or higher permissions.
   • Add credentials to the “Publish to WordPress” node.
   • Update post category ID in the “Publish” node if needed.

Costs

• OpenAI: per-token usage (GPT-4.1-mini is cost-efficient for blog-length content).
• Hosting: Your n8n instance, WooCommerce, and WordPress hosting costs.

Troubleshooting

• No products retrieved: Check WooCommerce API credentials and endpoint URL.
• Post fails to publish: Verify WordPress API credentials and category ID.
• Formatting issues: Adjust the “Format Post For Publishing” code node to tweak parsing.