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

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Created by: Thomas || darkrangeholdings

Thomas

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Last update 4 hours ago

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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 post 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.