Auto-Generate & Publish SEO Articles to WordPress with GPT-4 + Postgres Tracking

🚀 What this flow does • 🔎 Selects the least-used WordPress category (tracked in PostgreSQL) • 🤖 Uses GPT (4-mini or better) to generate a fully formatted SEO article with headings, TOC, lists, CTA, and Yoast blocks • 🖼️ Creates a placeholder cover image and uploads it to WordPress Media • 📬 Publishes the final post via /wp-json/wp/v2/posts with correct category + featured image • 🧠 Logs the used category for future rotation (zero duplicates!)

⚙️ Setup in 3 mins

🏷️ Add your WordPress domain with a simple Set node:     domain=https://yourdomain.com

🔐 Create these 3 credentials in n8n:     YOUR_WORDPRESS_CREDENTIAL — for /media, /posts     YOUR_POSTGRES_CREDENTIAL — for category tracking     YOUR_OPENAI_CREDENTIAL — GPT-4-mini or better

🧱 Run the SQL from docs to create the used_categories table

✅ Manually test first 3–5 nodes to check WP auth, OpenAI response, and DB connection

🕒 Then just schedule it and let the bot write for you.

🎯 Why it's awesome This is your personal AI content writer + publisher — perfect for: • 📰 SEO content farms • 📈 Affiliate blogs • 🧰 Micro niche sites • 🤫 PBNs with rotation-safe automation

No more manual uploads, broken categories, or GPT spam. Every post is structured, beautiful, and intelligently categorized.