Automate SEO Blog Pipeline from Keywords to WordPress with GPT-5 & fal.ai Images

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Built by Paul Paul
Created on June 05, 2026

Description

✍️ AI-Powered SEO Blog Automation Workflow

Complete PostgreSQL-backed system: Keyword scoring → AI research → Multi-part content generation → fal.ai Nano Banana image generation → WordPress publishing

Real Example: AI Applications in Real Estate Playbook — fully generated, optimized, and published with this automation.

🚀 What You Get

Full n8n Workflow Package
Pre-configured automation** with 80+ connected nodes
PostgreSQL schema** for keyword tracking & blog management
3-phase system**: Scoring → Planning → Generation
Setup documentation** with customization guide

Each Blog Post Includes
2,100+ words across 6 sections (Intro, Dev 1, Dev 2, Conclusion, FAQ, Header)
2 AI-generated images via fal.ai Nano Banana (16:9 format)
Internal links to your existing content
External citations to authoritative sources
Complete SEO metadata (title, slug, description, tags)
WordPress-ready draft

⚡ Core Features

Keyword Intelligence
Multi-factor scoring algorithm (volume, competition, CPC, relevance)
Usage tracking prevents cannibalization
AI agent selects optimal clusters avoiding impossible competition

AI Content Pipeline
Perplexity Sonar Pro deep research
GPT-5 parallel section generation
Grade 13-15 reading level
Natural keyword distribution (no over-optimization)

Image Generation
fal.ai Nano Banana model** for contextual visuals
Featured image (16:9) from research summary
Body image (16:9) embedded in content
Automatic alt text generation
10s wait + 5s retry logic

Automation Infrastructure
Queries existing posts to prevent duplicates
Scheduled execution (every 2-3 days)
Error handling with retry logic
Non-blocking image generation

🔗 Required Services

OpenAI (GPT-5, GPT-4o)
OpenRouter (GPT-5 Mini)
Perplexity AI (Sonar Pro)
fal.ai (Nano Banana model)**
WordPress REST API
PostgreSQL database
n8n instance

📊 Database Schema

Keywords Table - Tracks scoring, usage, and Google Ads metrics
Cluster Blog Table - Manages topic pipeline and published URLs

Full SQL schema included in setup documentation.

🎯 Production Ready

10-15 posts/week** on autopilot
60% faster** than sequential generation (parallel processing)
Usage tracking** prevents keyword reuse
Customizable** scoring weights and relevance terms for any niche

🛠️ Setup Process

Import n8n JSON workflow
Create PostgreSQL tables (schema provided)
Add API credentials
Import keywords from Google Ads Planner
Customize relevance terms for your industry
Configure schedules and domain URL
Test manually → Enable automation

💡 Perfect For

Content marketers scaling to 10+ posts/week
SEO agencies managing multiple sites
Niche site builders needing consistent output
WordPress users wanting hands-off publishing
Low-authority sites targeting winnable keywords

🔧 Key Customization Points

Scoring algorithm weights (volume/competition/CPC/relevance)
Relevance terms for your industry (default: AI/automation)
Publishing schedule (daily/3x week/weekly)
Content length per section
Image aspect ratio and format
Website domain URL

Stop writing blogs manually. This workflow handles research, writing, fal.ai Nano Banana image generation, linking, and publishing while you focus on strategy.

Nodes Used (11)

AI Agent
@n8n/n8n-nodes-langchain.agent
Basic LLM Chain
@n8n/n8n-nodes-langchain.chainLlm
Code
n8n-nodes-base.code
HTTP Request
n8n-nodes-base.httpRequest
OpenAI
@n8n/n8n-nodes-langchain.openAi
OpenAI Chat Model
@n8n/n8n-nodes-langchain.lmChatOpenAi
OpenRouter Chat Model
@n8n/n8n-nodes-langchain.lmChatOpenRouter
Perplexity
n8n-nodes-base.perplexity
Postgres
n8n-nodes-base.postgres
Structured Output Parser
@n8n/n8n-nodes-langchain.outputParserStructured
Wordpress
n8n-nodes-base.wordpress