n8n SEO Site Architecture Workflow: Claude + WhatsApp

Turn 10,000+ SEO keywords into a ready-to-build site architecture—automated with n8n, Claude, and WhatsApp

This n8n SEO Site Architecture Workflow: Claude + WhatsApp ingests your keyword list, clusters it, and uses Anthropic Claude to label topics and consolidate pillar themes—then outputs a complete pillar → cluster → supporting page structure. Optionally, it posts the plan to a CMS endpoint and sends you a summary via WhatsApp Business Cloud.

What this workflow does

• Receives SEO keywords via a POST webhook (or runs a manual test), then normalizes, de-duplicates, and caps input to your configured maximum (up to 10,000 keywords).
• Clusters keywords algorithmically by shared core terms (after removing stopwords/modifiers), selecting a primary keyword and supporting keywords per cluster.
• Uses Anthropic Claude in batches to generate a human-readable topic label and suggested pillar for each cluster.
• Consolidates pillar names by calling Claude again to merge near-duplicates into a canonical pillar set.
• Builds a final architecture with URL-friendly slugs, then asks Claude to review balance and suggest internal-linking and build priority.
• Outputs results as webhook response JSON; optionally posts the final report to a CMS/content-planning API endpoint and sends a completion summary via WhatsApp.

Use cases

• Generate an end-to-end SEO content plan for a SaaS product using a large keyword export.
• Turn keyword research into site architecture for faster onboarding of new content writers or SEO teams.
• Automate internal linking and build prioritization after topic clustering.

Technical details

• n8n nodes: if, set, code, webhook, WhatsApp, sticky note.
• Anthropic Claude integration: create an Anthropic API credential (HTTP Header Auth) and call https://api.anthropic.com/v1/messages with your API key.
• Communication: WhatsApp Business Cloud for completion summaries.