n8n Webhook to SEO Blog: Gemini + Google Docs Email

Instant SEO Blog Drafts from a Webhook — Powered by Gemini + Google Docs

Send this n8n workflow a topic, keywords, and tone via webhook, and it will automatically research with Google Vertex AI Gemini, write a 1,500-word SEO blog post, save it to Google Docs, email the document link, and return a JSON success response.

What this workflow does

• Receives a POST webhook request with: topic, keywords, tone, and an optional email address.
• Uses Google Vertex AI (Gemini) for research to generate bullet points including key facts, statistics, and an expert quote.
• Generates the full SEO article by combining the research with your requested keywords and tone, including a meta title and meta description, written to ~1,500 words.
• Creates a new Google Docs document titled with the topic and inserts the generated blog post text.
• Sends an email to the provided address containing the Google Docs link.
• Responds back with JSON to confirm completion (including the document URL and status).

Use cases

• For SaaS operators: offer an “instant SEO article” feature where users submit topic + keywords and receive a ready-to-edit Google Doc.
• For automation engineers: streamline content production pipelines using webhook-driven inputs and automated document publishing.
• For marketing teams using n8n: quickly draft SEO blog posts with consistent structure (research → article → meta fields → shareable doc).

Technical details

• n8n nodes: Webhook, Code, HTTP Request, Google Docs (document creation), Email Send, Respond to Webhook.
• AI integration: Google Vertex AI via HTTP Request to Gemini (two-step flow: research bullets, then full blog generation).
• Authentication/setup: configure Vertex AI API key + project ID, set Google Docs OAuth2, and provide SMTP credentials for Email Send.

Includes SEO-ready output (meta title + meta description) and automated distribution via email—all triggered through a single webhook.