How I Built a Research Agent for Richer Blog Content (n8n + Vector Store)

Struggling to get Ai to write content that actually says something new? In this tutorial, I’ll show you how I built a research agent using n8n, OpenAI, Perplexity and a vector store setup that helps me gather, store and reuse deep web insights for every blog post. This agent doesn’t just automate research it creates a repeatable flow that pulls live context from trusted sources, extracts key takeaways and saves it all to Supabase for use in my RAG-powered content pipeline. Whether you're writing solo or leading a content team, this is how I’ve started producing richer, more insightful blog …