n8n Review 2026: I Used It for 8 Months to Build AI Agents (Honest Verdict)

Last March, a client from Dubai approached me with a nightmare project. They wanted an AI agent that could read emails, extract invoice data, validate it against their inventory system, and automatically create purchase orders. The catch? Their team had zero coding experience and wanted to maintain it themselves. Photo by Declan Sun via Unsplash I'd been using Zapier for simple automations, but this needed something more powerful. That's when I discovered n8n. Eight months and twelve client projects later, I'm ready to share everything I learned about this tool. What Actually Is n8n? Think of n8n as a digital assembly line builder. Instead of writing code, you drag and drop boxes (called nodes) onto a canvas. Each box does one thing - maybe it reads an email, or talks to ChatGPT, or updates a spreadsheet. You connect these boxes with lines to create workflows. The "AI agent" part comes from connecting AI services like OpenAI, Claude, or local AI models to these workflows. So your agent