This AI Agent Extracts Invoice Data Without Breaking (n8n Workflow)

Link to n8n workflow template ➡️ : https://www.cradl.ai/posts/how-to-extract-data-from-invoices-in-n8n In this video, I show you how to build a fully automated, production-grade invoice extraction pipeline using n8n — it reads PDFs from Gmail, uses AI to extract key data, flags uncertain predictions for human review, and exports structured data straight to Google Sheets. No code required. What you'll learn: → How to connect Gmail, AI, and Google Sheets in n8n → Setting up human-in-the-loop approval so nothing slips through → Handling messy or inconsistent PDF invoices automatically Perfect for serious businesses looking for reliable, production ready automation. TIMESTAMPS 🕒 00:24 - What we are building 00:49 - Pull invoices from Gmail 01:01 - Setup your data extraction AI agent in Cradl AI 01:38 - Edit fields, validators and formatters 02:34 - Human-in-the-loop review interface 03:00 - Connect agent with n8n 03:27: Setup export to Google Sheets