What I Learned Building an Autonomous Deal-Hunting Agent System

Over the past week I built a multi-agent AI system that autonomously scans the internet for bargains, estimates the true value of products using three different pricing techniques, and pushes a notification straight to my phone the moment it finds a deal worth acting on. Along the way I picked up a ton of practical, transferable lessons about agentic AI architecture, RAG, fine-tuning vs. prompting, tool calling, and shipping a real (if scrappy) product with a Gradio front end. This post is my w...