The Vinted Arbitrage War: Building a Scraper That Doesn't Get IP-Banned

War diary. Real failures. Real fix. No inspirational BS. I'll be honest with you: I spent three weekends building a Vinted scraper that worked exactly once. The second time I ran it, I got a 403. The third time, my entire datacenter IP range was silently blacklisted. By the fourth weekend, I wasn't writing Python anymore — I was googling "residential proxy Vinted" at 2am and reading forum posts from people who had clearly given up. This is the story of how I tried to build an arbitrage pipeline for Vinted, why everything broke, what I learned from every failure, and why I eventually stopped reinventing the wheel. If you're a dev or data engineer trying to extract data from Vinted for price monitoring, cross-border arbitrage, or inventory hunting — read this before you repeat my mistakes. Why Does My Vinted Scraper Get Blocked? (The Bot Protection Problem) Vinted is not a public API. It never was. Their internal API is undocumented, versioned inconsistently, and protected by a stack of