Make Vibe Coding Safe: How to Test with Playwright | Amazon AGI Lab

[2026 - DAY 3 - LIGHTNING TALK] Vibe coding is fast, but it often skips the safety rails: features look fine in a demo and then break in real user flows. Especially when you iterate on them. This talk shows how to make vibe-coded web apps reliable by adding end-to-end tests with Playwright that are quick to write, stable in CI, and focused on what actually matters. A big shift is that modern coding assistants like Cursor and Claude Code can run commands and iterate on real failures. Whats missing is the glue, between e.g. Claude Code to run a test and gets its state. I will show practical workflows for writing tests faster using MCP Skills and Playwright MCP, both in an editor and inside Claude Code environments. Based on lessons from building multiple websites over the last months, I will share a repeatable approach for growing a small, high-signal test suite that keeps up with rapid development and gives you the confidence to ship more changes without fear. SPEAKER: Max Schmitt - Member of Technical Staff, Amazon AGI Lab (and prior core contributor to Microsoft Playwright) 👉 Sign up for our "No BS" Newsletter to get the latest technical data & AI content: https://aicouncil.com/newsletter ABOUT AI COUNCIL: AI Council brings together the brightest minds in data to share industry knowledge, technical architectures and best practices in building cutting edge data & AI systems and tools. FIND US: Website: https://aicouncil.com/ LinkedIn: https://www.linkedin.com/company/aicouncilconf/ X: https://x.com/aicouncilconf