Everyone can vibecode a chatbot in an afternoon. Almost nobody can tell you what happens when it needs to talk to a real frontend, remember who you are, and not fall over when someone other than you tries to use it.

In this hands-on workshop, you'll build and deploy a complete agent stack from scratch: an agent on Google's Agent Platform using agents-cli, a FastAPI BFF that proxies requests to it securely, and a vibecoded React chat interface that talks to it through that BFF. By the end, your agent will remember things about you across sessions — and you'll watch it happen live, in a UI built to show exactly what it's storing and recalling.

Along the way, we'll hit the same walls I hit writing the guide this workshop is based on: why CORS isn't a security boundary, what breaks when you swap the agent underneath your BFF, and where the architecture still has gaps — auth, Agent Gateway, Model Armor — that we'll name honestly rather than pretend are solved.

You'll leave with a working, deployed, memory-enabled agent stack of your own, and a clear map of what production-grade would still require beyond it.

Bring: a laptop, a Google Cloud project, and patience for at least one live demo gremlin.