Our first extension answered one question while you browse: is this store agent-ready? A green dot in your toolbar, fired by a single probe to /.well-known/ucp. It quietly became our biggest discovery engine.
Today we're shipping our second extension — and it answers the obvious follow-up: okay, so what actually happens when an agent shops here? — without making you leave the page.
Meet the UCP Playground — AI Shopping Agent extension. Open Chrome's side panel on any UCP-enabled store, pick a model, and an AI agent shops it live — right beside the page. It searches, compares, builds a cart, and reaches checkout, driving the store through its own published UCP tools. No screen-scraping, no separate tab.
Install it free from the Chrome Web Store →
From a green dot to a live agent
