I tried native WebMCP in a Quarkus order page: three browser tools, with return eligibility and refund calculations kept in Java. Bob calls the page through Chrome DevTools MCP. The tutorial checks the returned draft against the visible page, including rejected inputs, cancellation, and late responses after clearing. Experimental API, pinned versions, runnable source. The workflow prepares a draft; it submits nothing. https://www.the-main-thread.com/p/quarkus-webmcp-ibm-bob-browser-tools #WebMCP #Quarkus #Java