I asked Claude Code to summarize my unfulfilled Shopify orders this morning. Claude reached for its browser tool. The tool opened a fresh Chromium, navigated to admin.shopify.com , and came back with: "Log in to continue." Of course. My browser is logged in. Claude's browser isn't. This isn't a missing feature. It's an architectural property of where the browser runs. What each MCP browser tool actually does Pull their source. What browser_navigate and browser_extract actually mean differs by tool: Tool Browser runs in Session state Can access your Shopify admin?…