BRMS — Browser Runtime MCP Server is a Chrome extension designed to facilitate AI-assisted debugging by exposing live browser states such as the DOM, network activity, console errors, and styles. This tool is particularly beneficial for developers, allowing them to diagnose UI issues more effectively by providing AI tools direct access to the current state of the browser tab, rather than relying solely on code snippets or manual descriptions. Its robust feature set includes capabilities to list open tabs, inspect the DOM, capture screenshots, and review network calls.

With BRMS, developers can quickly address issues like overlapping elements, broken requests, and runtime errors by correlating browser signals across various domains. The extension works alongside a local Native Messaging Host, creating a local MCP endpoint that enhances the interactivity and accuracy of browser debugging processes, making it a valuable addition to any developer's toolkit.