BrowserTools MCP is designed with a three-tier architecture to ensure functional integrity and operational efficiency. At the top is an extension running in Chrome that directly monitors browser activity and collects data. In the middle is the Node.js server, which processes data from the browser and provides auditing logic. Finally, there is the MCP server, which serves as an interface layer with client applications such as editors.
This architectural design offers several technical advantages: the Chrome extension provides direct access to the browser's internal data, ensuring comprehensive and real-time monitoring; the Node.js back-end provides flexible processing capabilities to perform complex analysis and auditing tasks; and the communication mechanism based on the MCP protocol achieves compatibility with a wide range of development tools. In particular, the tool supports integration with the Cursor editor via simple JSON configuration (in the ~/.cursor/mcp.json file), a low-coupling design that allows the tool to flexibly adapt to different development environments.
The whole system adopts modular design, each component can run and update independently, this architecture not only ensures the stability of the system, but also leaves room for future function expansion. Developers can flexibly choose to use all functions or specific components according to their own needs.
This answer comes from the articleBrowserTools MCP: MCP service for real-time monitoring of browser activityThe
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