Chromium MCP Server

MCP bridge between Chromium browsers (Arc, Vivaldi, Brave) and Claude Code: browser automation

Local serverstdio

What is the Chromium MCP server?

MCP bridge between Chromium browsers (Arc, Vivaldi, Brave) and Claude Code: browser automation. That is what the chromium mcp server brings to an AI assistant: the same capability, reachable through the Model Context Protocol rather than a separate app or dashboard.

The short version

A bridge between your Chromium-based browser and Claude Code. The official "Claude in Chrome" extension connects in some Chromium browsers (Arc, Vivaldi, and others) but automation hangs: its tools are built on the tab groups API, which is missing or broken there. This bridge uses only plain chrome.tabs / chrome.scripting / chrome.debugger, so it works in any Chromium browser that can load an extension.

The tools it exposes

The server publishes 14 tools. What each one is for:

  • browser_status — Check the connection to the extension
  • browser_tabs_list — List tabs (id, title, URL)
  • browser_navigate — Navigate to a URL; back/forward for history
  • browser_page_text — Page title, URL, and visible text
  • browser_computer — Mouse/keyboard/screenshots via CDP: clicks by coordinates or ref, drag, hover, type, key combos, scroll, zoomed region screenshot, wait
  • browser_read_page — Accessibility tree with ref ids (filter=interactive)
  • browser_find — Find elements by text/role, returns refs
  • browser_form_input — Set input/textarea/select/checkbox/contenteditable value by selector or ref
  • browser_click — DOM click by CSS selector (plain .click())
  • browser_upload_file — Put files into an
  • browser_javascript — Run JS on the page (await supported)
  • browser_console_messages — Tab console (with a regex filter)

Getting it running

The server ships on npm as chromium-bridge, so your MCP client can launch it on demand — there is no separate build step. Add the server block to your client's configuration, restart it, and the tools register themselves.

How it compares

Among the browser automation options, the useful question is rarely "what can it do" but "what does it cost you to run" — permissions, credentials, and how much of your context its toolset consumes. Chromium's toolset — browser_status, browser_tabs_list, browser_navigate and 11 more — is a fair guide to whether it matches your workflow. It is maintained by dashi96; worth a glance at recent repository activity before you build anything load-bearing on it.

This entry was verified against Chromium's own documentation before publication; SyncDev keeps the directory reviewed rather than auto-generated.

Things to watch

  • It runs with your machine's permissions. That is convenient and also the reason to think about what you point it at before you approve a tool call.
  • With 14 tools registered it takes up a noticeable share of the context window; turn it off in projects that never touch Chromium.
  • Keep per-call confirmation enabled while you learn its behaviour; it is the cheapest safeguard you have.

Available tools

ToolWhat it does
browser_statusCheck the connection to the extension
browser_tabs_listList tabs (id, title, URL)
browser_navigateNavigate to a URL; back/forward for history
browser_page_textPage title, URL, and visible text
browser_computerMouse/keyboard/screenshots via CDP: clicks by coordinates or ref, drag, hover, type, key combos, scroll, zoomed region screenshot, wait
browser_read_pageAccessibility tree with ref ids (filter=interactive)
browser_findFind elements by text/role, returns refs
browser_form_inputSet input/textarea/select/checkbox/contenteditable value by selector or ref
browser_clickDOM click by CSS selector (plain .click())
browser_upload_filePut files into an <input type="file">
browser_javascriptRun JS on the page (await supported)
browser_console_messagesTab console (with a regex filter)
browser_network_requestsTab network requests (with a regex filter)
browser_resize_windowWindow size

How to install the Chromium MCP server

{
     "mcpServers": {
       "chromium-bridge": {
         "command": "npx",
         "args": ["chromium-bridge"]
       }
     }
   }

Configuration as documented by the project. Restart the client after saving.

Example prompts to try

  • Use Chromium to browser status.
  • Use Chromium to browser tabs list.
  • Use Chromium to browser navigate.

Frequently asked questions

It connects Chromium to MCP-compatible AI assistants such as Claude and Cursor, exposing 14 tools (browser_status, browser_tabs_list, browser_navigate, and more) that the assistant can call on your behalf. Instead of copying data back and forth by hand, the assistant works with Chromium directly.