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gemini-browser-mcp

v1.1.3

Published

MCP server that bridges Claude Code to Google Gemini via a Chrome extension

Vulnerabilities

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  • 0Low

Links

Git

Maintainers

walkoudwalkoud

Keywords

mcpgeminiclaudechrome-extensionmodel-context-protocolclaude-code

Readme

gemini-browser-mcp

MCP server that bridges Claude Code to Google Gemini via a Chrome extension — no API key required.

Instead of using the Gemini API, it interacts with the Gemini web app directly, meaning you get all the features available in your browser: Flash, Pro, Extended thinking, uploads, and more.

Quick Start

npx gemini-browser-mcp

This runs the setup wizard, which configures Claude Code for you automatically.

Manual Setup

1. Install the Chrome Extension

Download the extension from the GitHub releases page or clone the repo and load it as an unpacked extension:

git clone https://github.com/Walkoud/gemini-browser-mcp.git

Then load the chrome-extension/ folder in Chrome:

  1. Go to chrome://extensions/
  2. Enable Developer mode (top-right toggle)
  3. Click Load unpacked and select the chrome-extension/ folder

Make sure you're logged in at gemini.google.com.

2. Configure Claude Code

npx gemini-browser-mcp

Or add it manually:

claude mcp add gemini-browser-mcp -- npx gemini-browser-mcp start

Usage

In Claude Code, use the ask_gemini_web tool to send prompts to Gemini.

Examples

ask_gemini_web 1+1
ask_gemini_10 web Explain quantum computing in simple terms
ask_gemini_web Write a haiku about MCP servers

Model Support

Whatever model you select in the Gemini web UI is what gets used — Flash, Pro, Extended thinking, etc. The extension detects the current mode and adjusts the timeout accordingly (longer for Extended thinking).

The popup also shows the active model and thinking mode at a glance.

How it works

  1. The Chrome extension connects to a local WebSocket server
  2. Claude Code sends prompts to Gemini through the web interface (content script)
  3. The extension waits for the response to appear in the DOM and relays it back
  4. No API keys needed — everything goes through your browser session