Browsermcp Ext
A Gemini CLI extension that integrates BrowserMCP, giving your AI agent the ability to navigate and interact with web pages directly in your browser.
Install
$ agentstack add mcp-derailed-dash-browsermcp-ext ✓ scanned · ✓ verified, works with Claude Code, Cursor, and more.
Security review
✓ PassedNo issues found. Passed automated security review. · v0.1.0 How review works →
- ✓ Prompt-injection patterns
- ✓ Secret / credential exfiltration
- ✓ Dangerous shell & filesystem operations
- ✓ Untrusted network calls
- ✓ Known-malicious package signatures
What it can access
- ✓ Network access No
- ✓ Filesystem access No
- ✓ Shell / process execution No
- ✓ Environment & secrets No
- ✓ Dynamic code execution No
From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.
Verified badge
Passed review? Show it. Paste this badge into your README, it links to the public security report.
Links to your public security report.[](https://agentstack.voostack.com/security/report/mcp-derailed-dash-browsermcp-ext) Reliability & compatibility
Declared compatibility
Compatibility is declared by the source manifest. End-to-end runtime verification is coming, see below.
We're building live execution health for every listing: tool-call success rate, median latency, uptime, and last-checked timestamps, measured, not self-reported. It isn't live yet, so we don't show numbers we can't stand behind.
How agent discovery & health will work →About
BrowserMCP Extension for Gemini CLI
This is a Gemini CLI extension that integrates BrowserMCP, providing your AI agent with the ability to view, navigate, and interact with web pages directly in your browser.
What This Extension Does
By giving the agent "eyes" and "hands", this extension enables the Gemini CLI to:
- Navigate to specific URLs
- Inspect and read the DOM
- Click buttons and links
- Type text into form fields
- Read browser console logs
This makes the extension incredibly useful for automating UI testing, extracting data from complex web apps, or having the agent perform repetitive web-based workflows on your behalf.
Prerequisites & How It Works
This extension is a lightweight wrapper that connects the Gemini CLI to the BrowserMCP server.
For this to work, you must have the BrowserMCP Chrome extension installed in your active browser session:
- Install the BrowserMCP Chrome Extension. (It takes about 30 seconds.)
- Navigate to the web page you want the agent to interact with.
- Click the BrowserMCP extension icon and click "Connect".
Note: The agent cannot spawn new browser sessions or operate in "headless" mode. It relies entirely on the active, connected tab.
Installation
To install this extension into your Gemini CLI, run:
gemini extensions install https://github.com/derailed-dash/browsermcp-extOnce installed, simply start the Gemini CLI and run /mcp to verify the browsermcp tools are loaded.
Disclaimer
I am the author of this specific Gemini CLI extension wrapper. However, I am not the author of the BrowserMCP server or the underlying BrowserMCP project it relies upon. Full credit goes to the creators of BrowserMCP.
Source & license
This open-source MCP server is cataloged on AgentStack and links to its original source — we do not rehost the code.
- Author: derailed-dash
- Source: derailed-dash/browsermcp-ext
- License: MIT
Install and usage instructions live in the source repository linked above.
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Versions
- v0.1.0 Imported from the upstream source.