MCP Browser Kit M2

Name: MCP Browser Kit M2
Author: mcp-browser-kit

By: mcp-browser-kit Add-on

Allow MCP Browser Kit to interact with the browser.

Overview

Firefox Add-ons Store

Daily users

Data as of 2026-09-11

Version:

10.1.4

Last updated: 2026-09-02

Features & Capabilities

MCP Browser Kit is a high-performance browser extension and Model Context Protocol (MCP) server bridge designed to empower AI assistants, coding agents, and LLMs to seamlessly interact with your local web browser.

Built on open standards, MCP Browser Kit bridges the gap between your local AI development environment (such as Claude Desktop, Antigravity, or custom MCP clients) and your live Firefox browser sessions.

Readable Page Extraction: Converts raw HTML DOM into structured, clean readable text suited for LLM context windows.
Interactive Element Inspection: Automatically indexes buttons, form inputs, links, and clickable controls with unique selectors.
Tab & Window Context Awareness: Allows AI agents to list active tabs, inspect tab titles/URLs, and switch between browser contexts dynamically.

Element Interaction: Supports element clicking, coordinate targeting, scrolling, and keyboard input.
Smart Form Auto-Fill: Intelligently fills textboxes, textareas, checkboxes, dropdowns, and rich content-editable fields.
JavaScript Execution: Safely invokes custom script routines in page contexts for advanced browser workflows.
Media & Visual Snapshots: Enables agents to capture visual tab snapshots for multimodal reasoning.

Security and user privacy are foundational principles of MCP Browser Kit:

100% Local Communication: All communication takes place strictly over your local loopback interface (127.0.0.1).
No Third-Party Analytics: No telemetry, browsing history, or personal data is ever collected or dispatched to remote cloud servers.
User-In-The-Loop Control: Browser actions are triggered only when explicitly requested by your local AI assistant during active sessions.

Install the Extension: Keep this Firefox extension enabled in your browser.
Start the MCP Server: Run the lightweight companion server in your terminal: bash npx @mcp-browser-kit/server@latest
Configure Your AI Assistant: Add the MCP server entry to your client configuration (e.g. mcpServers in Claude Desktop or Antigravity): json { "mcpServers": { "browser-kit": { "command": "npx", "args": ["@mcp-browser-kit/server@latest"] } } }
Start Automating: Ask your AI assistant to read pages, automate tasks, or fill forms directly in Firefox!

MCP Browser Kit is fully open-source under the MIT License.

GitHub Repository: https://github.com/ndthanhdev/mcp-browser-kit
Issue Tracker & Support: https://github.com/ndthanhdev/mcp-browser-kit/issues

User Growth & Download Statistics

Add-on

By:

mcp-browser-kit

Daily users:

Version:

10.1.4 Last updated: 2026-09-02

Version code:

6380676

Creation date:

2025-11-14

Firefox add-on GUID:

{264f8236-2b24-4051-bb27-17f26fe2f260}

Firefox add-on numeric ID:

2956298

Weekly download count:

Firefox on Android:

Risk:

Permissions:

tabs
activeTab
scripting
storage
webNavigation
<all_urls>
*://localhost:*/*
*://127.0.0.1:*/*

Content scripts matches:

<all_urls>

Size:

787.56KB

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-09-11

Compare stats and ranking:

Ranking

# 39,014 ▼ 482

Other rankings

#226 in browser tab keyword 73 ▼ 2#236 in browser keyword 73 ▼ 2

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

mcp-browser-kit

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/mcp-browserkit-m2/

Is MCP Browser Kit M2 Safe?

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

MCP Browser Kit M2 requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk impact analysis details

Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
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Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

MCP Browser Kit M2 is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details

High This extension was recently updated in the past month. New updates may not be stable or safe.
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