FoxHound

Name: FoxHound
Author: Amr Elsagaei

Agent Browser Bridge for Firefox. Drives the browser from the FoxHound MCP server over a local authenticated WebSocket so an AI agent can interact with tabs, traffic, cookies, storage, and the page.

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Install

Features & Capabilities

FoxHound is the Firefox half of an Agent Browser Bridge. It pairs with a small MCP server installed from npm so that an AI agent (Claude Code, Claude Desktop, Cursor, Antigravity, or any MCP client) can drive the browser end to end.

Once both halves are running the agent can:

Open URLs, switch tabs, click and fill forms, run JavaScript in a tab, wait for elements or navigations, upload files, and screenshot the page or any single element.
Capture every HTTP request and response with bodies. Each captured request is tagged with the PwnFox container it came from. Replay any request through the same container.
Read and write cookies, localStorage, sessionStorage, IndexedDB, and Cache Storage. Snapshot every storage layer for a tab origin in one call.
Inspect what the page already runs without injecting anything new: postMessage listeners and traffic, WebSocket frames, Web Workers, service workers, route changes, errors, dangerous DOM sinks, console output.
Pause and forward requests on demand for active testing.

Privacy. Everything stays on your machine. The extension talks only to a WebSocket server bound to 127.0.0.1, signed with HMAC-SHA256 using a 32 byte secret generated locally on first install. No analytics, no telemetry, no remote code, no third party calls.

Install the companion MCP server with npm install -g foxhound-mcp, then copy the configuration shown in the add on options page into your MCP client.

Full setup guide and issue tracker: github.com/amrelsagaei/foxhound.

User Growth & Download Statistics

Add-on

By:

Amr Elsagaei

Daily users:

Version:

1.0.4 Last updated: 2026-05-11

Version code:

6257205

Creation date:

2026-04-28

Risk:

Permissions:

Content scripts matches:

<all_urls>

Size:

167.28KB

Email:

in*****@amrelsagaei.com

URLs:

Website ,Privacy policy

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-19

Compare stats and ranking:

Ranking

# 24,350 ▼ 70

Other rankings

#223 in agent keyword 65 ▼ 3#225 in traffic keyword 57

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:

Amr Elsagaei

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/foxhound-mcp/

Email:

in*****@amrelsagaei.com

Website:

https://amrelsagaei.com

Is FoxHound 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.

FoxHound 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.
Critical ****** ****** ** *** ********* ****** * *********** ******** **** ** ** *** ******* *** ****** **** **** *** ******* *****
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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.

FoxHound is recently added, and hasn't been around long enough for us to gather enough data to accurately assess its risk level.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
Medium **** ********* *** ******* ** *** **** * ******* *** ******* *** *** ** ****** ** *****
Medium **** ********* *** ***** ** *** **** * ******* *** ********** *** *** ** ****** ** *****