Kitsune

Name: Kitsune
Author: junyeong-nero

by junyeong-neroversion 0.7.3i★ –iRuns on your computer

Registry nameio.github.junyeong-nero/kitsune

Install

Overview

Description from the maker (original English)

Let your coding agent use the Firefox, Zen, or LibreWolf browser you already have open.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs on your computer
Transport: stdio
Category: Web & browsers

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on your computer with your user’s permissions (files, network, apps).
You fill in yourself: KITSUNE_MODE, KITSUNE_CAPS, KITSUNE_PUBLISH, KITSUNE_ASK_BEFORE_ACT

You need

PyPIPython’s uv installed (for the uvx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "kitsune": {
      "command": "uvx",
      "args": [
        "kitsune-browser-mcp"
      ],
      "env": {
        "KITSUNE_MODE": "your-value",
        "KITSUNE_CAPS": "your-value",
        "KITSUNE_PUBLISH": "your-value",
        "KITSUNE_ASK_BEFORE_ACT": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add kitsune --env KITSUNE_MODE=your-value --env KITSUNE_CAPS=your-value --env KITSUNE_PUBLISH=your-value --env KITSUNE_ASK_BEFORE_ACT=your-value -- uvx kitsune-browser-mcp

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "kitsune": {
      "command": "uvx",
      "args": [
        "kitsune-browser-mcp"
      ],
      "env": {
        "KITSUNE_MODE": "your-value",
        "KITSUNE_CAPS": "your-value",
        "KITSUNE_PUBLISH": "your-value",
        "KITSUNE_ASK_BEFORE_ACT": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "kitsune": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "kitsune-browser-mcp"
      ],
      "env": {
        "KITSUNE_MODE": "your-value",
        "KITSUNE_CAPS": "your-value",
        "KITSUNE_PUBLISH": "your-value",
        "KITSUNE_ASK_BEFORE_ACT": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

KITSUNE_MODE env
Task surface and per-request policy: read, draft, or act
KITSUNE_CAPS env
Comma-separated capability groups to enable; all enables every group except storage and history
KITSUNE_PUBLISH env
Groups listed when a session starts; other enabled tools stay reachable through the gateway tools
KITSUNE_ASK_BEFORE_ACT env
Set to 1 to hold submits, payment pages, JavaScript, and cookie access until the call is confirmed

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account junyeong-nero, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
– Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Web & browsersi

More stars than 0% of the other 881 servers in this category
Published to the registry more recently than 94% of the other 881 servers in this category
Basic checks equal to or better than 100% of the other 881 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Kitsune safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.7.3) reached the registry 2 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Python (uv) on your computer.

What can I use instead?

In the same category: Browser Use, Chrome DevTools MCP, MCP Server Browser

Alternatives

Servers in the same category from other makers, sorted by stars.

Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

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by ChromeDevTools

Lets AI use Chrome’s developer tools to inspect pages, find what makes them slow and spot errors. Made by the Chrome DevTools team.

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MCP Server Browser

by bytedance

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Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

Kitsune

Let your coding agent use the browser you already have open, while you keep using it too.

Kitsune connects Claude Code, Codex, Pi, OpenCode and other MCP clients to Firefox, Zen or LibreWolf. The agent works in background tabs of its own, signed in wherever you are signed in. It can read your tabs, but it has to ask before it changes one. There is no Playwright, Chromium or WebDriver to install.

New in 0.7.2: the agent asks for your tab, and you approve, take it back and clean up from the toolbar popup. A real recording on Wikipedia, sped up while the agent thinks ( full 45-second video ).

Why Kitsune?

It works beside you. New tabs open in the background, so the page you are on stays in front. Your tabs, and tabs other agents opened, are read-only to the agent: it can read them, but it cannot click, type, scroll, navigate or close them. If you start typing in one of the agent's own tabs, it waits.
You stay in charge. When the agent needs one of your tabs, it asks, and you answer in Kitsune's toolbar popup. You can take the tab back at any time. The popup also shows whether the agent is connected, and closes all of the agent's tabs with one click. Tabs the agent leaves idle close by themselves after five minutes (you can change this in the popup).
The tools are familiar. The agent starts with Playwright MCP's 25 core tools, under the same names, plus browser_ask_user and browser_resume for when it needs you. Prompts written for Playwright MCP work unchanged. More tools (page text, forms, batches, downloads, …) stay off until you allow them.
You decide how much to hand over. KITSUNE_MODE=read, draft or act limits what the agent can do. In draft mode it can fill in forms but cannot click or submit.

Get started

Install uv.
Install the browser extension in Firefox, Zen or LibreWolf.
Add Kitsune to your agent. For Claude Code:

   claude mcp add --scope user kitsune -- uvx --from kitsune-browser-mcp kitsune

Codex, Pi, OpenCode, Claude Desktop and Cursor are in Installation.

Keep the browser open and ask in plain language:

Research these three products in background tabs and compare them with links.

Leave my current tab alone.

Fill in a draft of this form. Don't submit it.

Kitsune starts its local bridge on its own. If the agent cannot connect, ask it to check the connection: the error's hint says what to fix.

Use a separate browser profile for agent work and sign in only to the accounts it needs. Ask the agent to check with you before it sends, buys or deletes anything. Nothing in Kitsune stops prompt injection, so read the security guide before using sensitive accounts.

Documentation

The full documentation is at [junyeong-nero.github.io/kitsune](https://junyeong-nero.github.io/kitsune/):

Installation: every MCP client, version pinning, upgrades
Your tabs and approvals: what the agent may do to your tabs, and how you approve
Tools, capabilities and modes: KITSUNE_CAPS, KITSUNE_PUBLISH and KITSUNE_MODE
Python API: drive the browser from your own scripts with pip install kitsune-browser
Troubleshooting · FAQ · Benchmark and comparison · API reference

Kitsune

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Values you fill in

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Web & browsersi

Common questions

Alternatives

Browser Use

Chrome DevTools MCP

MCP Server Browser

README from the maker

Kitsune

Why Kitsune?

Get started

Documentation