Is Open Claude In Chrome safe to use?

Open Claude In Chrome has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments.

How do I install Open Claude In Chrome?

Open Claude In Chrome supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.

What AI clients work with Open Claude In Chrome?

Open Claude In Chrome is compatible with claude-desktop, cursor, claude-code. It uses stdio and sse and http transport.

Is Open Claude In Chrome actively maintained?

Open Claude In Chrome is actively maintained — last commit was 24 days ago. It has 95 GitHub stars.

Open Claude In Chrome

Name: Open Claude In Chrome
Author: noemica-io

cd · by noemica-io

Claude in Chrome, reverse-engineered and open-source. No domain blocklist. Any Chromium browser. Same 18 MCP tools, same performance.

95 32.9k/wk 0 tools GitHub npm

No known CVEs

No license

Actively maintained

Last commit 24d ago

Works with most clients

Transport: stdio, sse, http

0 tools

Grade F

Edit this pageView history

Browser

Step 1

Install in your client

Config is the same across clients — only the file and path differ.

Supported in Claude Desktopstdio, sse, http · Node 18+

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "open-claude-in-chrome": {
      "args": [
        "-y",
        "cd"
      ],
      "command": "npx"
    }
  }
}

Are you the author?

Add this badge to your README to show your security score and help users find safe servers.

Embed in your READMEAbout badges →

[![MCPpedia Score](https://mcppedia.org/api/badge/open-claude-in-chrome)](https://mcppedia.org/s/open-claude-in-chrome)

Read me

What Open Claude In Chrome does

Claude in Chrome, fully open source. No domain blocklist. Any Chromium browser.

Test This Server

Run this in your terminal to verify the server starts. Then let us know if it worked — your result helps other developers.

npx -y 'cd' 2>&1 | head -1 && echo "✓ Server started successfully"

After testing, let us know if it worked:

Loading README…

Scored, not listed

Why this score

Five weighted categories — click any category to see the underlying evidence.

Score breakdown

59/100across 5 weighted dimensions

How we score →

0255075100

−41

Security

Maintenance

Efficiency

Documentation

Compatibility

Categoriesclick a row to see evidence

Security

OSV.dev

No known CVEs.

Checked cd against OSV.dev.

Community

Reviews

Be the first to review

Have you used this server?

Share your experience — it helps other developers decide.

How easy was setup?Did it work reliably?How was the documentation?

Frequently Asked Questions

Is Open Claude In Chrome safe to use?: Open Claude In Chrome has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments.
How do I install Open Claude In Chrome?: Open Claude In Chrome supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.
What AI clients work with Open Claude In Chrome?: Open Claude In Chrome is compatible with claude-desktop, cursor, claude-code. It uses stdio and sse and http transport.
Is Open Claude In Chrome actively maintained?: Open Claude In Chrome is actively maintained — last commit was 24 days ago. It has 95 GitHub stars.

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Community

Discussion

Start a conversation

Ask a question, share a tip, or report an issue.

Has anyone used this with Cursor?How do you handle auth?Any alternatives?

Edit this pageView history

Browser

Step 1

Install in your client

Config is the same across clients — only the file and path differ.

Supported in Claude Desktopstdio, sse, http · Node 18+

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "open-claude-in-chrome": {
      "args": [
        "-y",
        "cd"
      ],
      "command": "npx"
    }
  }
}

Are you the author?

Add this badge to your README to show your security score and help users find safe servers.

Embed in your READMEAbout badges →

[![MCPpedia Score](https://mcppedia.org/api/badge/open-claude-in-chrome)](https://mcppedia.org/s/open-claude-in-chrome)

Read me

What Open Claude In Chrome does

Claude in Chrome, fully open source. No domain blocklist. Any Chromium browser.

Test This Server

Run this in your terminal to verify the server starts. Then let us know if it worked — your result helps other developers.

npx -y 'cd' 2>&1 | head -1 && echo "✓ Server started successfully"

After testing, let us know if it worked:

README

Open Claude in Chrome

Official Claude in Chrome gives you 58 blocked domains and two browsers.
Open Claude in Chrome gives you the whole web.
_{Clean-room reimplementation of Anthropic's browser extension. No blocklist. Any Chromium browser. 100% feature & performance parity.}
_{by noemica}

What's different · Install · Architecture · Demo · How I built it

_{Watch Claude navigate Tinder, Reddit, and Robinhood — sites the official extension can't reach.}

The official Claude in Chrome extension gives Claude Code full browser automation — as long as you stay within Anthropic's allowlist of "safe" sites. Open Claude in Chrome is a clean-room reimplementation that strips the restrictions while keeping all 18 MCP tools and matching the official extension's performance.

What's Different

	Claude in Chrome	Open Claude in Chrome
Domain blocklist	58 blocked domains across 11 categories	No blocklist. Navigate anywhere.
Browser support	Chrome and Edge only	Any Chromium browser (Chrome, Edge, Brave, Arc, Opera, Vivaldi, etc.)
Source code	Closed source	Open source (MIT)
Tools	18 MCP tools	Same 18 MCP tools
Performance	Baseline	Identical

Blocked Domains in the Official Extension

Category	Blocked Sites
Banking	Chase, BofA, Wells Fargo, Citibank
Investing/Brokerage	Schwab, Fidelity, Robinhood, E-Trade, Wealthfront, Betterment
Payments/Transfers	PayPal, Venmo, Cash App, Zelle, Stripe, Square, Wise, Western Union, MoneyGram, Adyen, Checkout.com
BNPL	Klarna, Affirm, Afterpay
Neobanks/Fintech	SoFi, Chime, Mercury, Brex, Ramp
Crypto	Coinbase, Binance, Kraken, MetaMask
Gambling	DraftKings, FanDuel, Bet365, Bovada, PokerStars, BetMGM, Caesars
Dating	Tinder, Bumble, Hinge, Match, OKCupid
Adult	Pornhub, XVideos, XNXX
News/Media	NYT, WSJ, Barron's, MarketWatch, Bloomberg, Reuters, Economist, Wired, Vogue
Social Media	Reddit

Open Claude in Chrome has none of these restrictions.

Architecture

Claude Code <--stdio MCP--> mcp-server.js <--TCP--> native-host.js <--native messaging--> Extension <--> Browser

Three components:

Extension — Manifest V3 with CDP-based browser automation (all 18 tools)
MCP Server — Node.js process started by Claude Code, exposes tools via MCP
Native Messaging Host — Bridge between the MCP server and the extension

Installation

Prerequisites

Node.js v18+
Any Chromium browser (Chrome, Edge, Brave, Arc, Opera, Vivaldi, etc.)
Claude Code v2.0.73+

Step 1: Install dependencies

cd host
npm install
cd ..

Step 2: Load the extension

Go to chrome://extensions (or brave://extensions / edge://extensions)
Enable Developer mode
Click Load unpacked and select the extension/ directory
Copy the extension ID shown under the extension name

Step 3: Register native messaging

./install.sh <your-extension-id>

If you use multiple browsers, pass all IDs:

./install.sh <chrome-id> <brave-id> <arc-id>

Step 4: Restart your browser

Clo

... View full README on GitHub

Loading README…

Scored, not listed

Why this score

Five weighted categories — click any category to see the underlying evidence.

Score breakdown

59/100across 5 weighted dimensions

How we score →

0255075100

−41

Security

Maintenance

Efficiency

Documentation

Compatibility

Categoriesclick a row to see evidence

Security

OSV.dev

No known CVEs.

Checked cd against OSV.dev.

Community

Reviews

Be the first to review

Have you used this server?

Share your experience — it helps other developers decide.

How easy was setup?Did it work reliably?How was the documentation?

Frequently Asked Questions

Is Open Claude In Chrome safe to use?: Open Claude In Chrome has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments.
How do I install Open Claude In Chrome?: Open Claude In Chrome supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.
What AI clients work with Open Claude In Chrome?: Open Claude In Chrome is compatible with claude-desktop, cursor, claude-code. It uses stdio and sse and http transport.
Is Open Claude In Chrome actively maintained?: Open Claude In Chrome is actively maintained — last commit was 24 days ago. It has 95 GitHub stars.