Stealth Browser Server

Standalone desktop application — real Chrome fingerprint browser + MCP automation server.

Core value: Not a lightweight Playwright/Puppeteer wrapper. Real Electron Chromium browser with navigator.webdriver = false, real window.chrome, 5 plugins, fingerprint identical to normal Chrome.

Quick Start

1. Launch the app

# From source:
npm start

# Or double-click the built executable:
# dist/ElectronStealth-1.0.0.exe (Windows portable, no install needed)

• Browser window opens, showing the status page
• TCP MCP server starts on 127.0.0.1:19999
• Window title shows connection status

2. Use with Claude Code (recommended)

Configure ~/.claude.json:

"mcpServers": {
  "electron-stealth": {
    "command": "node",
    "args": ["src/bridge.js"],
    "cwd": "<path-to-electron-stealth>"
  }
}

Restart Claude Code. Then use 32 MCP tools directly:

Open https://example.com
Screenshot
Get page HTML
Click [data-testid="submit-btn"]
Type [email protected] in input[name="email"]

3. Direct TCP access (without Claude Code)

# Run the example extraction script:
node scripts/extract_product.js

# Or write your own client connecting to 127.0.0.1:19999

---

Architecture

┌─────────────────┐     stdio      ┌──────────────┐     TCP :19999     ┌────────────────────┐
│   Claude Code   │ ←───────────→ │  bridge.js   │ ←───────────────→ │  Electron Stealth  │
│   (MCP client)  │                │  (Node.js)   │                    │  (Chromium + MCP)  │
└─────────────────┘                └──────────────┘                    └────────────────────┘
                                                                       │
                                                                       ├─ BrowserWindow (visible)
                                                                       ├─ CDP debugger (stealth injection)
                                                                       ├─ TCP MCP Server
                                                                       └─ BrowserController (32 tools)

Why not stdio direct?

On Windows, Electron GUI apps cannot reliably communicate with the parent process via stdio (ELECTRON_NO_ATTACH_CONSOLE disconnects pipes). bridge.js solves this: it runs as a pure Node.js process connected to Claude Code's stdio, then forwards to the Electron app via TCP.

---

All 32 Tools

Category	Tool	Description
Navigation	navigate	Open URL
	go_back	Navigate back
	go_forward	Navigate forward
	reload	Reload page
Interaction	click	Click by CSS selector
	click_xy	Click by coordinates
	type	Type text (optional selector focus)
	type_xy	Click at coords then type
	keypress	Key press (supports Ctrl/Alt/Shift/Meta)
	scroll	Scroll page
	mousemove	Move mouse
Reading	screenshot	Screenshot (viewport or full page) → base64 PNG
	screenshot_element	Element screenshot
	evaluate	Execute JS, return result
	get_html	Get complete HTML
	get_text	Get visible text
	get_url	Get current URL
	snapshot	Structured snapshot of interactive elements
	element_info	Detailed single-element info
Forms	select_option	Select dropdown option (value or label)
	upload_file	Upload files
	handle_dialog	Handle alert/confirm/prompt
Wait	wait	Wait for time or selector appearance
	wait_for_network	Wait for network idle
Capture	network_capture_start	Start capturing requests/responses
	network_capture_stop	Stop and return captured data
	network_get_response	Get response body for a request
Record	record_start	Start recording actions (key-value selectors)
	record_stop	Stop recording, return Flow JSON
	record_status	Check recording status
Flow	run_flow	Execute recorded/hand-written Flow, supports {{VAR}}

---

Stealth Detection

Check	Status
navigator.webdriver	false
window.chrome	Real object
navigator.plugins	5
navigator.platform	Win32
navigator.languages	Configured
Chrome PDF Plugin	Present
Permissions.query('notifications')	prompt

---

Flow Recording

# 1. Start recording
record_start

# 2. Perform actions (manual browser or MCP)
click [data-testid="login-btn"]
type [email protected] in input[name="email"]
type password123 in input[type="password"]

# 3. Stop recording, get Flow JSON
record_stop name="Login Flow"

# 4. Replay anytime
run_flow flow={...}

Recording uses key-value selector priority: data-testid > id > name > aria-label > placeholder > title > text > class > role > type. Coordinate-independent, stable across window sizes.

---

Network Capture

network_capture_start
navigate https://target-site.com
wait_for_network timeout=10000 idleTime=500
data = network_capture_stop()
# data.summary.xhrApiCalls  → API call list
# data.summary.byDomain      → Domain distribution

---

Build

npm install
npm run build:portable
# Output: dist/ElectronStealth-1.0.0.exe (~73MB, single file, portable)

On macOS/Linux, adjust the build.win.target in package.json to your platform.

---

Troubleshooting

Issue	Solution
Page shows garbled text/CSS	Confirm latest version (base64-encoded fix)
Port in use	Close all Electron Stealth windows, or kill the process
MCP tools not visible	Restart Claude Code to load MCP config
Need Playwright Chromium?	No! Electron Stealth has its own Chromium
Blocked by anti-bot?	Uses real Chrome fingerprint, usually not blocked