Neko Browser

Dedicated browser MCP server for neko-gundan agents. Headed Playwright with persistent profile, fully isolated from daily-use Chrome.

Features

• Persistent profile: Sessions survive restarts (cookies, localStorage, login state preserved)
• Headed mode: GUI visible by default for debugging and human oversight
• 23 MCP tools: Full browser automation toolkit
• PII masking: Sensitive data (credit cards, SSNs, emails) auto-masked in responses
• Process isolation: Runs its own Chromium instance with dedicated profile directory
• Custom favicon: Shigoto-neko icon injected for easy identification

Tools

Tool	Description
neko_navigate	Navigate to URL, optionally in new tab
neko_click	Click element by index or coordinates
neko_type	Type text into element (keyboard events)
neko_fill	Set text via DOM (for contentEditable)
neko_press_key	Send keyboard key (Enter, Tab, etc.)
neko_get_state	Get page URL, title, interactive elements
neko_screenshot	Capture page screenshot
neko_scroll	Scroll page up/down
neko_go_back	Navigate back in history
neko_get_html	Get HTML of page or element
neko_list_tabs	List all open tabs
neko_switch_tab	Switch to tab by ID
neko_close_tab	Close tab by ID
neko_close	Close the browser
neko_upload_file	Upload files (direct input or dialog mode)
neko_evaluate	Execute JavaScript in page context
neko_select	Select dropdown option (by value/label/index)
neko_wait_for	Wait for selector state or navigation
neko_handle_dialog	Configure alert/confirm/prompt handling
neko_hover	Hover over element (tooltips, menus)
neko_check	Check/uncheck checkbox or radio
neko_double_click	Double-click element
neko_get_attribute	Get element attribute(s)

Installation

npm install
npm run build

Configuration

Environment variables:

Variable	Default	Description
NEKO_BROWSER_PROFILE	~/.neko-browser/profile	Profile directory path
NEKO_BROWSER_HEADLESS	false	Set to true for headless mode

Usage (MCP)

Add to your Claude Code MCP settings:

{
  "mcpServers": {
    "neko-browser": {
      "command": "node",
      "args": ["dist/index.js"],
      "cwd": "/path/to/neko-browser"
    }
  }
}

License

MIT