MCP Selenium Server

Automate web browsers using Selenium WebDriver via MCP.

MCP Selenium Server

A Model Context Protocol (MCP) server for Selenium WebDriver — browser automation for AI agents.

Setup

Goose (Desktop)

Paste into your browser address bar:

goose://extension?cmd=npx&arg=-y&arg=%40angiejones%2Fmcp-selenium%40latest&id=selenium-mcp&name=Selenium%20MCP&description=automates%20browser%20interactions

Goose (CLI)

goose session --with-extension "npx -y @angiejones/mcp-selenium@latest"

Claude Code

claude mcp add selenium -- npx -y @angiejones/mcp-selenium@latest

Cursor / Windsurf / other MCP clients

{
  "mcpServers": {
    "selenium": {
      "command": "npx",
      "args": ["-y", "@angiejones/mcp-selenium@latest"]
    }
  }
}

Example Usage

Tell the AI agent of your choice:

Open Chrome, go to github.com/angiejones, and take a screenshot.

The agent will call Selenium's APIs to start_browser, navigate, and take_screenshot. No manual scripting or explicit directions needed.

Supported Browsers

Chrome, Firefox, Edge, and Safari.

Safari note: Requires macOS. Run sudo safaridriver --enable once and enable "Allow Remote Automation" in Safari → Settings → Developer. No headless mode.

Tools

start_browser

Launches a browser session.

Parameter	Type	Required	Description
browser	string	Yes	`chrome`, `firefox`, `edge`, or `safari`
options	object	No	`{ headless: boolean, arguments: string[] }`

navigate

Navigates to a URL.

Parameter	Type	Required	Description
url	string	Yes	URL to navigate to

interact

Performs a mouse action on an element.

Parameter	Type	Required	Description
action	string	Yes	`click`, `doubleclick`, `rightclick`, or `hover`
by	string	Yes	Locator strategy: `id`, `css`, `xpath`, `name`, `tag`, `class`
value	string	Yes	Value for the locator strategy
timeout	number	No	Max wait in ms (default: 10000)

send_keys

Types text into an element. Clears the field first.

Parameter	Type	Required	Description
by	string	Yes	Locator strategy
value	string	Yes	Locator value
text	string	Yes	Text to enter
timeout	number	No	Max wait in ms (default: 10000)

get_element_text

Gets the text content of an element.

Parameter	Type	Required	Description
by	string	Yes	Locator strategy
value	string	Yes	Locator value
timeout	number	No	Max wait in ms (default: 10000)

get_element_attribute

Gets an attribute value from an element.

Parameter	Type	Required	Description
by	string	Yes	Locator strategy
value	string	Yes	Locator value
attribute	string	Yes	Attribute name (e.g., `href`, `value`, `class`)
timeout	number	No	Max wait in ms (default: 10000)

press_key

Presses a keyboard key.

Parameter	Type	Required	Description
key	string	Yes	Key to press (e.g., `Enter`, `Tab`, `a`)

upload_file

Uploads a file via a file input element.

Parameter	Type	Required	Description
by	string	Yes	Locator strategy
value	string	Yes	Locator value
filePath	string	Yes	Absolute path to the file
timeout	number	No	Max wait in ms (default: 10000)

take_screenshot

Captures a screenshot of the current page.

Parameter	Type	Required	Description
outputPath	string	No	Save path. If omitted, returns base64 image data.

close_session

Closes the current browser session. No parameters.

execute_script

Executes JavaScript in the browser. Use for advanced interactions not covered by other tools (e.g., drag and drop, scrolling, reading computed styles, DOM manipulation).

Parameter	Type	Required	Description
script	string	Yes	JavaScript code to execute
args	array	No	Arguments accessible via `arguments[0]`, etc.

window

Manages browser windows and tabs.

Parameter	Type	Required	Description
action	string	Yes	`list`, `switch`, `switch_latest`, or `close`
handle	string	No	Window handle (required for `switch`)

frame

Switches focus to a frame or back to the main page.

Parameter	Type	Required	Description
action	string	Yes	`switch` or `default`
by	string	No	Locator strategy (for `switch`)
value	string	No	Locator value (for `switch`)
index	number	No	Frame index, 0-based (for `switch`)
timeout	number	No	Max wait in ms (default: 10000)

alert

Handles browser alert, confirm, or prompt dialogs.

Parameter	Type	Required	Description
action	string	Yes	`accept`, `dismiss`, `get_text`, or `send_text`
text	string	No	Text to send (required for `send_text`)
timeout	number	No	Max wait in ms (default: 5000)

add_cookie

Adds a cookie. Browser must be on a page from the cookie's domain.

Parameter	Type	Required	Description
name	string	Yes	Cookie name
value	string	Yes	Cookie value
domain	string	No	Cookie domain
path	string	No	Cookie path
secure	boolean	No	Secure flag
httpOnly	boolean	No	HTTP-only flag
expiry	number	No	Unix timestamp

get_cookies

Gets cookies. Returns all or a specific one by name.

Parameter	Type	Required	Description
name	string	No	Cookie name. Omit for all cookies.

delete_cookie

Deletes cookies. Deletes all or a specific one by name.

Parameter	Type	Required	Description
name	string	No	Cookie name. Omit to delete all.

diagnostics

Gets browser diagnostics captured via WebDriver BiDi (auto-enabled when supported).

Parameter	Type	Required	Description
type	string	Yes	`console`, `errors`, or `network`
clear	boolean	No	Clear buffer after returning (default: false)

Resources

MCP resources provide read-only data that clients can access without calling a tool.

browser-status://current

Returns the current browser session status (active session ID or "no active session").

Property	Value
MIME type	`text/plain`
Requires browser	No

accessibility://current

Returns an accessibility tree snapshot of the current page — a compact, structured JSON representation of interactive elements and text content. Much smaller than full HTML. Useful for understanding page layout and finding elements to interact with.

Property	Value
MIME type	`application/json`
Requires browser	Yes

Development

Setup

git clone https://github.com/angiejones/mcp-selenium.git
cd mcp-selenium
npm install

Run Tests

npm test

Requires Chrome + chromedriver on PATH. Tests run headless.

Install via Smithery

npx -y @smithery/cli install @angiejones/mcp-selenium --client claude

Install globally

npm install -g @angiejones/mcp-selenium
mcp-selenium

License

MIT

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