This is page 1 of 2. Use http://codebase.md/microsoft/playwright-mcp?page={x} to view the full context.
# Directory Structure
```
├── .github
│ └── workflows
│ ├── ci.yml
│ └── publish.yml
├── .gitignore
├── .npmignore
├── cli.js
├── config.d.ts
├── CONTRIBUTING.md
├── Dockerfile
├── extension
│ ├── icons
│ │ ├── icon-128.png
│ │ ├── icon-16.png
│ │ ├── icon-32.png
│ │ └── icon-48.png
│ ├── manifest.json
│ ├── package-lock.json
│ ├── package.json
│ ├── playwright.config.ts
│ ├── README.md
│ ├── src
│ │ ├── background.ts
│ │ ├── relayConnection.ts
│ │ └── ui
│ │ ├── authToken.css
│ │ ├── authToken.tsx
│ │ ├── colors.css
│ │ ├── connect.css
│ │ ├── connect.html
│ │ ├── connect.tsx
│ │ ├── copyToClipboard.css
│ │ ├── copyToClipboard.tsx
│ │ ├── icons.css
│ │ ├── icons.tsx
│ │ ├── status.html
│ │ ├── status.tsx
│ │ ├── tabItem.tsx
│ │ └── tsconfig.json
│ ├── tests
│ │ └── extension.spec.ts
│ ├── tsconfig.json
│ ├── tsconfig.ui.json
│ ├── vite.config.mts
│ └── vite.sw.config.mts
├── index.d.ts
├── index.js
├── LICENSE
├── package-lock.json
├── package.json
├── playwright.config.ts
├── README.md
├── SECURITY.md
├── src
│ └── README.md
├── tests
│ ├── capabilities.spec.ts
│ ├── click.spec.ts
│ ├── core.spec.ts
│ ├── fixtures.ts
│ ├── library.spec.ts
│ └── testserver
│ ├── cert.pem
│ ├── index.ts
│ ├── key.pem
│ └── san.cnf
└── update-readme.js
```
# Files
--------------------------------------------------------------------------------
/.npmignore:
--------------------------------------------------------------------------------
```
**/*
README.md
LICENSE
!cli.js
!index.*
!config.d.ts
```
--------------------------------------------------------------------------------
/.gitignore:
--------------------------------------------------------------------------------
```
lib/
dist/
node_modules/
test-results/
playwright-report/
.vscode/mcp.json
.idea
.DS_Store
.env
sessions/
```
--------------------------------------------------------------------------------
/src/README.md:
--------------------------------------------------------------------------------
```markdown
# Where is the source?
Playwright MCP source code is located in the Playwright monorepo. Please refer to the contributor's guide in [CONTRIBUTING.md](../CONTRIBUTING.md) for more details.
```
--------------------------------------------------------------------------------
/extension/README.md:
--------------------------------------------------------------------------------
```markdown
# Playwright MCP Chrome Extension
## Introduction
The Playwright MCP Chrome Extension allows you to connect to pages in your existing browser and leverage the state of your default user profile. This means the AI assistant can interact with websites where you're already logged in, using your existing cookies, sessions, and browser state, providing a seamless experience without requiring separate authentication or setup.
## Prerequisites
- Chrome/Edge/Chromium browser
## Installation Steps
### Download the Extension
Download the latest Chrome extension from GitHub:
- **Download link**: https://github.com/microsoft/playwright-mcp/releases
### Load Chrome Extension
1. Open Chrome and navigate to `chrome://extensions/`
2. Enable "Developer mode" (toggle in the top right corner)
3. Click "Load unpacked" and select the extension directory
### Configure Playwright MCP server
Configure Playwright MCP server to connect to the browser using the extension by passing the `--extension` option when running the MCP server:
```json
{
"mcpServers": {
"playwright-extension": {
"command": "npx",
"args": [
"@playwright/mcp@latest",
"--extension"
]
}
}
}
```
## Usage
### Browser Tab Selection
When the LLM interacts with the browser for the first time, it will load a page where you can select which browser tab the LLM will connect to. This allows you to control which specific page the AI assistant will interact with during the session.
```
--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
```markdown
## Playwright MCP
A Model Context Protocol (MCP) server that provides browser automation capabilities using [Playwright](https://playwright.dev). This server enables LLMs to interact with web pages through structured accessibility snapshots, bypassing the need for screenshots or visually-tuned models.
### Key Features
- **Fast and lightweight**. Uses Playwright's accessibility tree, not pixel-based input.
- **LLM-friendly**. No vision models needed, operates purely on structured data.
- **Deterministic tool application**. Avoids ambiguity common with screenshot-based approaches.
### Requirements
- Node.js 18 or newer
- VS Code, Cursor, Windsurf, Claude Desktop, Goose or any other MCP client
<!--
// Generate using:
node utils/generate-links.js
-->
### Getting started
First, install the Playwright MCP server with your client.
**Standard config** works in most of the tools:
```js
{
"mcpServers": {
"playwright": {
"command": "npx",
"args": [
"@playwright/mcp@latest"
]
}
}
}
```
[<img src="https://img.shields.io/badge/VS_Code-VS_Code?style=flat-square&label=Install%20Server&color=0098FF" alt="Install in VS Code">](https://insiders.vscode.dev/redirect?url=vscode%3Amcp%2Finstall%3F%257B%2522name%2522%253A%2522playwright%2522%252C%2522command%2522%253A%2522npx%2522%252C%2522args%2522%253A%255B%2522%2540playwright%252Fmcp%2540latest%2522%255D%257D) [<img alt="Install in VS Code Insiders" src="https://img.shields.io/badge/VS_Code_Insiders-VS_Code_Insiders?style=flat-square&label=Install%20Server&color=24bfa5">](https://insiders.vscode.dev/redirect?url=vscode-insiders%3Amcp%2Finstall%3F%257B%2522name%2522%253A%2522playwright%2522%252C%2522command%2522%253A%2522npx%2522%252C%2522args%2522%253A%255B%2522%2540playwright%252Fmcp%2540latest%2522%255D%257D)
<details>
<summary>Amp</summary>
Add via the Amp VS Code extension settings screen or by updating your settings.json file:
```json
"amp.mcpServers": {
"playwright": {
"command": "npx",
"args": [
"@playwright/mcp@latest"
]
}
}
```
**Amp CLI Setup:**
Add via the `amp mcp add`command below
```bash
amp mcp add playwright -- npx @playwright/mcp@latest
```
</details>
<details>
<summary>Claude Code</summary>
Use the Claude Code CLI to add the Playwright MCP server:
```bash
claude mcp add playwright npx @playwright/mcp@latest
```
</details>
<details>
<summary>Claude Desktop</summary>
Follow the MCP install [guide](https://modelcontextprotocol.io/quickstart/user), use the standard config above.
</details>
<details>
<summary>Codex</summary>
Use the Codex CLI to add the Playwright MCP server:
```bash
codex mcp add playwright npx "@playwright/mcp@latest"
```
Alternatively, create or edit the configuration file `~/.codex/config.toml` and add:
```toml
[mcp_servers.playwright]
command = "npx"
args = ["@playwright/mcp@latest"]
```
For more information, see the [Codex MCP documentation](https://github.com/openai/codex/blob/main/codex-rs/config.md#mcp_servers).
</details>
<details>
<summary>Cursor</summary>
#### Click the button to install:
[<img src="https://cursor.com/deeplink/mcp-install-dark.svg" alt="Install in Cursor">](https://cursor.com/en/install-mcp?name=Playwright&config=eyJjb21tYW5kIjoibnB4IEBwbGF5d3JpZ2h0L21jcEBsYXRlc3QifQ%3D%3D)
#### Or install manually:
Go to `Cursor Settings` -> `MCP` -> `Add new MCP Server`. Name to your liking, use `command` type with the command `npx @playwright/mcp@latest`. You can also verify config or add command like arguments via clicking `Edit`.
</details>
<details>
<summary>Factory</summary>
Use the Factory CLI to add the Playwright MCP server:
```bash
droid mcp add playwright "npx @playwright/mcp@latest"
```
Alternatively, type `/mcp` within Factory droid to open an interactive UI for managing MCP servers.
For more information, see the [Factory MCP documentation](https://docs.factory.ai/cli/configuration/mcp).
</details>
<details>
<summary>Gemini CLI</summary>
Follow the MCP install [guide](https://github.com/google-gemini/gemini-cli/blob/main/docs/tools/mcp-server.md#configure-the-mcp-server-in-settingsjson), use the standard config above.
</details>
<details>
<summary>Goose</summary>
#### Click the button to install:
[](https://block.github.io/goose/extension?cmd=npx&arg=%40playwright%2Fmcp%40latest&id=playwright&name=Playwright&description=Interact%20with%20web%20pages%20through%20structured%20accessibility%20snapshots%20using%20Playwright)
#### Or install manually:
Go to `Advanced settings` -> `Extensions` -> `Add custom extension`. Name to your liking, use type `STDIO`, and set the `command` to `npx @playwright/mcp`. Click "Add Extension".
</details>
<details>
<summary>Kiro</summary>
Follow the MCP Servers [documentation](https://kiro.dev/docs/mcp/). For example in `.kiro/settings/mcp.json`:
```json
{
"mcpServers": {
"playwright": {
"command": "npx",
"args": [
"@playwright/mcp@latest"
]
}
}
}
```
</details>
<details>
<summary>LM Studio</summary>
#### Click the button to install:
[](https://lmstudio.ai/install-mcp?name=playwright&config=eyJjb21tYW5kIjoibnB4IiwiYXJncyI6WyJAcGxheXdyaWdodC9tY3BAbGF0ZXN0Il19)
#### Or install manually:
Go to `Program` in the right sidebar -> `Install` -> `Edit mcp.json`. Use the standard config above.
</details>
<details>
<summary>opencode</summary>
Follow the MCP Servers [documentation](https://opencode.ai/docs/mcp-servers/). For example in `~/.config/opencode/opencode.json`:
```json
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"playwright": {
"type": "local",
"command": [
"npx",
"@playwright/mcp@latest"
],
"enabled": true
}
}
}
```
</details>
<details>
<summary>Qodo Gen</summary>
Open [Qodo Gen](https://docs.qodo.ai/qodo-documentation/qodo-gen) chat panel in VSCode or IntelliJ → Connect more tools → + Add new MCP → Paste the standard config above.
Click <code>Save</code>.
</details>
<details>
<summary>VS Code</summary>
#### Click the button to install:
[<img src="https://img.shields.io/badge/VS_Code-VS_Code?style=flat-square&label=Install%20Server&color=0098FF" alt="Install in VS Code">](https://insiders.vscode.dev/redirect?url=vscode%3Amcp%2Finstall%3F%257B%2522name%2522%253A%2522playwright%2522%252C%2522command%2522%253A%2522npx%2522%252C%2522args%2522%253A%255B%2522%2540playwright%252Fmcp%2540latest%2522%255D%257D) [<img alt="Install in VS Code Insiders" src="https://img.shields.io/badge/VS_Code_Insiders-VS_Code_Insiders?style=flat-square&label=Install%20Server&color=24bfa5">](https://insiders.vscode.dev/redirect?url=vscode-insiders%3Amcp%2Finstall%3F%257B%2522name%2522%253A%2522playwright%2522%252C%2522command%2522%253A%2522npx%2522%252C%2522args%2522%253A%255B%2522%2540playwright%252Fmcp%2540latest%2522%255D%257D)
#### Or install manually:
Follow the MCP install [guide](https://code.visualstudio.com/docs/copilot/chat/mcp-servers#_add-an-mcp-server), use the standard config above. You can also install the Playwright MCP server using the VS Code CLI:
```bash
# For VS Code
code --add-mcp '{"name":"playwright","command":"npx","args":["@playwright/mcp@latest"]}'
```
After installation, the Playwright MCP server will be available for use with your GitHub Copilot agent in VS Code.
</details>
<details>
<summary>Warp</summary>
Go to `Settings` -> `AI` -> `Manage MCP Servers` -> `+ Add` to [add an MCP Server](https://docs.warp.dev/knowledge-and-collaboration/mcp#adding-an-mcp-server). Use the standard config above.
Alternatively, use the slash command `/add-mcp` in the Warp prompt and paste the standard config from above:
```js
{
"mcpServers": {
"playwright": {
"command": "npx",
"args": [
"@playwright/mcp@latest"
]
}
}
}
```
</details>
<details>
<summary>Windsurf</summary>
Follow Windsurf MCP [documentation](https://docs.windsurf.com/windsurf/cascade/mcp). Use the standard config above.
</details>
### Configuration
Playwright MCP server supports following arguments. They can be provided in the JSON configuration above, as a part of the `"args"` list:
<!--- Options generated by update-readme.js -->
```
> npx @playwright/mcp@latest --help
--allowed-hosts <hosts...> comma-separated list of hosts this
server is allowed to serve from.
Defaults to the host the server is bound
to. Pass '*' to disable the host check.
--allowed-origins <origins> semicolon-separated list of origins to
allow the browser to request. Default is
to allow all.
--blocked-origins <origins> semicolon-separated list of origins to
block the browser from requesting.
Blocklist is evaluated before allowlist.
If used without the allowlist, requests
not matching the blocklist are still
allowed.
--block-service-workers block service workers
--browser <browser> browser or chrome channel to use,
possible values: chrome, firefox,
webkit, msedge.
--caps <caps> comma-separated list of additional
capabilities to enable, possible values:
vision, pdf.
--cdp-endpoint <endpoint> CDP endpoint to connect to.
--cdp-header <headers...> CDP headers to send with the connect
request, multiple can be specified.
--config <path> path to the configuration file.
--device <device> device to emulate, for example: "iPhone
15"
--executable-path <path> path to the browser executable.
--extension Connect to a running browser instance
(Edge/Chrome only). Requires the
"Playwright MCP Bridge" browser
extension to be installed.
--grant-permissions <permissions...> List of permissions to grant to the
browser context, for example
"geolocation", "clipboard-read",
"clipboard-write".
--headless run browser in headless mode, headed by
default
--host <host> host to bind server to. Default is
localhost. Use 0.0.0.0 to bind to all
interfaces.
--ignore-https-errors ignore https errors
--init-script <path...> path to JavaScript file to add as an
initialization script. The script will
be evaluated in every page before any of
the page's scripts. Can be specified
multiple times.
--isolated keep the browser profile in memory, do
not save it to disk.
--image-responses <mode> whether to send image responses to the
client. Can be "allow" or "omit",
Defaults to "allow".
--no-sandbox disable the sandbox for all process
types that are normally sandboxed.
--output-dir <path> path to the directory for output files.
--port <port> port to listen on for SSE transport.
--proxy-bypass <bypass> comma-separated domains to bypass proxy,
for example
".com,chromium.org,.domain.com"
--proxy-server <proxy> specify proxy server, for example
"http://myproxy:3128" or
"socks5://myproxy:8080"
--save-session Whether to save the Playwright MCP
session into the output directory.
--save-trace Whether to save the Playwright Trace of
the session into the output directory.
--save-video <size> Whether to save the video of the session
into the output directory. For example
"--save-video=800x600"
--secrets <path> path to a file containing secrets in the
dotenv format
--shared-browser-context reuse the same browser context between
all connected HTTP clients.
--storage-state <path> path to the storage state file for
isolated sessions.
--test-id-attribute <attribute> specify the attribute to use for test
ids, defaults to "data-testid"
--timeout-action <timeout> specify action timeout in milliseconds,
defaults to 5000ms
--timeout-navigation <timeout> specify navigation timeout in
milliseconds, defaults to 60000ms
--user-agent <ua string> specify user agent string
--user-data-dir <path> path to the user data directory. If not
specified, a temporary directory will be
created.
--viewport-size <size> specify browser viewport size in pixels,
for example "1280x720"
```
<!--- End of options generated section -->
### User profile
You can run Playwright MCP with persistent profile like a regular browser (default), in isolated contexts for testing sessions, or connect to your existing browser using the browser extension.
**Persistent profile**
All the logged in information will be stored in the persistent profile, you can delete it between sessions if you'd like to clear the offline state.
Persistent profile is located at the following locations and you can override it with the `--user-data-dir` argument.
```bash
# Windows
%USERPROFILE%\AppData\Local\ms-playwright\mcp-{channel}-profile
# macOS
- ~/Library/Caches/ms-playwright/mcp-{channel}-profile
# Linux
- ~/.cache/ms-playwright/mcp-{channel}-profile
```
**Isolated**
In the isolated mode, each session is started in the isolated profile. Every time you ask MCP to close the browser,
the session is closed and all the storage state for this session is lost. You can provide initial storage state
to the browser via the config's `contextOptions` or via the `--storage-state` argument. Learn more about the storage
state [here](https://playwright.dev/docs/auth).
```js
{
"mcpServers": {
"playwright": {
"command": "npx",
"args": [
"@playwright/mcp@latest",
"--isolated",
"--storage-state={path/to/storage.json}"
]
}
}
}
```
**Browser Extension**
The Playwright MCP Chrome Extension allows you to connect to existing browser tabs and leverage your logged-in sessions and browser state. See [extension/README.md](extension/README.md) for installation and setup instructions.
### Configuration file
The Playwright MCP server can be configured using a JSON configuration file. You can specify the configuration file
using the `--config` command line option:
```bash
npx @playwright/mcp@latest --config path/to/config.json
```
<details>
<summary>Configuration file schema</summary>
```typescript
{
// Browser configuration
browser?: {
// Browser type to use (chromium, firefox, or webkit)
browserName?: 'chromium' | 'firefox' | 'webkit';
// Keep the browser profile in memory, do not save it to disk.
isolated?: boolean;
// Path to user data directory for browser profile persistence
userDataDir?: string;
// Browser launch options (see Playwright docs)
// @see https://playwright.dev/docs/api/class-browsertype#browser-type-launch
launchOptions?: {
channel?: string; // Browser channel (e.g. 'chrome')
headless?: boolean; // Run in headless mode
executablePath?: string; // Path to browser executable
// ... other Playwright launch options
};
// Browser context options
// @see https://playwright.dev/docs/api/class-browser#browser-new-context
contextOptions?: {
viewport?: { width: number, height: number };
// ... other Playwright context options
};
// CDP endpoint for connecting to existing browser
cdpEndpoint?: string;
// Remote Playwright server endpoint
remoteEndpoint?: string;
},
// Server configuration
server?: {
port?: number; // Port to listen on
host?: string; // Host to bind to (default: localhost)
},
// List of additional capabilities
capabilities?: Array<
'tabs' | // Tab management
'install' | // Browser installation
'pdf' | // PDF generation
'vision' | // Coordinate-based interactions
>;
// Directory for output files
outputDir?: string;
// Network configuration
network?: {
// List of origins to allow the browser to request. Default is to allow all. Origins matching both `allowedOrigins` and `blockedOrigins` will be blocked.
allowedOrigins?: string[];
// List of origins to block the browser to request. Origins matching both `allowedOrigins` and `blockedOrigins` will be blocked.
blockedOrigins?: string[];
};
/**
* Whether to send image responses to the client. Can be "allow" or "omit".
* Defaults to "allow".
*/
imageResponses?: 'allow' | 'omit';
}
```
</details>
### Standalone MCP server
When running headed browser on system w/o display or from worker processes of the IDEs,
run the MCP server from environment with the DISPLAY and pass the `--port` flag to enable HTTP transport.
```bash
npx @playwright/mcp@latest --port 8931
```
And then in MCP client config, set the `url` to the HTTP endpoint:
```js
{
"mcpServers": {
"playwright": {
"url": "http://localhost:8931/mcp"
}
}
}
```
<details>
<summary><b>Docker</b></summary>
**NOTE:** The Docker implementation only supports headless chromium at the moment.
```js
{
"mcpServers": {
"playwright": {
"command": "docker",
"args": ["run", "-i", "--rm", "--init", "--pull=always", "mcr.microsoft.com/playwright/mcp"]
}
}
}
```
Or If you prefer to run the container as a long-lived service instead of letting the MCP client spawn it, use:
```
docker run -d -i --rm --init --pull=always \
--entrypoint node \
--name playwright \
-p 8931:8931 \
mcr.microsoft.com/playwright/mcp \
cli.js --headless --browser chromium --no-sandbox --port 8931
```
The server will listen on host port **8931** and can be reached by any MCP client.
You can build the Docker image yourself.
```
docker build -t mcr.microsoft.com/playwright/mcp .
```
</details>
<details>
<summary><b>Programmatic usage</b></summary>
```js
import http from 'http';
import { createConnection } from '@playwright/mcp';
import { SSEServerTransport } from '@modelcontextprotocol/sdk/server/sse.js';
http.createServer(async (req, res) => {
// ...
// Creates a headless Playwright MCP server with SSE transport
const connection = await createConnection({ browser: { launchOptions: { headless: true } } });
const transport = new SSEServerTransport('/messages', res);
await connection.connect(transport);
// ...
});
```
</details>
### Tools
<!--- Tools generated by update-readme.js -->
<details>
<summary><b>Core automation</b></summary>
<!-- NOTE: This has been generated via update-readme.js -->
- **browser_click**
- Title: Click
- Description: Perform click on a web page
- Parameters:
- `element` (string): Human-readable element description used to obtain permission to interact with the element
- `ref` (string): Exact target element reference from the page snapshot
- `doubleClick` (boolean, optional): Whether to perform a double click instead of a single click
- `button` (string, optional): Button to click, defaults to left
- `modifiers` (array, optional): Modifier keys to press
- Read-only: **false**
<!-- NOTE: This has been generated via update-readme.js -->
- **browser_close**
- Title: Close browser
- Description: Close the page
- Parameters: None
- Read-only: **false**
<!-- NOTE: This has been generated via update-readme.js -->
- **browser_console_messages**
- Title: Get console messages
- Description: Returns all console messages
- Parameters:
- `onlyErrors` (boolean, optional): Only return error messages
- Read-only: **true**
<!-- NOTE: This has been generated via update-readme.js -->
- **browser_drag**
- Title: Drag mouse
- Description: Perform drag and drop between two elements
- Parameters:
- `startElement` (string): Human-readable source element description used to obtain the permission to interact with the element
- `startRef` (string): Exact source element reference from the page snapshot
- `endElement` (string): Human-readable target element description used to obtain the permission to interact with the element
- `endRef` (string): Exact target element reference from the page snapshot
- Read-only: **false**
<!-- NOTE: This has been generated via update-readme.js -->
- **browser_evaluate**
- Title: Evaluate JavaScript
- Description: Evaluate JavaScript expression on page or element
- Parameters:
- `function` (string): () => { /* code */ } or (element) => { /* code */ } when element is provided
- `element` (string, optional): Human-readable element description used to obtain permission to interact with the element
- `ref` (string, optional): Exact target element reference from the page snapshot
- Read-only: **false**
<!-- NOTE: This has been generated via update-readme.js -->
- **browser_file_upload**
- Title: Upload files
- Description: Upload one or multiple files
- Parameters:
- `paths` (array, optional): The absolute paths to the files to upload. Can be single file or multiple files. If omitted, file chooser is cancelled.
- Read-only: **false**
<!-- NOTE: This has been generated via update-readme.js -->
- **browser_fill_form**
- Title: Fill form
- Description: Fill multiple form fields
- Parameters:
- `fields` (array): Fields to fill in
- Read-only: **false**
<!-- NOTE: This has been generated via update-readme.js -->
- **browser_handle_dialog**
- Title: Handle a dialog
- Description: Handle a dialog
- Parameters:
- `accept` (boolean): Whether to accept the dialog.
- `promptText` (string, optional): The text of the prompt in case of a prompt dialog.
- Read-only: **false**
<!-- NOTE: This has been generated via update-readme.js -->
- **browser_hover**
- Title: Hover mouse
- Description: Hover over element on page
- Parameters:
- `element` (string): Human-readable element description used to obtain permission to interact with the element
- `ref` (string): Exact target element reference from the page snapshot
- Read-only: **false**
<!-- NOTE: This has been generated via update-readme.js -->
- **browser_navigate**
- Title: Navigate to a URL
- Description: Navigate to a URL
- Parameters:
- `url` (string): The URL to navigate to
- Read-only: **false**
<!-- NOTE: This has been generated via update-readme.js -->
- **browser_navigate_back**
- Title: Go back
- Description: Go back to the previous page
- Parameters: None
- Read-only: **false**
<!-- NOTE: This has been generated via update-readme.js -->
- **browser_network_requests**
- Title: List network requests
- Description: Returns all network requests since loading the page
- Parameters: None
- Read-only: **true**
<!-- NOTE: This has been generated via update-readme.js -->
- **browser_press_key**
- Title: Press a key
- Description: Press a key on the keyboard
- Parameters:
- `key` (string): Name of the key to press or a character to generate, such as `ArrowLeft` or `a`
- Read-only: **false**
<!-- NOTE: This has been generated via update-readme.js -->
- **browser_resize**
- Title: Resize browser window
- Description: Resize the browser window
- Parameters:
- `width` (number): Width of the browser window
- `height` (number): Height of the browser window
- Read-only: **false**
<!-- NOTE: This has been generated via update-readme.js -->
- **browser_select_option**
- Title: Select option
- Description: Select an option in a dropdown
- Parameters:
- `element` (string): Human-readable element description used to obtain permission to interact with the element
- `ref` (string): Exact target element reference from the page snapshot
- `values` (array): Array of values to select in the dropdown. This can be a single value or multiple values.
- Read-only: **false**
<!-- NOTE: This has been generated via update-readme.js -->
- **browser_snapshot**
- Title: Page snapshot
- Description: Capture accessibility snapshot of the current page, this is better than screenshot
- Parameters: None
- Read-only: **true**
<!-- NOTE: This has been generated via update-readme.js -->
- **browser_take_screenshot**
- Title: Take a screenshot
- Description: Take a screenshot of the current page. You can't perform actions based on the screenshot, use browser_snapshot for actions.
- Parameters:
- `type` (string, optional): Image format for the screenshot. Default is png.
- `filename` (string, optional): File name to save the screenshot to. Defaults to `page-{timestamp}.{png|jpeg}` if not specified. Prefer relative file names to stay within the output directory.
- `element` (string, optional): Human-readable element description used to obtain permission to screenshot the element. If not provided, the screenshot will be taken of viewport. If element is provided, ref must be provided too.
- `ref` (string, optional): Exact target element reference from the page snapshot. If not provided, the screenshot will be taken of viewport. If ref is provided, element must be provided too.
- `fullPage` (boolean, optional): When true, takes a screenshot of the full scrollable page, instead of the currently visible viewport. Cannot be used with element screenshots.
- Read-only: **true**
<!-- NOTE: This has been generated via update-readme.js -->
- **browser_type**
- Title: Type text
- Description: Type text into editable element
- Parameters:
- `element` (string): Human-readable element description used to obtain permission to interact with the element
- `ref` (string): Exact target element reference from the page snapshot
- `text` (string): Text to type into the element
- `submit` (boolean, optional): Whether to submit entered text (press Enter after)
- `slowly` (boolean, optional): Whether to type one character at a time. Useful for triggering key handlers in the page. By default entire text is filled in at once.
- Read-only: **false**
<!-- NOTE: This has been generated via update-readme.js -->
- **browser_wait_for**
- Title: Wait for
- Description: Wait for text to appear or disappear or a specified time to pass
- Parameters:
- `time` (number, optional): The time to wait in seconds
- `text` (string, optional): The text to wait for
- `textGone` (string, optional): The text to wait for to disappear
- Read-only: **false**
</details>
<details>
<summary><b>Tab management</b></summary>
<!-- NOTE: This has been generated via update-readme.js -->
- **browser_tabs**
- Title: Manage tabs
- Description: List, create, close, or select a browser tab.
- Parameters:
- `action` (string): Operation to perform
- `index` (number, optional): Tab index, used for close/select. If omitted for close, current tab is closed.
- Read-only: **false**
</details>
<details>
<summary><b>Browser installation</b></summary>
<!-- NOTE: This has been generated via update-readme.js -->
- **browser_install**
- Title: Install the browser specified in the config
- Description: Install the browser specified in the config. Call this if you get an error about the browser not being installed.
- Parameters: None
- Read-only: **false**
</details>
<details>
<summary><b>Coordinate-based (opt-in via --caps=vision)</b></summary>
<!-- NOTE: This has been generated via update-readme.js -->
- **browser_mouse_click_xy**
- Title: Click
- Description: Click left mouse button at a given position
- Parameters:
- `element` (string): Human-readable element description used to obtain permission to interact with the element
- `x` (number): X coordinate
- `y` (number): Y coordinate
- Read-only: **false**
<!-- NOTE: This has been generated via update-readme.js -->
- **browser_mouse_drag_xy**
- Title: Drag mouse
- Description: Drag left mouse button to a given position
- Parameters:
- `element` (string): Human-readable element description used to obtain permission to interact with the element
- `startX` (number): Start X coordinate
- `startY` (number): Start Y coordinate
- `endX` (number): End X coordinate
- `endY` (number): End Y coordinate
- Read-only: **false**
<!-- NOTE: This has been generated via update-readme.js -->
- **browser_mouse_move_xy**
- Title: Move mouse
- Description: Move mouse to a given position
- Parameters:
- `element` (string): Human-readable element description used to obtain permission to interact with the element
- `x` (number): X coordinate
- `y` (number): Y coordinate
- Read-only: **false**
</details>
<details>
<summary><b>PDF generation (opt-in via --caps=pdf)</b></summary>
<!-- NOTE: This has been generated via update-readme.js -->
- **browser_pdf_save**
- Title: Save as PDF
- Description: Save page as PDF
- Parameters:
- `filename` (string, optional): File name to save the pdf to. Defaults to `page-{timestamp}.pdf` if not specified. Prefer relative file names to stay within the output directory.
- Read-only: **true**
</details>
<details>
<summary><b>Test assertions (opt-in via --caps=testing)</b></summary>
<!-- NOTE: This has been generated via update-readme.js -->
- **browser_generate_locator**
- Title: Create locator for element
- Description: Generate locator for the given element to use in tests
- Parameters:
- `element` (string): Human-readable element description used to obtain permission to interact with the element
- `ref` (string): Exact target element reference from the page snapshot
- Read-only: **true**
<!-- NOTE: This has been generated via update-readme.js -->
- **browser_verify_element_visible**
- Title: Verify element visible
- Description: Verify element is visible on the page
- Parameters:
- `role` (string): ROLE of the element. Can be found in the snapshot like this: `- {ROLE} "Accessible Name":`
- `accessibleName` (string): ACCESSIBLE_NAME of the element. Can be found in the snapshot like this: `- role "{ACCESSIBLE_NAME}"`
- Read-only: **false**
<!-- NOTE: This has been generated via update-readme.js -->
- **browser_verify_list_visible**
- Title: Verify list visible
- Description: Verify list is visible on the page
- Parameters:
- `element` (string): Human-readable list description
- `ref` (string): Exact target element reference that points to the list
- `items` (array): Items to verify
- Read-only: **false**
<!-- NOTE: This has been generated via update-readme.js -->
- **browser_verify_text_visible**
- Title: Verify text visible
- Description: Verify text is visible on the page. Prefer browser_verify_element_visible if possible.
- Parameters:
- `text` (string): TEXT to verify. Can be found in the snapshot like this: `- role "Accessible Name": {TEXT}` or like this: `- text: {TEXT}`
- Read-only: **false**
<!-- NOTE: This has been generated via update-readme.js -->
- **browser_verify_value**
- Title: Verify value
- Description: Verify element value
- Parameters:
- `type` (string): Type of the element
- `element` (string): Human-readable element description
- `ref` (string): Exact target element reference that points to the element
- `value` (string): Value to verify. For checkbox, use "true" or "false".
- Read-only: **false**
</details>
<details>
<summary><b>Tracing (opt-in via --caps=tracing)</b></summary>
<!-- NOTE: This has been generated via update-readme.js -->
- **browser_start_tracing**
- Title: Start tracing
- Description: Start trace recording
- Parameters: None
- Read-only: **true**
<!-- NOTE: This has been generated via update-readme.js -->
- **browser_stop_tracing**
- Title: Stop tracing
- Description: Stop trace recording
- Parameters: None
- Read-only: **true**
</details>
<!--- End of tools generated section -->
```
--------------------------------------------------------------------------------
/SECURITY.md:
--------------------------------------------------------------------------------
```markdown
<!-- BEGIN MICROSOFT SECURITY.MD V0.0.9 BLOCK -->
## Security
Microsoft takes the security of our software products and services seriously, which includes all source code repositories managed through our GitHub organizations, which include [Microsoft](https://github.com/Microsoft), [Azure](https://github.com/Azure), [DotNet](https://github.com/dotnet), [AspNet](https://github.com/aspnet) and [Xamarin](https://github.com/xamarin).
If you believe you have found a security vulnerability in any Microsoft-owned repository that meets [Microsoft's definition of a security vulnerability](https://aka.ms/security.md/definition), please report it to us as described below.
## Reporting Security Issues
**Please do not report security vulnerabilities through public GitHub issues.**
Instead, please report them to the Microsoft Security Response Center (MSRC) at [https://msrc.microsoft.com/create-report](https://aka.ms/security.md/msrc/create-report).
If you prefer to submit without logging in, send email to [[email protected]](mailto:[email protected]). If possible, encrypt your message with our PGP key; please download it from the [Microsoft Security Response Center PGP Key page](https://aka.ms/security.md/msrc/pgp).
You should receive a response within 24 hours. If for some reason you do not, please follow up via email to ensure we received your original message. Additional information can be found at [microsoft.com/msrc](https://www.microsoft.com/msrc).
Please include the requested information listed below (as much as you can provide) to help us better understand the nature and scope of the possible issue:
* Type of issue (e.g. buffer overflow, SQL injection, cross-site scripting, etc.)
* Full paths of source file(s) related to the manifestation of the issue
* The location of the affected source code (tag/branch/commit or direct URL)
* Any special configuration required to reproduce the issue
* Step-by-step instructions to reproduce the issue
* Proof-of-concept or exploit code (if possible)
* Impact of the issue, including how an attacker might exploit the issue
This information will help us triage your report more quickly.
If you are reporting for a bug bounty, more complete reports can contribute to a higher bounty award. Please visit our [Microsoft Bug Bounty Program](https://aka.ms/security.md/msrc/bounty) page for more details about our active programs.
## Preferred Languages
We prefer all communications to be in English.
## Policy
Microsoft follows the principle of [Coordinated Vulnerability Disclosure](https://aka.ms/security.md/cvd).
<!-- END MICROSOFT SECURITY.MD BLOCK -->
```
--------------------------------------------------------------------------------
/CONTRIBUTING.md:
--------------------------------------------------------------------------------
```markdown
# Contributing
## Choose an issue
Playwright MCP **requires an issue** for every contribution, except for minor documentation updates.
If you are passionate about a bug/feature, but cannot find an issue describing it, **file an issue first**. This will
facilitate the discussion, and you might get some early feedback from project maintainers before spending your time on
creating a pull request.
## Make a change
> [!WARNING]
> The core of the Playwright MCP was moved to the [Playwright monorepo](https://github.com/microsoft/playwright).
Clone the Playwright repository. If you plan to send a pull request, it might be better to [fork the repository](https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/working-with-forks/fork-a-repo) first.
```bash
git clone https://github.com/microsoft/playwright
cd playwright
```
Install dependencies and run the build in watch mode.
```bash
# install deps and run watch
npm ci
npm run watch
npx playwright install
```
Source code for Playwright MCP is located at [packages/playwright/src/mcp](https://github.com/microsoft/playwright/blob/main/packages/playwright/src/mcp).
```bash
# list source files
ls -la packages/playwright/src/mcp
```
Coding style is fully defined in [eslint.config.mjs](https://github.com/microsoft/playwright/blob/main/eslint.config.mjs). Before creating a pull request, or at any moment during development, run linter to check all kinds of things:
```bash
# lint the source base before sending PR
npm run flint
```
Comments should have an explicit purpose and should improve readability rather than hinder it. If the code would not be understood without comments, consider re-writing the code to make it self-explanatory.
## Add a test
Playwright requires a test for the new or modified functionality. An exception would be a pure refactoring, but chances are you are doing more than that.
There are multiple [test suites](https://github.com/microsoft/playwright/blob/main/tests) in Playwright that will be executed on the CI. Tests for Playwright MCP are located at [tests/mcp](https://github.com/microsoft/playwright/blob/main/tests/mcp).
```bash
# list test files
ls -la tests/mcp
```
To run the mcp tests, use
```bash
# fast path runs all MCP tests in Chromium
npm run mcp-ctest
```
```bash
# slow path runs all tests in three browsers
npm run mcp-test
```
Since Playwright tests are using Playwright under the hood, everything from our documentation applies, for example [this guide on running and debugging tests](https://playwright.dev/docs/running-tests#running-tests).
Note that tests should be *hermetic*, and not depend on external services. Tests should work on all three platforms: macOS, Linux and Windows.
## Write a commit message
Commit messages should follow the [Semantic Commit Messages](https://www.conventionalcommits.org/en/v1.0.0/) format:
```
label(namespace): title
description
footer
```
1. *label* is one of the following:
- `fix` - bug fixes
- `feat` - new features
- `docs` - documentation-only changes
- `test` - test-only changes
- `devops` - changes to the CI or build
- `chore` - everything that doesn't fall under previous categories
2. *namespace* is put in parentheses after label and is optional. Must be lowercase.
3. *title* is a brief summary of changes.
4. *description* is **optional**, new-line separated from title and is in present tense.
5. *footer* is **optional**, new-line separated from *description* and contains "fixes" / "references" attribution to GitHub issues.
Example:
```
feat(trace viewer): network panel filtering
This patch adds a filtering toolbar to the network panel.
<link to a screenshot>
Fixes #123, references #234.
```
## Send a pull request
All submissions, including submissions by project members, require review. We use GitHub pull requests for this purpose.
Make sure to keep your PR (diff) small and readable. If necessary, split your contribution into multiple PRs.
Consult [GitHub Help](https://help.github.com/articles/about-pull-requests/) for more information on using pull requests.
After a successful code review, one of the maintainers will merge your pull request. Congratulations!
## More details
**No new dependencies**
There is a very high bar for new dependencies, including updating to a new version of an existing dependency. We recommend to explicitly discuss this in an issue and get a green light from a maintainer, before creating a pull request that updates dependencies.
## Contributor License Agreement
This project welcomes contributions and suggestions. Most contributions require you to agree to a
Contributor License Agreement (CLA) declaring that you have the right to, and actually do, grant us
the rights to use your contribution. For details, visit https://cla.opensource.microsoft.com.
When you submit a pull request, a CLA bot will automatically determine whether you need to provide
a CLA and decorate the PR appropriately (e.g., status check, comment). Simply follow the instructions
provided by the bot. You will only need to do this once across all repos using our CLA.
### Code of Conduct
This project has adopted the [Microsoft Open Source Code of Conduct](https://opensource.microsoft.com/codeofconduct/).
For more information see the [Code of Conduct FAQ](https://opensource.microsoft.com/codeofconduct/faq/) or
contact [[email protected]](mailto:[email protected]) with any additional questions or comments.
```
--------------------------------------------------------------------------------
/extension/src/ui/tsconfig.json:
--------------------------------------------------------------------------------
```json
// Help VSCode to find right tsconfig file.
{
"extends": "../../tsconfig.ui.json"
}
```
--------------------------------------------------------------------------------
/extension/src/ui/status.html:
--------------------------------------------------------------------------------
```html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Playwright MCP Bridge Status</title>
<link rel="stylesheet" href="connect.css">
</head>
<body>
<div id="root"></div>
<script src="status.tsx" type="module"></script>
</body>
</html>
```
--------------------------------------------------------------------------------
/extension/tsconfig.ui.json:
--------------------------------------------------------------------------------
```json
{
"compilerOptions": {
"target": "ESNext",
"esModuleInterop": true,
"moduleResolution": "node",
"strict": true,
"module": "ESNext",
"rootDir": "src",
"outDir": "./lib",
"resolveJsonModule": true,
"types": ["chrome"],
"jsx": "react-jsx",
"jsxImportSource": "react",
"noEmit": true,
},
"include": [
"src/ui",
],
}
```
--------------------------------------------------------------------------------
/extension/tsconfig.json:
--------------------------------------------------------------------------------
```json
{
"compilerOptions": {
"target": "ESNext",
"esModuleInterop": true,
"moduleResolution": "node",
"strict": true,
"module": "ESNext",
"rootDir": "src",
"outDir": "./dist/lib",
"resolveJsonModule": true,
"types": ["chrome"],
"jsx": "react-jsx",
"jsxImportSource": "react",
"noEmit": true
},
"include": [
"src",
],
"exclude": [
"src/ui",
]
}
```
--------------------------------------------------------------------------------
/index.js:
--------------------------------------------------------------------------------
```javascript
#!/usr/bin/env node
/**
* Copyright (c) Microsoft Corporation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
const { createConnection } = require('playwright/lib/mcp/index');
module.exports = { createConnection };
```
--------------------------------------------------------------------------------
/extension/src/ui/icons.css:
--------------------------------------------------------------------------------
```css
/*
Copyright (c) Microsoft Corporation.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
.octicon {
display: inline-block;
overflow: visible !important;
vertical-align: text-bottom;
fill: currentColor;
margin-right: 7px;
flex: none;
}
.color-icon-success {
color: var(--color-success-fg) !important;
}
.color-text-danger {
color: var(--color-danger-fg) !important;
}
```
--------------------------------------------------------------------------------
/index.d.ts:
--------------------------------------------------------------------------------
```typescript
#!/usr/bin/env node
/**
* Copyright (c) Microsoft Corporation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import type { Server } from '@modelcontextprotocol/sdk/server/index.js';
import type { Config } from './config';
import type { BrowserContext } from 'playwright';
export declare function createConnection(config?: Config, contextGetter?: () => Promise<BrowserContext>): Promise<Server>;
export {};
```
--------------------------------------------------------------------------------
/cli.js:
--------------------------------------------------------------------------------
```javascript
#!/usr/bin/env node
/**
* Copyright (c) Microsoft Corporation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
const { program } = require('playwright-core/lib/utilsBundle');
const { decorateCommand } = require('playwright/lib/mcp/program');
const packageJSON = require('./package.json');
const p = program.version('Version ' + packageJSON.version).name('Playwright MCP');
decorateCommand(p, packageJSON.version)
void program.parseAsync(process.argv);
```
--------------------------------------------------------------------------------
/extension/src/ui/copyToClipboard.css:
--------------------------------------------------------------------------------
```css
/*
Copyright (c) Microsoft Corporation.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
.copy-icon {
flex: none;
height: 24px;
width: 24px;
border: none;
outline: none;
color: var(--color-fg-muted);
background: transparent;
padding: 4px;
cursor: pointer;
display: inline-flex;
align-items: center;
justify-content: center;
border-radius: 4px;
}
.copy-icon svg {
margin: 0;
}
.copy-icon:not(:disabled):hover {
background-color: var(--color-btn-selected-bg);
}
```
--------------------------------------------------------------------------------
/extension/playwright.config.ts:
--------------------------------------------------------------------------------
```typescript
/**
* Copyright (c) Microsoft Corporation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import { defineConfig } from '@playwright/test';
import type { TestOptions } from '../tests/fixtures';
export default defineConfig<TestOptions>({
testDir: './tests',
fullyParallel: true,
forbidOnly: !!process.env.CI,
retries: process.env.CI ? 2 : 0,
workers: process.env.CI ? 1 : undefined,
reporter: 'list',
projects: [
{ name: 'chromium', use: { mcpBrowser: 'chromium' } },
],
});
```
--------------------------------------------------------------------------------
/tests/core.spec.ts:
--------------------------------------------------------------------------------
```typescript
/**
* Copyright (c) Microsoft Corporation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import { test, expect } from './fixtures';
test('browser_navigate', async ({ client, server }) => {
expect(await client.callTool({
name: 'browser_navigate',
arguments: { url: server.HELLO_WORLD },
})).toHaveResponse({
code: `await page.goto('${server.HELLO_WORLD}');`,
pageState: `- Page URL: ${server.HELLO_WORLD}
- Page Title: Title
- Page Snapshot:
\`\`\`yaml
- generic [active] [ref=e1]: Hello, world!
\`\`\``,
});
});
```
--------------------------------------------------------------------------------
/extension/src/ui/connect.html:
--------------------------------------------------------------------------------
```html
<!--
Copyright (c) Microsoft Corporation.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<!DOCTYPE html>
<html>
<head>
<title>Playwright MCP extension</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="icon" type="image/png" sizes="32x32" href="../../icons/icon-32.png">
<link rel="icon" type="image/png" sizes="16x16" href="../../icons/icon-16.png">
<link rel="stylesheet" href="connect.css">
</head>
<body>
<div id="root"></div>
<script type="module" src="connect.tsx"></script>
</body>
</html>
```
--------------------------------------------------------------------------------
/extension/package.json:
--------------------------------------------------------------------------------
```json
{
"name": "@playwright/mcp-extension",
"version": "0.0.45",
"description": "Playwright MCP Browser Extension",
"private": true,
"repository": {
"type": "git",
"url": "git+https://github.com/microsoft/playwright-mcp.git"
},
"homepage": "https://playwright.dev",
"engines": {
"node": ">=18"
},
"author": {
"name": "Microsoft Corporation"
},
"license": "Apache-2.0",
"scripts": {
"build": "tsc --project . && tsc --project tsconfig.ui.json && vite build && vite build --config vite.sw.config.mts",
"watch": "tsc --watch --project . & tsc --watch --project tsconfig.ui.json & vite build --watch & vite build --watch --config vite.sw.config.mts",
"test": "playwright test",
"clean": "rm -rf dist"
},
"devDependencies": {
"@types/chrome": "^0.0.315",
"@types/react": "^18.2.66",
"@types/react-dom": "^18.2.22",
"@vitejs/plugin-react": "^4.0.0",
"react": "^18.2.0",
"react-dom": "^18.2.0",
"typescript": "^5.8.2",
"vite": "^5.4.21",
"vite-plugin-static-copy": "^3.1.1"
}
}
```
--------------------------------------------------------------------------------
/extension/manifest.json:
--------------------------------------------------------------------------------
```json
{
"manifest_version": 3,
"name": "Playwright MCP Bridge",
"version": "0.0.45",
"description": "Share browser tabs with Playwright MCP server",
"key": "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA9nMS2b0WCohjVHPGb8D9qAdkbIngDqoAjTeSccHJijgcONejge+OJxOQOMLu7b0ovt1c9BiEJa5JcpM+EHFVGL1vluBxK71zmBy1m2f9vZF3HG0LSCp7YRkum9rAIEthDwbkxx6XTvpmAY5rjFa/NON6b9Hlbo+8peUSkoOK7HTwYnnI36asZ9eUTiveIf+DMPLojW2UX33vDWG2UKvMVDewzclb4+uLxAYshY7Mx8we/b44xu+Anb/EBLKjOPk9Yh541xJ5Ozc8EiP/5yxOp9c/lRiYUHaRW+4r0HKZyFt0eZ52ti2iM4Nfk7jRXR7an3JPsUIf5deC/1cVM/+1ZQIDAQAB",
"permissions": [
"debugger",
"activeTab",
"tabs",
"storage"
],
"host_permissions": [
"<all_urls>"
],
"background": {
"service_worker": "lib/background.mjs",
"type": "module"
},
"action": {
"default_title": "Playwright MCP Bridge",
"default_icon": {
"16": "icons/icon-16.png",
"32": "icons/icon-32.png",
"48": "icons/icon-48.png",
"128": "icons/icon-128.png"
}
},
"icons": {
"16": "icons/icon-16.png",
"32": "icons/icon-32.png",
"48": "icons/icon-48.png",
"128": "icons/icon-128.png"
}
}
```
--------------------------------------------------------------------------------
/playwright.config.ts:
--------------------------------------------------------------------------------
```typescript
/**
* Copyright (c) Microsoft Corporation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import { defineConfig } from '@playwright/test';
import type { TestOptions } from './tests/fixtures';
export default defineConfig<TestOptions>({
testDir: './tests',
fullyParallel: true,
forbidOnly: !!process.env.CI,
workers: process.env.CI ? 2 : undefined,
reporter: 'list',
projects: [
{ name: 'chrome' },
...process.env.MCP_IN_DOCKER ? [{
name: 'chromium-docker',
grep: /browser_navigate|browser_click/,
use: {
mcpBrowser: 'chromium',
mcpMode: 'docker' as const
}
}] : [],
],
});
```
--------------------------------------------------------------------------------
/tests/library.spec.ts:
--------------------------------------------------------------------------------
```typescript
/**
* Copyright (c) Microsoft Corporation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import child_process from 'child_process';
import fs from 'fs/promises';
import { test, expect } from './fixtures';
test('library can be used from CommonJS', { annotation: { type: 'issue', description: 'https://github.com/microsoft/playwright-mcp/issues/456' } }, async ({}, testInfo) => {
const file = testInfo.outputPath('main.cjs');
await fs.writeFile(file, `
import('@playwright/mcp')
.then(playwrightMCP => playwrightMCP.createConnection())
.then(() => console.log('OK'));
`);
expect(child_process.execSync(`node ${file}`, { encoding: 'utf-8' })).toContain('OK');
});
```
--------------------------------------------------------------------------------
/tests/click.spec.ts:
--------------------------------------------------------------------------------
```typescript
/**
* Copyright (c) Microsoft Corporation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import { test, expect } from './fixtures';
test('browser_click', async ({ client, server }) => {
server.setContent('/', `
<title>Title</title>
<button>Submit</button>
<script>
const button = document.querySelector('button');
button.addEventListener('click', () => {
button.focus(); // without manual focus, webkit focuses body
});
</script>
`, 'text/html');
expect(await client.callTool({
name: 'browser_navigate',
arguments: { url: server.PREFIX },
})).toHaveResponse({
code: `await page.goto('${server.PREFIX}');`,
pageState: expect.stringContaining(`- button \"Submit\" [ref=e2]`),
});
expect(await client.callTool({
name: 'browser_click',
arguments: {
element: 'Submit button',
ref: 'e2',
},
})).toHaveResponse({
code: `await page.getByRole('button', { name: 'Submit' }).click();`,
pageState: expect.stringContaining(`button "Submit" [active] [ref=e2]`),
});
});
```
--------------------------------------------------------------------------------
/extension/src/ui/copyToClipboard.tsx:
--------------------------------------------------------------------------------
```typescript
/**
* Copyright (c) Microsoft Corporation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import * as React from 'react';
import * as icons from './icons';
import './copyToClipboard.css';
type CopyToClipboardProps = {
value: string;
};
/**
* A copy to clipboard button.
*/
export const CopyToClipboard: React.FunctionComponent<CopyToClipboardProps> = ({ value }) => {
type IconType = 'copy' | 'check' | 'cross';
const [icon, setIcon] = React.useState<IconType>('copy');
React.useEffect(() => {
setIcon('copy');
}, [value]);
React.useEffect(() => {
if (icon === 'check') {
const timeout = setTimeout(() => {
setIcon('copy');
}, 3000);
return () => clearTimeout(timeout);
}
}, [icon]);
const handleCopy = React.useCallback(() => {
navigator.clipboard.writeText(value).then(() => {
setIcon('check');
}, () => {
setIcon('cross');
});
}, [value]);
const iconElement = icon === 'check' ? icons.check() : icon === 'cross' ? icons.cross() : icons.copy();
return <button className='copy-icon' title='Copy to clipboard' aria-label='Copy to clipboard' onClick={handleCopy}>{iconElement}</button>;
};
```
--------------------------------------------------------------------------------
/package.json:
--------------------------------------------------------------------------------
```json
{
"name": "@playwright/mcp",
"version": "0.0.45",
"description": "Playwright Tools for MCP",
"repository": {
"type": "git",
"url": "git+https://github.com/microsoft/playwright-mcp.git"
},
"homepage": "https://playwright.dev",
"engines": {
"node": ">=18"
},
"author": {
"name": "Microsoft Corporation"
},
"license": "Apache-2.0",
"scripts": {
"lint": "npm run update-readme",
"update-readme": "node update-readme.js",
"docker-build": "docker build --no-cache -t playwright-mcp-dev:latest .",
"docker-rm": "docker rm playwright-mcp-dev",
"docker-run": "docker run -it -p 8080:8080 --name playwright-mcp-dev playwright-mcp-dev:latest",
"test": "playwright test",
"ctest": "playwright test --project=chrome",
"ftest": "playwright test --project=firefox",
"wtest": "playwright test --project=webkit",
"dtest": "MCP_IN_DOCKER=1 playwright test --project=chromium-docker",
"npm-publish": "npm run clean && npm run test && npm publish",
"copy-config": "cp ../playwright/packages/playwright/src/mcp/config.d.ts . && perl -pi -e \"s|import type \\* as playwright from 'playwright-core';|import type * as playwright from 'playwright';|\" ./config.d.ts",
"roll": "npm run copy-config && npm run lint"
},
"exports": {
"./package.json": "./package.json",
".": {
"types": "./index.d.ts",
"default": "./index.js"
}
},
"dependencies": {
"playwright": "1.57.0-alpha-1761929702000",
"playwright-core": "1.57.0-alpha-1761929702000"
},
"bin": {
"mcp-server-playwright": "cli.js"
},
"devDependencies": {
"@modelcontextprotocol/sdk": "^1.17.5",
"@playwright/test": "1.57.0-alpha-1761929702000",
"@types/node": "^24.3.0",
"zod-to-json-schema": "^3.24.6"
}
}
```
--------------------------------------------------------------------------------
/extension/src/ui/tabItem.tsx:
--------------------------------------------------------------------------------
```typescript
/**
* Copyright (c) Microsoft Corporation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import React from 'react';
export interface TabInfo {
id: number;
windowId: number;
title: string;
url: string;
favIconUrl?: string;
}
export const Button: React.FC<{ variant: 'primary' | 'default' | 'reject'; onClick: () => void; children: React.ReactNode }> = ({
variant,
onClick,
children
}) => {
return (
<button className={`button ${variant}`} onClick={onClick}>
{children}
</button>
);
};
export interface TabItemProps {
tab: TabInfo;
onClick?: () => void;
button?: React.ReactNode;
}
export const TabItem: React.FC<TabItemProps> = ({
tab,
onClick,
button
}) => {
return (
<div className='tab-item' onClick={onClick} style={onClick ? { cursor: 'pointer' } : undefined}>
<img
src={tab.favIconUrl || 'data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16"><rect width="16" height="16" fill="%23f6f8fa"/></svg>'}
alt=''
className='tab-favicon'
/>
<div className='tab-content'>
<div className='tab-title'>
{tab.title || 'Untitled'}
</div>
<div className='tab-url'>{tab.url}</div>
</div>
{button}
</div>
);
};
```
--------------------------------------------------------------------------------
/Dockerfile:
--------------------------------------------------------------------------------
```dockerfile
ARG PLAYWRIGHT_BROWSERS_PATH=/ms-playwright
# ------------------------------
# Base
# ------------------------------
# Base stage: Contains only the minimal dependencies required for runtime
# (node_modules and Playwright system dependencies)
FROM node:22-bookworm-slim AS base
ARG PLAYWRIGHT_BROWSERS_PATH
ENV PLAYWRIGHT_BROWSERS_PATH=${PLAYWRIGHT_BROWSERS_PATH}
# Set the working directory
WORKDIR /app
RUN --mount=type=cache,target=/root/.npm,sharing=locked,id=npm-cache \
--mount=type=bind,source=package.json,target=package.json \
--mount=type=bind,source=package-lock.json,target=package-lock.json \
npm ci --omit=dev && \
# Install system dependencies for playwright
npx -y playwright-core install-deps chromium
# ------------------------------
# Builder
# ------------------------------
FROM base AS builder
RUN --mount=type=cache,target=/root/.npm,sharing=locked,id=npm-cache \
--mount=type=bind,source=package.json,target=package.json \
--mount=type=bind,source=package-lock.json,target=package-lock.json \
npm ci
# Copy the rest of the app
COPY *.json *.js *.ts .
# ------------------------------
# Browser
# ------------------------------
# Cache optimization:
# - Browser is downloaded only when node_modules or Playwright system dependencies change
# - Cache is reused when only source code changes
FROM base AS browser
RUN npx -y playwright-core install --no-shell chromium
# ------------------------------
# Runtime
# ------------------------------
FROM base
ARG PLAYWRIGHT_BROWSERS_PATH
ARG USERNAME=node
ENV NODE_ENV=production
ENV PLAYWRIGHT_MCP_OUTPUT_DIR=/tmp/playwright-output
# Set the correct ownership for the runtime user on production `node_modules`
RUN chown -R ${USERNAME}:${USERNAME} node_modules
USER ${USERNAME}
COPY --from=browser --chown=${USERNAME}:${USERNAME} ${PLAYWRIGHT_BROWSERS_PATH} ${PLAYWRIGHT_BROWSERS_PATH}
COPY --chown=${USERNAME}:${USERNAME} cli.js package.json ./
# Run in headless and only with chromium (other browsers need more dependencies not included in this image)
ENTRYPOINT ["node", "cli.js", "--headless", "--browser", "chromium", "--no-sandbox"]
```
--------------------------------------------------------------------------------
/extension/src/ui/authToken.css:
--------------------------------------------------------------------------------
```css
/*
Copyright (c) Microsoft Corporation.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
.auth-token-section {
margin: 16px 0;
padding: 16px;
background-color: #f6f8fa;
border-radius: 6px;
}
.auth-token-description {
font-size: 12px;
color: #656d76;
margin-bottom: 12px;
}
.auth-token-container {
display: flex;
align-items: center;
gap: 8px;
background-color: #ffffff;
padding: 8px;
}
.auth-token-code {
font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
font-size: 12px;
color: #1f2328;
border: none;
flex: 1;
padding: 0;
word-break: break-all;
}
.auth-token-refresh {
flex: none;
height: 24px;
width: 24px;
border: none;
outline: none;
color: var(--color-fg-muted);
background: transparent;
padding: 4px;
cursor: pointer;
display: inline-flex;
align-items: center;
justify-content: center;
border-radius: 4px;
}
.auth-token-refresh svg {
margin: 0;
}
.auth-token-refresh:not(:disabled):hover {
background-color: var(--color-btn-selected-bg);
}
.auth-token-example-section {
margin-top: 16px;
}
.auth-token-example-toggle {
display: flex;
align-items: center;
gap: 8px;
background: none;
border: none;
padding: 8px 0;
font-size: 12px;
color: #656d76;
cursor: pointer;
outline: none;
text-align: left;
width: 100%;
}
.auth-token-example-toggle:hover {
color: #1f2328;
}
.auth-token-chevron {
display: inline-flex;
align-items: center;
justify-content: center;
transform: rotate(-90deg);
flex-shrink: 0;
}
.auth-token-chevron.expanded {
transform: rotate(0deg);
}
.auth-token-chevron svg {
width: 12px;
height: 12px;
}
.auth-token-chevron .octicon {
margin: 0px;
}
.auth-token-example-content {
margin-top: 12px;
padding: 12px 0;
}
.auth-token-example-description {
font-size: 12px;
color: #656d76;
margin-bottom: 12px;
}
.auth-token-example-config {
display: flex;
align-items: flex-start;
gap: 8px;
background-color: #ffffff;
padding: 12px;
}
.auth-token-example-code {
font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
font-size: 11px;
color: #1f2328;
white-space: pre;
flex: 1;
line-height: 1.4;
}
```
--------------------------------------------------------------------------------
/.github/workflows/ci.yml:
--------------------------------------------------------------------------------
```yaml
name: CI
on:
push:
branches: [ main ]
pull_request:
branches: [ main ]
jobs:
lint:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v4
- name: Use Node.js 20
uses: actions/setup-node@v4
with:
node-version: '20'
cache: 'npm'
- name: Install dependencies
run: npm ci
- name: Run ESLint
run: npm run lint
- name: Ensure no changes
run: git diff --exit-code
test:
strategy:
fail-fast: false
matrix:
os: [ubuntu-latest, macos-15, windows-latest]
runs-on: ${{ matrix.os }}
steps:
- uses: actions/checkout@v4
- name: Use Node.js 20
uses: actions/setup-node@v4
with:
node-version: '20'
cache: 'npm'
- name: Install dependencies
run: npm ci
- name: Playwright install
run: npx playwright install --with-deps
- name: Run tests
run: npm run test
test_docker:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v4
- name: Use Node.js 20
uses: actions/setup-node@v4
with:
node-version: '20'
cache: 'npm'
- name: Install dependencies
run: npm ci
- name: Playwright install
run: npx playwright install --with-deps chromium
- name: Set up Docker Buildx
uses: docker/setup-buildx-action@v3
- name: Build and push
uses: docker/build-push-action@v6
with:
tags: playwright-mcp-dev:latest
cache-from: type=gha
cache-to: type=gha,mode=max
load: true
- name: Run tests
shell: bash
run: |
# Used for the Docker tests to share the test-results folder with the container.
umask 0000
npm run test -- --project=chromium-docker
env:
MCP_IN_DOCKER: 1
test_extension:
runs-on: macos-latest
defaults:
run:
working-directory: ./extension
steps:
- uses: actions/checkout@v4
- name: Use Node.js 20
uses: actions/setup-node@v4
with:
node-version: '20' # crypto.randomUUID(); stalls in v18.20.8
cache: 'npm'
- name: Install dependencies
run: npm ci
- name: Build extension
run: npm run build
- name: Upload artifact
uses: actions/upload-artifact@v4
with:
name: extension
path: ./extension/dist
retention-days: 7
- name: Install MCP server
run: |
cd ..
npm ci
npx playwright install chromium
- name: Run tests
run: |
if [[ "$(uname)" == "Linux" ]]; then
xvfb-run --auto-servernum --server-args="-screen 0 1280x960x24" -- npm run test
else
npm run test
fi
shell: bash
```
--------------------------------------------------------------------------------
/extension/src/ui/icons.tsx:
--------------------------------------------------------------------------------
```typescript
/*
Copyright (c) Microsoft Corporation.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
import './icons.css';
import './colors.css';
export const cross = () => {
return <svg className='octicon color-text-danger' viewBox='0 0 16 16' version='1.1' width='16' height='16' aria-hidden='true'>
<path fillRule='evenodd' d='M3.72 3.72a.75.75 0 011.06 0L8 6.94l3.22-3.22a.75.75 0 111.06 1.06L9.06 8l3.22 3.22a.75.75 0 11-1.06 1.06L8 9.06l-3.22 3.22a.75.75 0 01-1.06-1.06L6.94 8 3.72 4.78a.75.75 0 010-1.06z'></path>
</svg>;
};
export const check = () => {
return <svg aria-hidden='true' height='16' viewBox='0 0 16 16' version='1.1' width='16' data-view-component='true' className='octicon color-icon-success'>
<path fillRule='evenodd' d='M13.78 4.22a.75.75 0 010 1.06l-7.25 7.25a.75.75 0 01-1.06 0L2.22 9.28a.75.75 0 011.06-1.06L6 10.94l6.72-6.72a.75.75 0 011.06 0z'></path>
</svg>;
};
export const copy = () => {
return <svg className='octicon' viewBox='0 0 16 16' width='16' height='16' aria-hidden='true'>
<path d='M0 6.75C0 5.784.784 5 1.75 5h1.5a.75.75 0 0 1 0 1.5h-1.5a.25.25 0 0 0-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 0 0 .25-.25v-1.5a.75.75 0 0 1 1.5 0v1.5A1.75 1.75 0 0 1 9.25 16h-7.5A1.75 1.75 0 0 1 0 14.25Z'></path>
<path d='M5 1.75C5 .784 5.784 0 6.75 0h7.5C15.216 0 16 .784 16 1.75v7.5A1.75 1.75 0 0 1 14.25 11h-7.5A1.75 1.75 0 0 1 5 9.25Zm1.75-.25a.25.25 0 0 0-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 0 0 .25-.25v-7.5a.25.25 0 0 0-.25-.25Z'></path>
</svg>;
};
export const refresh = () => {
return <svg className='octicon' viewBox="0 0 16 16" width="16" height="16" aria-hidden='true'>
<path d="M1.705 8.005a.75.75 0 0 1 .834.656 5.5 5.5 0 0 0 9.592 2.97l-1.204-1.204a.25.25 0 0 1 .177-.427h3.646a.25.25 0 0 1 .25.25v3.646a.25.25 0 0 1-.427.177l-1.38-1.38A7.002 7.002 0 0 1 1.05 8.84a.75.75 0 0 1 .656-.834ZM8 2.5a5.487 5.487 0 0 0-4.131 1.869l1.204 1.204A.25.25 0 0 1 4.896 6H1.25A.25.25 0 0 1 1 5.75V2.104a.25.25 0 0 1 .427-.177l1.38 1.38A7.002 7.002 0 0 1 14.95 7.16a.75.75 0 0 1-1.49.178A5.5 5.5 0 0 0 8 2.5Z"></path>
</svg>;
};
export const chevronDown = () => {
return <svg className='octicon' viewBox="0 0 16 16" width="16" height="16" aria-hidden='true'>
<path d="M12.78 5.22a.749.749 0 0 1 0 1.06l-4.25 4.25a.749.749 0 0 1-1.06 0L3.22 6.28a.749.749 0 1 1 1.06-1.06L8 8.939l3.72-3.719a.749.749 0 0 1 1.06 0Z"></path>
</svg>;
};
```
--------------------------------------------------------------------------------
/extension/src/ui/status.tsx:
--------------------------------------------------------------------------------
```typescript
/**
* Copyright (c) Microsoft Corporation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import React, { useState, useEffect } from 'react';
import { createRoot } from 'react-dom/client';
import { Button, TabItem } from './tabItem';
import type { TabInfo } from './tabItem';
import { AuthTokenSection } from './authToken';
interface ConnectionStatus {
isConnected: boolean;
connectedTabId: number | null;
connectedTab?: TabInfo;
}
const StatusApp: React.FC = () => {
const [status, setStatus] = useState<ConnectionStatus>({
isConnected: false,
connectedTabId: null
});
useEffect(() => {
void loadStatus();
}, []);
const loadStatus = async () => {
// Get current connection status from background script
const { connectedTabId } = await chrome.runtime.sendMessage({ type: 'getConnectionStatus' });
if (connectedTabId) {
const tab = await chrome.tabs.get(connectedTabId);
setStatus({
isConnected: true,
connectedTabId,
connectedTab: {
id: tab.id!,
windowId: tab.windowId!,
title: tab.title!,
url: tab.url!,
favIconUrl: tab.favIconUrl
}
});
} else {
setStatus({
isConnected: false,
connectedTabId: null
});
}
};
const openConnectedTab = async () => {
if (!status.connectedTabId)
return;
await chrome.tabs.update(status.connectedTabId, { active: true });
window.close();
};
const disconnect = async () => {
await chrome.runtime.sendMessage({ type: 'disconnect' });
window.close();
};
return (
<div className='app-container'>
<div className='content-wrapper'>
{status.isConnected && status.connectedTab ? (
<div>
<div className='tab-section-title'>
Page with connected MCP client:
</div>
<div>
<TabItem
tab={status.connectedTab}
button={
<Button variant='primary' onClick={disconnect}>
Disconnect
</Button>
}
onClick={openConnectedTab}
/>
</div>
</div>
) : (
<div className='status-banner'>
No MCP clients are currently connected.
</div>
)}
<AuthTokenSection />
</div>
</div>
);
};
// Initialize the React app
const container = document.getElementById('root');
if (container) {
const root = createRoot(container);
root.render(<StatusApp />);
}
```
--------------------------------------------------------------------------------
/tests/capabilities.spec.ts:
--------------------------------------------------------------------------------
```typescript
/**
* Copyright (c) Microsoft Corporation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import { test, expect } from './fixtures';
test('test snapshot tool list', async ({ client }) => {
const { tools } = await client.listTools();
expect(new Set(tools.map(t => t.name))).toEqual(new Set([
'browser_click',
'browser_console_messages',
'browser_drag',
'browser_evaluate',
'browser_file_upload',
'browser_fill_form',
'browser_handle_dialog',
'browser_hover',
'browser_select_option',
'browser_type',
'browser_close',
'browser_install',
'browser_navigate_back',
'browser_navigate',
'browser_network_requests',
'browser_press_key',
'browser_resize',
'browser_snapshot',
'browser_tabs',
'browser_take_screenshot',
'browser_wait_for',
]));
});
test('test tool list proxy mode', async ({ startClient }) => {
const { client } = await startClient({
args: ['--connect-tool'],
});
const { tools } = await client.listTools();
expect(new Set(tools.map(t => t.name))).toEqual(new Set([
'browser_click',
'browser_connect', // the extra tool
'browser_console_messages',
'browser_drag',
'browser_evaluate',
'browser_file_upload',
'browser_fill_form',
'browser_handle_dialog',
'browser_hover',
'browser_select_option',
'browser_type',
'browser_close',
'browser_install',
'browser_navigate_back',
'browser_navigate',
'browser_network_requests',
'browser_press_key',
'browser_resize',
'browser_snapshot',
'browser_tabs',
'browser_take_screenshot',
'browser_wait_for',
]));
});
test('test capabilities (pdf)', async ({ startClient }) => {
const { client } = await startClient({
args: ['--caps=pdf'],
});
const { tools } = await client.listTools();
const toolNames = tools.map(t => t.name);
expect(toolNames).toContain('browser_pdf_save');
});
test('test capabilities (vision)', async ({ startClient }) => {
const { client } = await startClient({
args: ['--caps=vision'],
});
const { tools } = await client.listTools();
const toolNames = tools.map(t => t.name);
expect(toolNames).toContain('browser_mouse_move_xy');
expect(toolNames).toContain('browser_mouse_click_xy');
expect(toolNames).toContain('browser_mouse_drag_xy');
});
test('support for legacy --vision option', async ({ startClient }) => {
const { client } = await startClient({
args: ['--vision'],
});
const { tools } = await client.listTools();
const toolNames = tools.map(t => t.name);
expect(toolNames).toContain('browser_mouse_move_xy');
expect(toolNames).toContain('browser_mouse_click_xy');
expect(toolNames).toContain('browser_mouse_drag_xy');
});
```
--------------------------------------------------------------------------------
/extension/src/ui/authToken.tsx:
--------------------------------------------------------------------------------
```typescript
/**
* Copyright (c) Microsoft Corporation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import React, { useCallback, useState } from 'react';
import { CopyToClipboard } from './copyToClipboard';
import * as icons from './icons';
import './authToken.css';
export const AuthTokenSection: React.FC<{}> = ({}) => {
const [authToken, setAuthToken] = useState<string>(getOrCreateAuthToken);
const [isExampleExpanded, setIsExampleExpanded] = useState<boolean>(false);
const onRegenerateToken = useCallback(() => {
const newToken = generateAuthToken();
localStorage.setItem('auth-token', newToken);
setAuthToken(newToken);
}, []);
const toggleExample = useCallback(() => {
setIsExampleExpanded(!isExampleExpanded);
}, [isExampleExpanded]);
return (
<div className='auth-token-section'>
<div className='auth-token-description'>
Set this environment variable to bypass the connection dialog:
</div>
<div className='auth-token-container'>
<code className='auth-token-code'>{authTokenCode(authToken)}</code>
<button className='auth-token-refresh' title='Generate new token' aria-label='Generate new token'onClick={onRegenerateToken}>{icons.refresh()}</button>
<CopyToClipboard value={authTokenCode(authToken)} />
</div>
<div className='auth-token-example-section'>
<button
className='auth-token-example-toggle'
onClick={toggleExample}
aria-expanded={isExampleExpanded}
title={isExampleExpanded ? 'Hide example config' : 'Show example config'}
>
<span className={`auth-token-chevron ${isExampleExpanded ? 'expanded' : ''}`}>
{icons.chevronDown()}
</span>
Example MCP server configuration
</button>
{isExampleExpanded && (
<div className='auth-token-example-content'>
<div className='auth-token-example-description'>
Add this configuration to your MCP client (e.g., VS Code) to connect to the Playwright MCP Bridge:
</div>
<div className='auth-token-example-config'>
<code className='auth-token-example-code'>{exampleConfig(authToken)}</code>
<CopyToClipboard value={exampleConfig(authToken)} />
</div>
</div>
)}
</div>
</div>
);
};
function authTokenCode(authToken: string) {
return `PLAYWRIGHT_MCP_EXTENSION_TOKEN=${authToken}`;
}
function exampleConfig(authToken: string) {
return `{
"mcpServers": {
"playwright": {
"command": "npx",
"args": ["@playwright/mcp@latest", "--extension"],
"env": {
"PLAYWRIGHT_MCP_EXTENSION_TOKEN":
"${authToken}"
}
}
}
}`;
}
function generateAuthToken(): string {
// Generate a cryptographically secure random token
const array = new Uint8Array(32);
crypto.getRandomValues(array);
// Convert to base64 and make it URL-safe
return btoa(String.fromCharCode.apply(null, Array.from(array)))
.replace(/[+/=]/g, match => {
switch (match) {
case '+': return '-';
case '/': return '_';
case '=': return '';
default: return match;
}
});
}
export const getOrCreateAuthToken = (): string => {
let token = localStorage.getItem('auth-token');
if (!token) {
token = generateAuthToken();
localStorage.setItem('auth-token', token);
}
return token;
}
```
--------------------------------------------------------------------------------
/extension/src/ui/connect.css:
--------------------------------------------------------------------------------
```css
/*
Copyright (c) Microsoft Corporation.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
body {
margin: 0;
padding: 0;
}
/* Base styles */
.app-container {
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans", Helvetica, Arial, sans-serif;
background-color: #ffffff;
color: #1f2328;
margin: 0;
padding: 16px;
min-height: 100vh;
font-size: 14px;
}
.content-wrapper {
max-width: 600px;
margin: 0 auto;
}
/* Status Banner */
.status-container {
display: flex;
align-items: center;
justify-content: space-between;
margin-bottom: 16px;
padding-right: 12px;
}
.status-banner {
padding: 12px;
font-size: 14px;
font-weight: 500;
display: flex;
align-items: center;
gap: 8px;
flex: 1;
}
.status-banner.connected {
color: #1f2328;
}
.status-banner.connected::before {
content: "\2705";
margin-right: 8px;
}
.status-banner.error {
color: #1f2328;
}
.status-banner.error::before {
content: "\274C";
margin-right: 8px;
}
/* Buttons */
.button-container {
margin-bottom: 16px;
display: flex;
justify-content: flex-end;
padding-right: 12px;
}
.button {
padding: 8px 16px;
border-radius: 6px;
border: none;
font-size: 14px;
font-weight: 500;
cursor: pointer;
display: inline-flex;
align-items: center;
justify-content: center;
text-decoration: none;
margin-right: 8px;
min-width: 90px;
}
.button.primary {
background-color: #f8f9fa;
color: #3c4043;
border: 1px solid #dadce0;
}
.button.primary:hover {
background-color: #f1f3f4;
border-color: #dadce0;
box-shadow: 0 1px 2px 0 rgba(60,64,67,.1);
}
.button.default {
background-color: #f6f8fa;
color: #24292f;
}
.button.default:hover {
background-color: #f3f4f6;
}
.button.reject {
background-color: #da3633;
color: #ffffff;
border: 1px solid #da3633;
}
.button.reject:hover {
background-color: #c73836;
border-color: #c73836;
}
/* Tab selection */
.tab-section-title {
padding-left: 12px;
font-size: 12px;
font-weight: 400;
margin-bottom: 12px;
color: #656d76;
}
.tab-item {
display: flex;
align-items: center;
padding: 12px;
margin-bottom: 8px;
background-color: #ffffff;
cursor: pointer;
border-radius: 6px;
transition: background-color 0.2s ease;
}
.tab-item:hover {
background-color: #f8f9fa;
}
.tab-item.selected {
background-color: #f6f8fa;
}
.tab-item.disabled {
cursor: not-allowed;
opacity: 0.5;
}
.tab-radio {
margin-right: 12px;
flex-shrink: 0;
}
.tab-favicon {
width: 16px;
height: 16px;
margin-right: 8px;
flex-shrink: 0;
}
.tab-content {
flex: 1;
min-width: 0;
}
.tab-title {
font-weight: 500;
color: #1f2328;
margin-bottom: 2px;
white-space: nowrap;
overflow: hidden;
text-overflow: ellipsis;
}
.tab-url {
font-size: 12px;
color: #656d76;
white-space: nowrap;
overflow: hidden;
text-overflow: ellipsis;
}
/* Link-style button */
.link-button {
background: none;
border: none;
color: #0066cc;
text-decoration: underline;
cursor: pointer;
padding: 0;
font: inherit;
}
/* Auth token section */
.auth-token-section {
margin: 16px 0;
padding: 16px;
background-color: #f6f8fa;
border-radius: 6px;
}
.auth-token-description {
font-size: 12px;
color: #656d76;
margin-bottom: 12px;
}
.auth-token-container {
display: flex;
align-items: center;
gap: 8px;
background-color: #ffffff;
padding: 8px;
}
.auth-token-code {
font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
font-size: 12px;
color: #1f2328;
border: none;
flex: 1;
padding: 0;
word-break: break-all;
}
.auth-token-refresh {
flex: none;
height: 24px;
width: 24px;
border: none;
outline: none;
color: var(--color-fg-muted);
background: transparent;
padding: 4px;
cursor: pointer;
display: inline-flex;
align-items: center;
justify-content: center;
border-radius: 4px;
}
.auth-token-refresh svg {
margin: 0;
}
.auth-token-refresh:not(:disabled):hover {
background-color: var(--color-btn-selected-bg);
}
```
--------------------------------------------------------------------------------
/config.d.ts:
--------------------------------------------------------------------------------
```typescript
/**
* Copyright (c) Microsoft Corporation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import type * as playwright from 'playwright';
export type ToolCapability = 'core' | 'core-tabs' | 'core-install' | 'vision' | 'pdf' | 'testing' | 'tracing';
export type Config = {
/**
* The browser to use.
*/
browser?: {
/**
* The type of browser to use.
*/
browserName?: 'chromium' | 'firefox' | 'webkit';
/**
* Keep the browser profile in memory, do not save it to disk.
*/
isolated?: boolean;
/**
* Path to a user data directory for browser profile persistence.
* Temporary directory is created by default.
*/
userDataDir?: string;
/**
* Launch options passed to
* @see https://playwright.dev/docs/api/class-browsertype#browser-type-launch-persistent-context
*
* This is useful for settings options like `channel`, `headless`, `executablePath`, etc.
*/
launchOptions?: playwright.LaunchOptions;
/**
* Context options for the browser context.
*
* This is useful for settings options like `viewport`.
*/
contextOptions?: playwright.BrowserContextOptions;
/**
* Chrome DevTools Protocol endpoint to connect to an existing browser instance in case of Chromium family browsers.
*/
cdpEndpoint?: string;
/**
* CDP headers to send with the connect request.
*/
cdpHeaders?: Record<string, string>;
/**
* Remote endpoint to connect to an existing Playwright server.
*/
remoteEndpoint?: string;
/**
* Paths to JavaScript files to add as initialization scripts.
* The scripts will be evaluated in every page before any of the page's scripts.
*/
initScript?: string[];
},
server?: {
/**
* The port to listen on for SSE or MCP transport.
*/
port?: number;
/**
* The host to bind the server to. Default is localhost. Use 0.0.0.0 to bind to all interfaces.
*/
host?: string;
/**
* The hosts this server is allowed to serve from. Defaults to the host server is bound to.
* This is not for CORS, but rather for the DNS rebinding protection.
*/
allowedHosts?: string[];
},
/**
* List of enabled tool capabilities. Possible values:
* - 'core': Core browser automation features.
* - 'pdf': PDF generation and manipulation.
* - 'vision': Coordinate-based interactions.
*/
capabilities?: ToolCapability[];
/**
* Whether to save the Playwright session into the output directory.
*/
saveSession?: boolean;
/**
* Whether to save the Playwright trace of the session into the output directory.
*/
saveTrace?: boolean;
/**
* If specified, saves the Playwright video of the session into the output directory.
*/
saveVideo?: {
width: number;
height: number;
};
/**
* Reuse the same browser context between all connected HTTP clients.
*/
sharedBrowserContext?: boolean;
/**
* Secrets are used to prevent LLM from getting sensitive data while
* automating scenarios such as authentication.
* Prefer the browser.contextOptions.storageState over secrets file as a more secure alternative.
*/
secrets?: Record<string, string>;
/**
* The directory to save output files.
*/
outputDir?: string;
network?: {
/**
* List of origins to allow the browser to request. Default is to allow all. Origins matching both `allowedOrigins` and `blockedOrigins` will be blocked.
*/
allowedOrigins?: string[];
/**
* List of origins to block the browser to request. Origins matching both `allowedOrigins` and `blockedOrigins` will be blocked.
*/
blockedOrigins?: string[];
};
/**
* Specify the attribute to use for test ids, defaults to "data-testid".
*/
testIdAttribute?: string;
timeouts?: {
/*
* Configures default action timeout: https://playwright.dev/docs/api/class-page#page-set-default-timeout. Defaults to 5000ms.
*/
action?: number;
/*
* Configures default navigation timeout: https://playwright.dev/docs/api/class-page#page-set-default-navigation-timeout. Defaults to 60000ms.
*/
navigation?: number;
};
/**
* Whether to send image responses to the client. Can be "allow", "omit", or "auto". Defaults to "auto", which sends images if the client can display them.
*/
imageResponses?: 'allow' | 'omit';
};
```
--------------------------------------------------------------------------------
/.github/workflows/publish.yml:
--------------------------------------------------------------------------------
```yaml
name: Publish
on:
workflow_dispatch:
schedule:
- cron: '0 8 * * *'
release:
types: [published]
jobs:
publish-canary-npm:
if: github.event.schedule || github.event_name == 'workflow_dispatch'
runs-on: ubuntu-latest
permissions:
contents: read
id-token: write # Required for OIDC npm publishing
steps:
- uses: actions/checkout@v5
- uses: actions/setup-node@v5
with:
node-version: 20
registry-url: https://registry.npmjs.org/
# Ensure npm 11.5.1 or later is installed (for OIDC npm publishing)
- name: Update npm
run: npm install -g npm@latest
- name: Get current date
id: date
run: echo "date=$(date +'%Y-%m-%d')" >> $GITHUB_OUTPUT
- name: Get current version
id: version
run: echo "version=$(node -p "require('./package.json').version")" >> $GITHUB_OUTPUT
- name: Set canary version
id: canary-version
run: echo "version=${{ steps.version.outputs.version }}-alpha-${{ steps.date.outputs.date }}" >> $GITHUB_OUTPUT
- name: Update package.json version
run: |
npm version ${{ steps.canary-version.outputs.version }} --no-git-tag-version
- run: npm ci
- run: npx playwright install --with-deps
- run: npm run lint
- run: npm run ctest
- name: Publish to npm with next tag
run: npm publish --tag next
publish-release-npm:
if: github.event_name == 'release'
runs-on: ubuntu-latest
permissions:
contents: read
id-token: write # Required for OIDC npm publishing
steps:
- uses: actions/checkout@v5
- uses: actions/setup-node@v5
with:
node-version: 20
registry-url: https://registry.npmjs.org/
# Ensure npm 11.5.1 or later is installed (for OIDC npm publishing)
- name: Update npm
run: npm install -g npm@latest
- run: npm ci
- run: npx playwright install --with-deps
- run: npm run lint
- run: npm run ctest
- run: npm publish
publish-release-docker:
if: github.event_name == 'release'
runs-on: ubuntu-latest
permissions:
contents: read
id-token: write # Needed for OIDC login to Azure
environment: allow-publishing-docker-to-acr
steps:
- uses: actions/checkout@v5
- name: Set up QEMU # Needed for multi-platform builds (e.g., arm64 on amd64 runner)
uses: docker/setup-qemu-action@v3
- name: Set up Docker Buildx # Needed for multi-platform builds
uses: docker/setup-buildx-action@v3
- name: Azure Login via OIDC
uses: azure/login@v2
with:
client-id: ${{ secrets.AZURE_DOCKER_CLIENT_ID }}
tenant-id: ${{ secrets.AZURE_DOCKER_TENANT_ID }}
subscription-id: ${{ secrets.AZURE_DOCKER_SUBSCRIPTION_ID }}
- name: Login to ACR
run: az acr login --name playwright
- name: Build and push Docker image
id: build-push
uses: docker/build-push-action@v6
with:
context: .
file: ./Dockerfile # Adjust path if your Dockerfile is elsewhere
platforms: linux/amd64,linux/arm64
push: true
tags: |
playwright.azurecr.io/public/playwright/mcp:${{ github.event.release.tag_name }}
playwright.azurecr.io/public/playwright/mcp:latest
- uses: oras-project/setup-oras@v1
- name: Set oras tags
run: |
attach_eol_manifest() {
local image="$1"
local today=$(date -u +'%Y-%m-%d')
# oras is re-using Docker credentials, so we don't need to login.
# Following the advice in https://portal.microsofticm.com/imp/v3/incidents/incident/476783820/summary
oras attach --artifact-type application/vnd.microsoft.artifact.lifecycle --annotation "vnd.microsoft.artifact.lifecycle.end-of-life.date=$today" $image
}
# for each tag, attach the eol manifest
for tag in $(echo ${{ steps.build-push.outputs.metadata['image.name'] }} | tr ',' '\n'); do
attach_eol_manifest $tag
done
package-release-extension:
if: github.event_name == 'release'
runs-on: ubuntu-latest
permissions:
contents: write # Needed to upload release assets
steps:
- uses: actions/checkout@v5
- uses: actions/setup-node@v5
with:
node-version: 20
cache: 'npm'
- name: Install extension dependencies
working-directory: ./extension
run: npm ci
- name: Build extension
working-directory: ./extension
run: npm run build
- name: Get extension version
id: get-version
working-directory: ./extension
run: echo "version=$(node -p "require('./package.json').version")" >> $GITHUB_OUTPUT
- name: Package extension
working-directory: ./extension
run: |
cd dist
zip -r ../playwright-mcp-extension-${{ steps.get-version.outputs.version }}.zip .
cd ..
- name: Upload extension to release
env:
GITHUB_TOKEN: ${{ github.token }}
run: |
gh release upload ${{github.event.release.tag_name}} ./extension/playwright-mcp-extension-${{ steps.get-version.outputs.version }}.zip
```
--------------------------------------------------------------------------------
/update-readme.js:
--------------------------------------------------------------------------------
```javascript
#!/usr/bin/env node
/**
* Copyright (c) Microsoft Corporation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
// @ts-check
const fs = require('fs')
const path = require('path')
const { zodToJsonSchema } = require('zod-to-json-schema')
const { execSync } = require('child_process');
const { browserTools } = require('playwright/lib/mcp/browser/tools');
const capabilities = {
'core': 'Core automation',
'core-tabs': 'Tab management',
'core-install': 'Browser installation',
'vision': 'Coordinate-based (opt-in via --caps=vision)',
'pdf': 'PDF generation (opt-in via --caps=pdf)',
'testing': 'Test assertions (opt-in via --caps=testing)',
'tracing': 'Tracing (opt-in via --caps=tracing)',
};
const toolsByCapability = Object.fromEntries(Object.entries(capabilities).map(([capability, title]) => [title, browserTools.filter(tool => tool.capability === capability).sort((a, b) => a.schema.name.localeCompare(b.schema.name))]));
/**
* @param {any} tool
* @returns {string[]}
*/
function formatToolForReadme(tool) {
const lines = /** @type {string[]} */ ([]);
lines.push(`<!-- NOTE: This has been generated via ${path.basename(__filename)} -->`);
lines.push(``);
lines.push(`- **${tool.name}**`);
lines.push(` - Title: ${tool.title}`);
lines.push(` - Description: ${tool.description}`);
const inputSchema = /** @type {any} */ (zodToJsonSchema(tool.inputSchema || {}));
const requiredParams = inputSchema.required || [];
if (inputSchema.properties && Object.keys(inputSchema.properties).length) {
lines.push(` - Parameters:`);
Object.entries(inputSchema.properties).forEach(([name, param]) => {
const optional = !requiredParams.includes(name);
const meta = /** @type {string[]} */ ([]);
if (param.type)
meta.push(param.type);
if (optional)
meta.push('optional');
lines.push(` - \`${name}\` ${meta.length ? `(${meta.join(', ')})` : ''}: ${param.description}`);
});
} else {
lines.push(` - Parameters: None`);
}
lines.push(` - Read-only: **${tool.type === 'readOnly'}**`);
lines.push('');
return lines;
}
/**
* @param {string} content
* @param {string} startMarker
* @param {string} endMarker
* @param {string[]} generatedLines
* @returns {Promise<string>}
*/
async function updateSection(content, startMarker, endMarker, generatedLines) {
const startMarkerIndex = content.indexOf(startMarker);
const endMarkerIndex = content.indexOf(endMarker);
if (startMarkerIndex === -1 || endMarkerIndex === -1)
throw new Error('Markers for generated section not found in README');
return [
content.slice(0, startMarkerIndex + startMarker.length),
'',
generatedLines.join('\n'),
'',
content.slice(endMarkerIndex),
].join('\n');
}
/**
* @param {string} content
* @returns {Promise<string>}
*/
async function updateTools(content) {
console.log('Loading tool information from compiled modules...');
const generatedLines = /** @type {string[]} */ ([]);
for (const [capability, tools] of Object.entries(toolsByCapability)) {
console.log('Updating tools for capability:', capability);
generatedLines.push(`<details>\n<summary><b>${capability}</b></summary>`);
generatedLines.push('');
for (const tool of tools)
generatedLines.push(...formatToolForReadme(tool.schema));
generatedLines.push(`</details>`);
generatedLines.push('');
}
const startMarker = `<!--- Tools generated by ${path.basename(__filename)} -->`;
const endMarker = `<!--- End of tools generated section -->`;
return updateSection(content, startMarker, endMarker, generatedLines);
}
/**
* @param {string} content
* @returns {Promise<string>}
*/
async function updateOptions(content) {
console.log('Listing options...');
const output = execSync('node cli.js --help');
const lines = output.toString().split('\n');
const firstLine = lines.findIndex(line => line.includes('--version'));
lines.splice(0, firstLine + 1);
const lastLine = lines.findIndex(line => line.includes('--help'));
lines.splice(lastLine);
const startMarker = `<!--- Options generated by ${path.basename(__filename)} -->`;
const endMarker = `<!--- End of options generated section -->`;
return updateSection(content, startMarker, endMarker, [
'```',
'> npx @playwright/mcp@latest --help',
...lines,
'```',
]);
}
async function updateReadme() {
const readmePath = path.join(__dirname, 'README.md');
const readmeContent = await fs.promises.readFile(readmePath, 'utf-8');
const withTools = await updateTools(readmeContent);
const withOptions = await updateOptions(withTools);
await fs.promises.writeFile(readmePath, withOptions, 'utf-8');
console.log('README updated successfully');
}
updateReadme().catch(err => {
console.error('Error updating README:', err);
process.exit(1);
});
```
--------------------------------------------------------------------------------
/tests/testserver/index.ts:
--------------------------------------------------------------------------------
```typescript
/**
* Copyright 2017 Google Inc. All rights reserved.
* Modifications copyright (c) Microsoft Corporation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import fs from 'fs';
import http from 'http';
import https from 'https';
import path from 'path';
import debug from 'debug';
const fulfillSymbol = Symbol('fulfil callback');
const rejectSymbol = Symbol('reject callback');
export class TestServer {
private _server: http.Server;
readonly debugServer: any;
private _routes = new Map<string, (request: http.IncomingMessage, response: http.ServerResponse) => any>();
private _csp = new Map<string, string>();
private _extraHeaders = new Map<string, object>();
private _requestSubscribers = new Map<string, Promise<any>>();
readonly PORT: number;
readonly PREFIX: string;
readonly CROSS_PROCESS_PREFIX: string;
readonly HELLO_WORLD: string;
static async create(port: number): Promise<TestServer> {
const server = new TestServer(port);
await new Promise(x => server._server.once('listening', x));
return server;
}
static async createHTTPS(port: number): Promise<TestServer> {
const server = new TestServer(port, {
key: await fs.promises.readFile(path.join(path.dirname(__filename), 'key.pem')),
cert: await fs.promises.readFile(path.join(path.dirname(__filename), 'cert.pem')),
passphrase: 'aaaa',
});
await new Promise(x => server._server.once('listening', x));
return server;
}
constructor(port: number, sslOptions?: object) {
if (sslOptions)
this._server = https.createServer(sslOptions, this._onRequest.bind(this));
else
this._server = http.createServer(this._onRequest.bind(this));
this._server.listen(port);
this.debugServer = debug('pw:testserver');
const cross_origin = '127.0.0.1';
const same_origin = 'localhost';
const protocol = sslOptions ? 'https' : 'http';
this.PORT = port;
this.PREFIX = `${protocol}://${same_origin}:${port}/`;
this.CROSS_PROCESS_PREFIX = `${protocol}://${cross_origin}:${port}/`;
this.HELLO_WORLD = `${this.PREFIX}hello-world`;
}
setCSP(path: string, csp: string) {
this._csp.set(path, csp);
}
setExtraHeaders(path: string, object: Record<string, string>) {
this._extraHeaders.set(path, object);
}
async stop() {
this.reset();
await new Promise(x => this._server.close(x));
}
route(path: string, handler: (request: http.IncomingMessage, response: http.ServerResponse) => any) {
this._routes.set(path, handler);
}
setContent(path: string, content: string, mimeType: string) {
this.route(path, (req, res) => {
res.writeHead(200, { 'Content-Type': mimeType });
res.end(mimeType === 'text/html' ? `<!DOCTYPE html>${content}` : content);
});
}
redirect(from: string, to: string) {
this.route(from, (req, res) => {
const headers = this._extraHeaders.get(req.url!) || {};
res.writeHead(302, { ...headers, location: to });
res.end();
});
}
waitForRequest(path: string): Promise<http.IncomingMessage> {
let promise = this._requestSubscribers.get(path);
if (promise)
return promise;
let fulfill, reject;
promise = new Promise((f, r) => {
fulfill = f;
reject = r;
});
promise[fulfillSymbol] = fulfill;
promise[rejectSymbol] = reject;
this._requestSubscribers.set(path, promise);
return promise;
}
reset() {
this._routes.clear();
this._csp.clear();
this._extraHeaders.clear();
this._server.closeAllConnections();
const error = new Error('Static Server has been reset');
for (const subscriber of this._requestSubscribers.values())
subscriber[rejectSymbol].call(null, error);
this._requestSubscribers.clear();
this.setContent('/favicon.ico', '', 'image/x-icon');
this.setContent('/', ``, 'text/html');
this.setContent('/hello-world', `
<title>Title</title>
<body>Hello, world!</body>
`, 'text/html');
}
_onRequest(request: http.IncomingMessage, response: http.ServerResponse) {
request.on('error', error => {
if ((error as any).code === 'ECONNRESET')
response.end();
else
throw error;
});
(request as any).postBody = new Promise(resolve => {
const chunks: Buffer[] = [];
request.on('data', chunk => {
chunks.push(chunk);
});
request.on('end', () => resolve(Buffer.concat(chunks)));
});
const path = request.url || '/';
this.debugServer(`request ${request.method} ${path}`);
// Notify request subscriber.
if (this._requestSubscribers.has(path)) {
this._requestSubscribers.get(path)![fulfillSymbol].call(null, request);
this._requestSubscribers.delete(path);
}
const handler = this._routes.get(path);
if (handler) {
handler.call(null, request, response);
} else {
response.writeHead(404);
response.end();
}
}
}
```
--------------------------------------------------------------------------------
/extension/src/relayConnection.ts:
--------------------------------------------------------------------------------
```typescript
/**
* Copyright (c) Microsoft Corporation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
export function debugLog(...args: unknown[]): void {
const enabled = true;
if (enabled) {
// eslint-disable-next-line no-console
console.log('[Extension]', ...args);
}
}
type ProtocolCommand = {
id: number;
method: string;
params?: any;
};
type ProtocolResponse = {
id?: number;
method?: string;
params?: any;
result?: any;
error?: string;
};
export class RelayConnection {
private _debuggee: chrome.debugger.Debuggee;
private _ws: WebSocket;
private _eventListener: (source: chrome.debugger.DebuggerSession, method: string, params: any) => void;
private _detachListener: (source: chrome.debugger.Debuggee, reason: string) => void;
private _tabPromise: Promise<void>;
private _tabPromiseResolve!: () => void;
private _closed = false;
onclose?: () => void;
constructor(ws: WebSocket) {
this._debuggee = { };
this._tabPromise = new Promise(resolve => this._tabPromiseResolve = resolve);
this._ws = ws;
this._ws.onmessage = this._onMessage.bind(this);
this._ws.onclose = () => this._onClose();
// Store listeners for cleanup
this._eventListener = this._onDebuggerEvent.bind(this);
this._detachListener = this._onDebuggerDetach.bind(this);
chrome.debugger.onEvent.addListener(this._eventListener);
chrome.debugger.onDetach.addListener(this._detachListener);
}
// Either setTabId or close is called after creating the connection.
setTabId(tabId: number): void {
this._debuggee = { tabId };
this._tabPromiseResolve();
}
close(message: string): void {
this._ws.close(1000, message);
// ws.onclose is called asynchronously, so we call it here to avoid forwarding
// CDP events to the closed connection.
this._onClose();
}
private _onClose() {
if (this._closed)
return;
this._closed = true;
chrome.debugger.onEvent.removeListener(this._eventListener);
chrome.debugger.onDetach.removeListener(this._detachListener);
chrome.debugger.detach(this._debuggee).catch(() => {});
this.onclose?.();
}
private _onDebuggerEvent(source: chrome.debugger.DebuggerSession, method: string, params: any): void {
if (source.tabId !== this._debuggee.tabId)
return;
debugLog('Forwarding CDP event:', method, params);
const sessionId = source.sessionId;
this._sendMessage({
method: 'forwardCDPEvent',
params: {
sessionId,
method,
params,
},
});
}
private _onDebuggerDetach(source: chrome.debugger.Debuggee, reason: string): void {
if (source.tabId !== this._debuggee.tabId)
return;
this.close(`Debugger detached: ${reason}`);
this._debuggee = { };
}
private _onMessage(event: MessageEvent): void {
this._onMessageAsync(event).catch(e => debugLog('Error handling message:', e));
}
private async _onMessageAsync(event: MessageEvent): Promise<void> {
let message: ProtocolCommand;
try {
message = JSON.parse(event.data);
} catch (error: any) {
debugLog('Error parsing message:', error);
this._sendError(-32700, `Error parsing message: ${error.message}`);
return;
}
debugLog('Received message:', message);
const response: ProtocolResponse = {
id: message.id,
};
try {
response.result = await this._handleCommand(message);
} catch (error: any) {
debugLog('Error handling command:', error);
response.error = error.message;
}
debugLog('Sending response:', response);
this._sendMessage(response);
}
private async _handleCommand(message: ProtocolCommand): Promise<any> {
if (message.method === 'attachToTab') {
await this._tabPromise;
debugLog('Attaching debugger to tab:', this._debuggee);
await chrome.debugger.attach(this._debuggee, '1.3');
const result: any = await chrome.debugger.sendCommand(this._debuggee, 'Target.getTargetInfo');
return {
targetInfo: result?.targetInfo,
};
}
if (!this._debuggee.tabId)
throw new Error('No tab is connected. Please go to the Playwright MCP extension and select the tab you want to connect to.');
if (message.method === 'forwardCDPCommand') {
const { sessionId, method, params } = message.params;
debugLog('CDP command:', method, params);
const debuggerSession: chrome.debugger.DebuggerSession = {
...this._debuggee,
sessionId,
};
// Forward CDP command to chrome.debugger
return await chrome.debugger.sendCommand(
debuggerSession,
method,
params
);
}
}
private _sendError(code: number, message: string): void {
this._sendMessage({
error: {
code,
message,
},
});
}
private _sendMessage(message: any): void {
if (this._ws.readyState === WebSocket.OPEN)
this._ws.send(JSON.stringify(message));
}
}
```
--------------------------------------------------------------------------------
/extension/src/ui/connect.tsx:
--------------------------------------------------------------------------------
```typescript
/**
* Copyright (c) Microsoft Corporation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import React, { useCallback, useEffect, useState } from 'react';
import { createRoot } from 'react-dom/client';
import { Button, TabItem } from './tabItem';
import { AuthTokenSection, getOrCreateAuthToken } from './authToken';
import type { TabInfo } from './tabItem';
type Status =
| { type: 'connecting'; message: string }
| { type: 'connected'; message: string }
| { type: 'error'; message: string }
| { type: 'error'; versionMismatch: { extensionVersion: string; } };
const SUPPORTED_PROTOCOL_VERSION = 1;
const ConnectApp: React.FC = () => {
const [tabs, setTabs] = useState<TabInfo[]>([]);
const [status, setStatus] = useState<Status | null>(null);
const [showButtons, setShowButtons] = useState(true);
const [showTabList, setShowTabList] = useState(true);
const [clientInfo, setClientInfo] = useState('unknown');
const [mcpRelayUrl, setMcpRelayUrl] = useState('');
const [newTab, setNewTab] = useState<boolean>(false);
useEffect(() => {
const runAsync = async () => {
const params = new URLSearchParams(window.location.search);
const relayUrl = params.get('mcpRelayUrl');
if (!relayUrl) {
setShowButtons(false);
setStatus({ type: 'error', message: 'Missing mcpRelayUrl parameter in URL.' });
return;
}
setMcpRelayUrl(relayUrl);
try {
const client = JSON.parse(params.get('client') || '{}');
const info = `${client.name}/${client.version}`;
setClientInfo(info);
setStatus({
type: 'connecting',
message: `🎭 Playwright MCP started from "${info}" is trying to connect. Do you want to continue?`
});
} catch (e) {
setStatus({ type: 'error', message: 'Failed to parse client version.' });
return;
}
const parsedVersion = parseInt(params.get('protocolVersion') ?? '', 10);
const requiredVersion = isNaN(parsedVersion) ? 1 : parsedVersion;
if (requiredVersion > SUPPORTED_PROTOCOL_VERSION) {
const extensionVersion = chrome.runtime.getManifest().version;
setShowButtons(false);
setShowTabList(false);
setStatus({
type: 'error',
versionMismatch: {
extensionVersion,
}
});
return;
}
const expectedToken = getOrCreateAuthToken();
const token = params.get('token');
if (token === expectedToken) {
await connectToMCPRelay(relayUrl);
await handleConnectToTab();
return;
}
if (token) {
handleReject('Invalid token provided.');
return;
}
await connectToMCPRelay(relayUrl);
// If this is a browser_navigate command, hide the tab list and show simple allow/reject
if (params.get('newTab') === 'true') {
setNewTab(true);
setShowTabList(false);
} else {
await loadTabs();
}
};
void runAsync();
}, []);
const handleReject = useCallback((message: string) => {
setShowButtons(false);
setShowTabList(false);
setStatus({ type: 'error', message });
}, []);
const connectToMCPRelay = useCallback(async (mcpRelayUrl: string) => {
const response = await chrome.runtime.sendMessage({ type: 'connectToMCPRelay', mcpRelayUrl });
if (!response.success)
handleReject(response.error);
}, [handleReject]);
const loadTabs = useCallback(async () => {
const response = await chrome.runtime.sendMessage({ type: 'getTabs' });
if (response.success)
setTabs(response.tabs);
else
setStatus({ type: 'error', message: 'Failed to load tabs: ' + response.error });
}, []);
const handleConnectToTab = useCallback(async (tab?: TabInfo) => {
setShowButtons(false);
setShowTabList(false);
try {
const response = await chrome.runtime.sendMessage({
type: 'connectToTab',
mcpRelayUrl,
tabId: tab?.id,
windowId: tab?.windowId,
});
if (response?.success) {
setStatus({ type: 'connected', message: `MCP client "${clientInfo}" connected.` });
} else {
setStatus({
type: 'error',
message: response?.error || `MCP client "${clientInfo}" failed to connect.`
});
}
} catch (e) {
setStatus({
type: 'error',
message: `MCP client "${clientInfo}" failed to connect: ${e}`
});
}
}, [clientInfo, mcpRelayUrl]);
useEffect(() => {
const listener = (message: any) => {
if (message.type === 'connectionTimeout')
handleReject('Connection timed out.');
};
chrome.runtime.onMessage.addListener(listener);
return () => {
chrome.runtime.onMessage.removeListener(listener);
};
}, [handleReject]);
return (
<div className='app-container'>
<div className='content-wrapper'>
{status && (
<div className='status-container'>
<StatusBanner status={status} />
{showButtons && (
<div className='button-container'>
{newTab ? (
<>
<Button variant='primary' onClick={() => handleConnectToTab()}>
Allow
</Button>
<Button variant='reject' onClick={() => handleReject('Connection rejected. This tab can be closed.')}>
Reject
</Button>
</>
) : (
<Button variant='reject' onClick={() => handleReject('Connection rejected. This tab can be closed.')}>
Reject
</Button>
)}
</div>
)}
</div>
)}
{status?.type === 'connecting' && (
<AuthTokenSection />
)}
{showTabList && (
<div>
<div className='tab-section-title'>
Select page to expose to MCP server:
</div>
<div>
{tabs.map(tab => (
<TabItem
key={tab.id}
tab={tab}
button={
<Button variant='primary' onClick={() => handleConnectToTab(tab)}>
Connect
</Button>
}
/>
))}
</div>
</div>
)}
</div>
</div>
);
};
const VersionMismatchError: React.FC<{ extensionVersion: string }> = ({ extensionVersion }) => {
const readmeUrl = 'https://github.com/microsoft/playwright-mcp/blob/main/extension/README.md';
const latestReleaseUrl = 'https://github.com/microsoft/playwright-mcp/releases/latest';
return (
<div>
Playwright MCP version trying to connect requires newer extension version (current version: {extensionVersion}).{' '}
<a href={latestReleaseUrl}>Click here</a> to download latest version of the extension, then drag and drop it into the Chrome Extensions page.{' '}
See <a href={readmeUrl} target='_blank' rel='noopener noreferrer'>installation instructions</a> for more details.
</div>
);
};
const StatusBanner: React.FC<{ status: Status }> = ({ status }) => {
return (
<div className={`status-banner ${status.type}`}>
{'versionMismatch' in status ? (
<VersionMismatchError
extensionVersion={status.versionMismatch.extensionVersion}
/>
) : (
status.message
)}
</div>
);
};
// Initialize the React app
const container = document.getElementById('root');
if (container) {
const root = createRoot(container);
root.render(<ConnectApp />);
}
```
--------------------------------------------------------------------------------
/extension/src/background.ts:
--------------------------------------------------------------------------------
```typescript
/**
* Copyright (c) Microsoft Corporation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import { RelayConnection, debugLog } from './relayConnection';
type PageMessage = {
type: 'connectToMCPRelay';
mcpRelayUrl: string;
} | {
type: 'getTabs';
} | {
type: 'connectToTab';
tabId?: number;
windowId?: number;
mcpRelayUrl: string;
} | {
type: 'getConnectionStatus';
} | {
type: 'disconnect';
};
class TabShareExtension {
private _activeConnection: RelayConnection | undefined;
private _connectedTabId: number | null = null;
private _pendingTabSelection = new Map<number, { connection: RelayConnection, timerId?: number }>();
constructor() {
chrome.tabs.onRemoved.addListener(this._onTabRemoved.bind(this));
chrome.tabs.onUpdated.addListener(this._onTabUpdated.bind(this));
chrome.tabs.onActivated.addListener(this._onTabActivated.bind(this));
chrome.runtime.onMessage.addListener(this._onMessage.bind(this));
chrome.action.onClicked.addListener(this._onActionClicked.bind(this));
}
// Promise-based message handling is not supported in Chrome: https://issues.chromium.org/issues/40753031
private _onMessage(message: PageMessage, sender: chrome.runtime.MessageSender, sendResponse: (response: any) => void) {
switch (message.type) {
case 'connectToMCPRelay':
this._connectToRelay(sender.tab!.id!, message.mcpRelayUrl).then(
() => sendResponse({ success: true }),
(error: any) => sendResponse({ success: false, error: error.message }));
return true;
case 'getTabs':
this._getTabs().then(
tabs => sendResponse({ success: true, tabs, currentTabId: sender.tab?.id }),
(error: any) => sendResponse({ success: false, error: error.message }));
return true;
case 'connectToTab':
const tabId = message.tabId || sender.tab?.id!;
const windowId = message.windowId || sender.tab?.windowId!;
this._connectTab(sender.tab!.id!, tabId, windowId, message.mcpRelayUrl!).then(
() => sendResponse({ success: true }),
(error: any) => sendResponse({ success: false, error: error.message }));
return true; // Return true to indicate that the response will be sent asynchronously
case 'getConnectionStatus':
sendResponse({
connectedTabId: this._connectedTabId
});
return false;
case 'disconnect':
this._disconnect().then(
() => sendResponse({ success: true }),
(error: any) => sendResponse({ success: false, error: error.message }));
return true;
}
return false;
}
private async _connectToRelay(selectorTabId: number, mcpRelayUrl: string): Promise<void> {
try {
debugLog(`Connecting to relay at ${mcpRelayUrl}`);
const socket = new WebSocket(mcpRelayUrl);
await new Promise<void>((resolve, reject) => {
socket.onopen = () => resolve();
socket.onerror = () => reject(new Error('WebSocket error'));
setTimeout(() => reject(new Error('Connection timeout')), 5000);
});
const connection = new RelayConnection(socket);
connection.onclose = () => {
debugLog('Connection closed');
this._pendingTabSelection.delete(selectorTabId);
// TODO: show error in the selector tab?
};
this._pendingTabSelection.set(selectorTabId, { connection });
debugLog(`Connected to MCP relay`);
} catch (error: any) {
const message = `Failed to connect to MCP relay: ${error.message}`;
debugLog(message);
throw new Error(message);
}
}
private async _connectTab(selectorTabId: number, tabId: number, windowId: number, mcpRelayUrl: string): Promise<void> {
try {
debugLog(`Connecting tab ${tabId} to relay at ${mcpRelayUrl}`);
try {
this._activeConnection?.close('Another connection is requested');
} catch (error: any) {
debugLog(`Error closing active connection:`, error);
}
await this._setConnectedTabId(null);
this._activeConnection = this._pendingTabSelection.get(selectorTabId)?.connection;
if (!this._activeConnection)
throw new Error('No active MCP relay connection');
this._pendingTabSelection.delete(selectorTabId);
this._activeConnection.setTabId(tabId);
this._activeConnection.onclose = () => {
debugLog('MCP connection closed');
this._activeConnection = undefined;
void this._setConnectedTabId(null);
};
await Promise.all([
this._setConnectedTabId(tabId),
chrome.tabs.update(tabId, { active: true }),
chrome.windows.update(windowId, { focused: true }),
]);
debugLog(`Connected to MCP bridge`);
} catch (error: any) {
await this._setConnectedTabId(null);
debugLog(`Failed to connect tab ${tabId}:`, error.message);
throw error;
}
}
private async _setConnectedTabId(tabId: number | null): Promise<void> {
const oldTabId = this._connectedTabId;
this._connectedTabId = tabId;
if (oldTabId && oldTabId !== tabId)
await this._updateBadge(oldTabId, { text: '' });
if (tabId)
await this._updateBadge(tabId, { text: '✓', color: '#4CAF50', title: 'Connected to MCP client' });
}
private async _updateBadge(tabId: number, { text, color, title }: { text: string; color?: string, title?: string }): Promise<void> {
try {
await chrome.action.setBadgeText({ tabId, text });
await chrome.action.setTitle({ tabId, title: title || '' });
if (color)
await chrome.action.setBadgeBackgroundColor({ tabId, color });
} catch (error: any) {
// Ignore errors as the tab may be closed already.
}
}
private async _onTabRemoved(tabId: number): Promise<void> {
const pendingConnection = this._pendingTabSelection.get(tabId)?.connection;
if (pendingConnection) {
this._pendingTabSelection.delete(tabId);
pendingConnection.close('Browser tab closed');
return;
}
if (this._connectedTabId !== tabId)
return;
this._activeConnection?.close('Browser tab closed');
this._activeConnection = undefined;
this._connectedTabId = null;
}
private _onTabActivated(activeInfo: chrome.tabs.TabActiveInfo) {
for (const [tabId, pending] of this._pendingTabSelection) {
if (tabId === activeInfo.tabId) {
if (pending.timerId) {
clearTimeout(pending.timerId);
pending.timerId = undefined;
}
continue;
}
if (!pending.timerId) {
pending.timerId = setTimeout(() => {
const existed = this._pendingTabSelection.delete(tabId);
if (existed) {
pending.connection.close('Tab has been inactive for 5 seconds');
chrome.tabs.sendMessage(tabId, { type: 'connectionTimeout' });
}
}, 5000);
return;
}
}
}
private _onTabUpdated(tabId: number, changeInfo: chrome.tabs.TabChangeInfo, tab: chrome.tabs.Tab) {
if (this._connectedTabId === tabId)
void this._setConnectedTabId(tabId);
}
private async _getTabs(): Promise<chrome.tabs.Tab[]> {
const tabs = await chrome.tabs.query({});
return tabs.filter(tab => tab.url && !['chrome:', 'edge:', 'devtools:'].some(scheme => tab.url!.startsWith(scheme)));
}
private async _onActionClicked(): Promise<void> {
await chrome.tabs.create({
url: chrome.runtime.getURL('status.html'),
active: true
});
}
private async _disconnect(): Promise<void> {
this._activeConnection?.close('User disconnected');
this._activeConnection = undefined;
await this._setConnectedTabId(null);
}
}
new TabShareExtension();
```
--------------------------------------------------------------------------------
/tests/fixtures.ts:
--------------------------------------------------------------------------------
```typescript
/**
* Copyright (c) Microsoft Corporation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import fs from 'fs';
import path from 'path';
import { chromium } from 'playwright';
import { test as baseTest, expect as baseExpect } from '@playwright/test';
import { StdioClientTransport } from '@modelcontextprotocol/sdk/client/stdio.js';
import { Client } from '@modelcontextprotocol/sdk/client/index.js';
import { ListRootsRequestSchema } from '@modelcontextprotocol/sdk/types.js';
import { TestServer } from './testserver/index';
import type { Config } from '../config';
import type { BrowserContext } from 'playwright';
import type { Transport } from '@modelcontextprotocol/sdk/shared/transport.js';
import type { Stream } from 'stream';
export type TestOptions = {
mcpArgs: string[] | undefined;
mcpBrowser: string | undefined;
mcpMode: 'docker' | undefined;
};
type CDPServer = {
endpoint: string;
start: () => Promise<BrowserContext>;
};
export type StartClient = (options?: {
clientName?: string,
args?: string[],
config?: Config,
roots?: { name: string, uri: string }[],
rootsResponseDelay?: number,
extensionToken?: string,
}) => Promise<{ client: Client, stderr: () => string }>;
type TestFixtures = {
client: Client;
startClient: StartClient;
wsEndpoint: string;
cdpServer: CDPServer;
server: TestServer;
httpsServer: TestServer;
mcpHeadless: boolean;
};
type WorkerFixtures = {
_workerServers: { server: TestServer, httpsServer: TestServer };
};
export const test = baseTest.extend<TestFixtures & TestOptions, WorkerFixtures>({
mcpArgs: [undefined, { option: true }],
client: async ({ startClient }, use) => {
const { client } = await startClient();
await use(client);
},
startClient: async ({ mcpHeadless, mcpBrowser, mcpMode, mcpArgs }, use, testInfo) => {
const configDir = path.dirname(test.info().config.configFile!);
const clients: Client[] = [];
await use(async options => {
const args: string[] = mcpArgs ?? [];
if (process.env.CI && process.platform === 'linux')
args.push('--no-sandbox');
if (mcpHeadless)
args.push('--headless');
if (mcpBrowser)
args.push(`--browser=${mcpBrowser}`);
if (options?.args)
args.push(...options.args);
if (options?.config) {
const configFile = testInfo.outputPath('config.json');
await fs.promises.writeFile(configFile, JSON.stringify(options.config, null, 2));
args.push(`--config=${path.relative(configDir, configFile)}`);
}
const client = new Client({ name: options?.clientName ?? 'test', version: '1.0.0' }, options?.roots ? { capabilities: { roots: {} } } : undefined);
if (options?.roots) {
client.setRequestHandler(ListRootsRequestSchema, async request => {
if (options.rootsResponseDelay)
await new Promise(resolve => setTimeout(resolve, options.rootsResponseDelay));
return {
roots: options.roots,
};
});
}
const { transport, stderr } = await createTransport(args, mcpMode, testInfo.outputPath('ms-playwright'), options?.extensionToken);
let stderrBuffer = '';
stderr?.on('data', data => {
if (process.env.PWMCP_DEBUG)
process.stderr.write(data);
stderrBuffer += data.toString();
});
clients.push(client);
await client.connect(transport);
await client.ping();
return { client, stderr: () => stderrBuffer };
});
await Promise.all(clients.map(client => client.close()));
},
wsEndpoint: async ({ }, use) => {
const browserServer = await chromium.launchServer();
await use(browserServer.wsEndpoint());
await browserServer.close();
},
cdpServer: async ({ mcpBrowser }, use, testInfo) => {
test.skip(!['chrome', 'msedge', 'chromium'].includes(mcpBrowser!), 'CDP is not supported for non-Chromium browsers');
let browserContext: BrowserContext | undefined;
const port = 3200 + test.info().parallelIndex;
await use({
endpoint: `http://localhost:${port}`,
start: async () => {
if (browserContext)
throw new Error('CDP server already exists');
browserContext = await chromium.launchPersistentContext(testInfo.outputPath('cdp-user-data-dir'), {
channel: mcpBrowser,
headless: true,
args: [
`--remote-debugging-port=${port}`,
],
});
return browserContext;
}
});
await browserContext?.close();
},
mcpHeadless: async ({ headless }, use) => {
await use(headless);
},
mcpBrowser: ['chrome', { option: true }],
mcpMode: [undefined, { option: true }],
_workerServers: [async ({ }, use, workerInfo) => {
const port = 8907 + workerInfo.workerIndex * 4;
const server = await TestServer.create(port);
const httpsPort = port + 1;
const httpsServer = await TestServer.createHTTPS(httpsPort);
await use({ server, httpsServer });
await Promise.all([
server.stop(),
httpsServer.stop(),
]);
}, { scope: 'worker' }],
server: async ({ _workerServers }, use) => {
_workerServers.server.reset();
await use(_workerServers.server);
},
httpsServer: async ({ _workerServers }, use) => {
_workerServers.httpsServer.reset();
await use(_workerServers.httpsServer);
},
});
async function createTransport(args: string[], mcpMode: TestOptions['mcpMode'], profilesDir: string, extensionToken?: string): Promise<{
transport: Transport,
stderr: Stream | null,
}> {
if (mcpMode === 'docker') {
const dockerArgs = ['run', '--rm', '-i', '--network=host', '-v', `${test.info().project.outputDir}:/app/test-results`];
const transport = new StdioClientTransport({
command: 'docker',
args: [...dockerArgs, 'playwright-mcp-dev:latest', ...args],
});
return {
transport,
stderr: transport.stderr,
};
}
const transport = new StdioClientTransport({
command: 'node',
args: [path.join(__dirname, '../cli.js'), ...args],
cwd: path.dirname(test.info().config.configFile!),
stderr: 'pipe',
env: {
...process.env,
DEBUG: 'pw:mcp:test',
DEBUG_COLORS: '0',
DEBUG_HIDE_DATE: '1',
PWMCP_PROFILES_DIR_FOR_TEST: profilesDir,
...(extensionToken ? { PLAYWRIGHT_MCP_EXTENSION_TOKEN: extensionToken } : {}),
},
});
return {
transport,
stderr: transport.stderr!,
};
}
type Response = Awaited<ReturnType<Client['callTool']>>;
export const expect = baseExpect.extend({
toHaveResponse(response: Response, object: any) {
const parsed = parseResponse(response);
const isNot = this.isNot;
try {
if (isNot)
expect(parsed).not.toEqual(expect.objectContaining(object));
else
expect(parsed).toEqual(expect.objectContaining(object));
} catch (e) {
return {
pass: isNot,
message: () => e.message,
};
}
return {
pass: !isNot,
message: () => ``,
};
},
});
export function formatOutput(output: string): string[] {
return output.split('\n').map(line => line.replace(/^pw:mcp:test /, '').replace(/user data dir.*/, 'user data dir').trim()).filter(Boolean);
}
function parseResponse(response: any) {
const text = response.content[0].text;
const sections = parseSections(text);
const result = sections.get('Result');
const code = sections.get('Ran Playwright code');
const tabs = sections.get('Open tabs');
const pageState = sections.get('Page state');
const consoleMessages = sections.get('New console messages');
const modalState = sections.get('Modal state');
const downloads = sections.get('Downloads');
const codeNoFrame = code?.replace(/^```js\n/, '').replace(/\n```$/, '');
const isError = response.isError;
const attachments = response.content.slice(1);
return {
result,
code: codeNoFrame,
tabs,
pageState,
consoleMessages,
modalState,
downloads,
isError,
attachments,
};
}
function parseSections(text: string): Map<string, string> {
const sections = new Map<string, string>();
const sectionHeaders = text.split(/^### /m).slice(1); // Remove empty first element
for (const section of sectionHeaders) {
const firstNewlineIndex = section.indexOf('\n');
if (firstNewlineIndex === -1)
continue;
const sectionName = section.substring(0, firstNewlineIndex);
const sectionContent = section.substring(firstNewlineIndex + 1).trim();
sections.set(sectionName, sectionContent);
}
return sections;
}
```
--------------------------------------------------------------------------------
/extension/tests/extension.spec.ts:
--------------------------------------------------------------------------------
```typescript
/**
* Copyright (c) Microsoft Corporation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import fs from 'fs';
import path from 'path';
import { chromium } from 'playwright';
import { test as base, expect } from '../../tests/fixtures';
import type { Client } from '@modelcontextprotocol/sdk/client/index.js';
import type { BrowserContext } from 'playwright';
import type { StartClient } from '../../tests/fixtures';
type BrowserWithExtension = {
userDataDir: string;
launch: (mode?: 'disable-extension') => Promise<BrowserContext>;
};
type TestFixtures = {
browserWithExtension: BrowserWithExtension,
pathToExtension: string,
useShortConnectionTimeout: (timeoutMs: number) => void
overrideProtocolVersion: (version: number) => void
};
const test = base.extend<TestFixtures>({
pathToExtension: async ({}, use) => {
await use(path.resolve(__dirname, '../dist'));
},
browserWithExtension: async ({ mcpBrowser, pathToExtension }, use, testInfo) => {
// The flags no longer work in Chrome since
// https://chromium.googlesource.com/chromium/src/+/290ed8046692651ce76088914750cb659b65fb17%5E%21/chrome/browser/extensions/extension_service.cc?pli=1#
test.skip('chromium' !== mcpBrowser, '--load-extension is not supported for official builds of Chromium');
let browserContext: BrowserContext | undefined;
const userDataDir = testInfo.outputPath('extension-user-data-dir');
await use({
userDataDir,
launch: async (mode?: 'disable-extension') => {
browserContext = await chromium.launchPersistentContext(userDataDir, {
channel: mcpBrowser,
// Opening the browser singleton only works in headed.
headless: false,
// Automation disables singleton browser process behavior, which is necessary for the extension.
ignoreDefaultArgs: ['--enable-automation'],
args: mode === 'disable-extension' ? [] : [
`--disable-extensions-except=${pathToExtension}`,
`--load-extension=${pathToExtension}`,
],
});
// for manifest v3:
let [serviceWorker] = browserContext.serviceWorkers();
if (!serviceWorker)
serviceWorker = await browserContext.waitForEvent('serviceworker');
return browserContext;
}
});
await browserContext?.close();
},
useShortConnectionTimeout: async ({}, use) => {
await use((timeoutMs: number) => {
process.env.PWMCP_TEST_CONNECTION_TIMEOUT = timeoutMs.toString();
});
process.env.PWMCP_TEST_CONNECTION_TIMEOUT = undefined;
},
overrideProtocolVersion: async ({}, use) => {
await use((version: number) => {
process.env.PWMCP_TEST_PROTOCOL_VERSION = version.toString();
});
process.env.PWMCP_TEST_PROTOCOL_VERSION = undefined;
}
});
async function startAndCallConnectTool(browserWithExtension: BrowserWithExtension, startClient: StartClient): Promise<Client> {
const { client } = await startClient({
args: [`--connect-tool`],
config: {
browser: {
userDataDir: browserWithExtension.userDataDir,
}
},
});
expect(await client.callTool({
name: 'browser_connect',
arguments: {
name: 'extension'
}
})).toHaveResponse({
result: 'Successfully changed connection method.',
});
return client;
}
async function startWithExtensionFlag(browserWithExtension: BrowserWithExtension, startClient: StartClient): Promise<Client> {
const { client } = await startClient({
args: [`--extension`],
config: {
browser: {
userDataDir: browserWithExtension.userDataDir,
}
},
});
return client;
}
const testWithOldExtensionVersion = test.extend({
pathToExtension: async ({}, use, testInfo) => {
const extensionDir = testInfo.outputPath('extension');
const oldPath = path.resolve(__dirname, '../dist');
await fs.promises.cp(oldPath, extensionDir, { recursive: true });
const manifestPath = path.join(extensionDir, 'manifest.json');
const manifest = JSON.parse(await fs.promises.readFile(manifestPath, 'utf8'));
manifest.version = '0.0.1';
await fs.promises.writeFile(manifestPath, JSON.stringify(manifest, null, 2) + '\n');
await use(extensionDir);
},
});
for (const [mode, startClientMethod] of [
['connect-tool', startAndCallConnectTool],
['extension-flag', startWithExtensionFlag],
] as const) {
test(`navigate with extension (${mode})`, async ({ browserWithExtension, startClient, server }) => {
const browserContext = await browserWithExtension.launch();
const client = await startClientMethod(browserWithExtension, startClient);
const confirmationPagePromise = browserContext.waitForEvent('page', page => {
return page.url().startsWith('chrome-extension://jakfalbnbhgkpmoaakfflhflbfpkailf/connect.html');
});
const navigateResponse = client.callTool({
name: 'browser_navigate',
arguments: { url: server.HELLO_WORLD },
});
const selectorPage = await confirmationPagePromise;
// For browser_navigate command, the UI shows Allow/Reject buttons instead of tab selector
await selectorPage.getByRole('button', { name: 'Allow' }).click();
expect(await navigateResponse).toHaveResponse({
pageState: expect.stringContaining(`- generic [active] [ref=e1]: Hello, world!`),
});
});
test(`snapshot of an existing page (${mode})`, async ({ browserWithExtension, startClient, server }) => {
const browserContext = await browserWithExtension.launch();
const page = await browserContext.newPage();
await page.goto(server.HELLO_WORLD);
// Another empty page.
await browserContext.newPage();
expect(browserContext.pages()).toHaveLength(3);
const client = await startClientMethod(browserWithExtension, startClient);
expect(browserContext.pages()).toHaveLength(3);
const confirmationPagePromise = browserContext.waitForEvent('page', page => {
return page.url().startsWith('chrome-extension://jakfalbnbhgkpmoaakfflhflbfpkailf/connect.html');
});
const navigateResponse = client.callTool({
name: 'browser_snapshot',
arguments: { },
});
const selectorPage = await confirmationPagePromise;
expect(browserContext.pages()).toHaveLength(4);
await selectorPage.locator('.tab-item', { hasText: 'Title' }).getByRole('button', { name: 'Connect' }).click();
expect(await navigateResponse).toHaveResponse({
pageState: expect.stringContaining(`- generic [active] [ref=e1]: Hello, world!`),
});
expect(browserContext.pages()).toHaveLength(4);
});
test(`extension not installed timeout (${mode})`, async ({ browserWithExtension, startClient, server, useShortConnectionTimeout }) => {
useShortConnectionTimeout(100);
const browserContext = await browserWithExtension.launch();
const client = await startClientMethod(browserWithExtension, startClient);
const confirmationPagePromise = browserContext.waitForEvent('page', page => {
return page.url().startsWith('chrome-extension://jakfalbnbhgkpmoaakfflhflbfpkailf/connect.html');
});
expect(await client.callTool({
name: 'browser_navigate',
arguments: { url: server.HELLO_WORLD },
})).toHaveResponse({
result: expect.stringContaining('Extension connection timeout. Make sure the "Playwright MCP Bridge" extension is installed.'),
isError: true,
});
await confirmationPagePromise;
});
testWithOldExtensionVersion(`works with old extension version (${mode})`, async ({ browserWithExtension, startClient, server, useShortConnectionTimeout }) => {
useShortConnectionTimeout(500);
// Prelaunch the browser, so that it is properly closed after the test.
const browserContext = await browserWithExtension.launch();
const client = await startClientMethod(browserWithExtension, startClient);
const confirmationPagePromise = browserContext.waitForEvent('page', page => {
return page.url().startsWith('chrome-extension://jakfalbnbhgkpmoaakfflhflbfpkailf/connect.html');
});
const navigateResponse = client.callTool({
name: 'browser_navigate',
arguments: { url: server.HELLO_WORLD },
});
const selectorPage = await confirmationPagePromise;
// For browser_navigate command, the UI shows Allow/Reject buttons instead of tab selector
await selectorPage.getByRole('button', { name: 'Allow' }).click();
expect(await navigateResponse).toHaveResponse({
pageState: expect.stringContaining(`- generic [active] [ref=e1]: Hello, world!`),
});
});
test(`extension needs update (${mode})`, async ({ browserWithExtension, startClient, server, useShortConnectionTimeout, overrideProtocolVersion }) => {
useShortConnectionTimeout(500);
overrideProtocolVersion(1000);
// Prelaunch the browser, so that it is properly closed after the test.
const browserContext = await browserWithExtension.launch();
const client = await startClientMethod(browserWithExtension, startClient);
const confirmationPagePromise = browserContext.waitForEvent('page', page => {
return page.url().startsWith('chrome-extension://jakfalbnbhgkpmoaakfflhflbfpkailf/connect.html');
});
const navigateResponse = client.callTool({
name: 'browser_navigate',
arguments: { url: server.HELLO_WORLD },
});
const confirmationPage = await confirmationPagePromise;
await expect(confirmationPage.locator('.status-banner')).toContainText(`Playwright MCP version trying to connect requires newer extension version`);
expect(await navigateResponse).toHaveResponse({
result: expect.stringContaining('Extension connection timeout.'),
isError: true,
});
});
}
test(`custom executablePath`, async ({ startClient, server, useShortConnectionTimeout }) => {
useShortConnectionTimeout(1000);
const executablePath = test.info().outputPath('echo.sh');
await fs.promises.writeFile(executablePath, '#!/bin/bash\necho "Custom exec args: $@" > "$(dirname "$0")/output.txt"', { mode: 0o755 });
const { client } = await startClient({
args: [`--extension`],
config: {
browser: {
launchOptions: {
executablePath,
},
}
},
});
const navigateResponse = await client.callTool({
name: 'browser_navigate',
arguments: { url: server.HELLO_WORLD },
timeout: 1000,
});
expect(await navigateResponse).toHaveResponse({
result: expect.stringContaining('Extension connection timeout.'),
isError: true,
});
expect(await fs.promises.readFile(test.info().outputPath('output.txt'), 'utf8')).toContain('Custom exec args: chrome-extension://jakfalbnbhgkpmoaakfflhflbfpkailf/connect.html?');
});
test(`bypass connection dialog with token`, async ({ browserWithExtension, startClient, server }) => {
const browserContext = await browserWithExtension.launch();
const page = await browserContext.newPage();
await page.goto('chrome-extension://jakfalbnbhgkpmoaakfflhflbfpkailf/status.html');
const token = await page.locator('.auth-token-code').textContent();
const [name, value] = token?.split('=') || [];
const { client } = await startClient({
args: [`--extension`],
extensionToken: value,
config: {
browser: {
userDataDir: browserWithExtension.userDataDir,
}
},
});
const navigateResponse = await client.callTool({
name: 'browser_navigate',
arguments: { url: server.HELLO_WORLD },
});
expect(await navigateResponse).toHaveResponse({
pageState: expect.stringContaining(`- generic [active] [ref=e1]: Hello, world!`),
});
});
```