Content
## 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>
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>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>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.
--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: **true**
<!-- 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: **true**
<!-- 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: **true**
<!-- 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: **true**
<!-- 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.
- `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: **true**
</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: **true**
</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.
- Read-only: **true**
</details>
<details>
<summary><b>Verify (opt-in via --caps=verify)</b></summary>
</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 -->
