Open a new isolated browser session (own cookies, storage and tabs) with options. Optional: any browser_* call with a new session id creates a default session automatically. Use it for a visible window (headed), a saved login (profile), device emulation, faster scraping (blockResources), or a logged-in worker copied from another session (cloneFrom).

List open sessions with their mode, tabs and whether they are busy.

Close one session, or all, and free their memory. Profile sessions keep their saved logins on disk.

Run many browser tasks at the same time in ONE call. Each task is a list of browser_* steps run in order in its own session; tasks run concurrently server-side. Use it to visit or scrape many pages at once, or to repeat a flow across sessions. Steps cannot use snapshot refs they have not seen, so target elements with CSS selectors (target accepts a selector) or use browser_evaluate / browser_run_code_unsafe. Keep output small: end tasks with browser_evaluate returning only the data you need.

Close this session: its tabs, cookies and storage. Profile sessions keep their saved login on disk.

Resize the browser window

Returns all console messages

Handle a dialog

Emulate CSS media features for the page, for example switch between the light and dark color scheme. Omitted parameters are left unchanged; null clears an override.

Evaluate JavaScript expression on page or element

Upload one or multiple files

Drop files or MIME-typed data onto an element, as if dragged from outside the page. At least one of "paths" or "data" must be provided.

Search the accessibility snapshot of the current page for text or a regular expression. Returns matching snapshot nodes with a few lines of surrounding context (like search snippets), each shown under its path from the root of the tree, which is cheaper than capturing the whole snapshot when you only need to locate an element and its ref.

Fill multiple form fields

Press a key on the keyboard

Type text into editable element

Navigate to a URL

Go back to the previous page in the history

Returns a numbered list of network requests since loading the page. Use browser_network_request with the number to get full details.

Returns full details (headers and body) of a single network request, or a single part if part is set. Use the number from browser_network_requests.

Run a Playwright code snippet. Unsafe: executes arbitrary JavaScript in the Playwright server process and is RCE-equivalent.

Take a screenshot of the current page. You can't perform actions based on the screenshot, use browser_snapshot for actions.

Capture accessibility snapshot of the current page, this is better than screenshot

Perform click on a web page

Perform drag and drop between two elements

Hover over element on page

Select an option in a dropdown

List, create, close, or select a browser tab.

Wait for text to appear or disappear or a specified time to pass