Create a new browser session and optionally navigate to a start URL.

List live and persisted browser sessions, one reference each (id, name, status, live, current page, takeover URL). browser.get_session returns a full record.

Get the full record for one browser session by ID: the live session summary (status, current page, tabs) when the session is active, or the persisted session record when it has been closed. Use browser.list_sessions to discover session IDs.

Capture the current browser observation: interactables, tabs, console, and a perception summary. Presets: 'text' — no screenshot or OCR: interactables, accessibility tree and the first 2,000 characters of page text; for text-only models. 'fast' — screenshot only, returned as an image, no text/accessibility extraction; for vision models. 'normal' (default) — text plus a screenshot URL and OCR. 'rich' — normal with twice the interactables and 4,000 characters of text. To read a whole page, use browser.get_html with text_only=true. On Chrome's error page for a navigation the pre-request gate stopped, blocked_navigation says what was stopped and why.

Capture the current viewport and return it as an image (plus its artifact URL), without the full observe payload.

List reusable saved auth profiles that can be loaded into a new session.

List files captured from browser downloads for one session.

Read a downloaded file as text (CSV, JSON, TXT, HTML, ...), by download_id from browser.list_downloads or, if omitted, the latest completed download. Paged like browser.get_html. Binary files (PDF, XLSX, images) are refused with their artifact URL.

List currently open tabs/pages for one session.

Bring one tab to the foreground so subsequent observations and actions target it. Tab indexes come from browser.list_tabs. Returns the activated index, the updated session summary, and the current tab list.

Close one tab index if more than one tab is open.

Execute one browser action (navigate, click, hover, type, press, select_option, scroll, …) in a session, using the same action schema the agent planner emits. Actions are policy-checked and audited, and governed actions may require a granted approval_id. Call browser.observe first to get targetable element IDs and selectors. Returns the action's verification (what changed) and an observation of the page after it (up to 20 interactables).

Save the current session storage state into a reusable named auth profile.

Ask for a human to take over the shared browser desktop.

Close a session and finalize its trace/artifacts.

Fork a session: snapshot its cookies, storage state, and current URL, then create a new independent session with that state. Useful for branching workflows or running parallel variants. Refused without start_url while the page is Chrome's error page for a stopped navigation.

Execute a JavaScript expression in the current page context and return the result. Every call needs operator approval for that exact expression: the first call returns status approval_required with an approval_id; retry with approval_id once it is approved. Prefer find_elements, get_html or observe for reading the page — they need no approval.

Wait for a CSS selector to reach a specific state (visible, hidden, attached, detached). Returns when the condition is met or raises on timeout.

Read the current page: its serialized DOM (the whole document, not just the viewport), or with text_only=true its visible text — the cheapest way to read a page's content. Returns up to max_chars (default 20,000) from offset; when truncated is true, call again with offset=next_offset for the rest. On Chrome's error page for a navigation the pre-request gate stopped, blocked_navigation says what was stopped and why.

Find elements either by CSS selector or by a text/regex query across the page's text content. selector mode returns matching elements' text, href, value, bounding box, and visibility -- useful before clicking or scraping multiple items. query mode (set query, optionally regex and context) returns the matched text plus surrounding context for each hit -- a cheap way to locate a specific string on the page without a full observe.