Auto Browser MCP Server by LvcidPsyche: Setup for Claude Code, Codex and Cursor

• Opens a new browser window the assistant can control

  Starts a fresh browser session, and can go straight to a start page. It can also load a saved login or a memory profile so the session starts signed in.

  Try: “Open a browser on our staging dashboard.”

  Write · browser.create_session

• Lists your open and past browser sessions

  Shows each session with its name, status, current page and the link for taking over by hand.

  Try: “Which browser sessions do I have open?”

  Read · browser.list_sessions

• Shows full details for one browser session

  Returns the record for one session, including its status, current page and tabs while it is live.

  Try: “Show me what session abc is doing right now.”

  Read · browser.get_session

• Copies a session with its login into a new one

  Takes a snapshot of a session's cookies, stored data and page, then opens a new independent session from it.

  Try: “Make a copy of this logged-in session so I can try a second flow.”

  Write · browser.fork_session

• Reads the current page: buttons, links, text and a screenshot

  Returns a view of the open page with the clickable elements, open tabs, console messages and a summary. Presets let you ask for text only to keep it light.

  Try: “What is on the page right now?”

  Read · browser.observe

• Takes a picture of what the browser shows

  Captures the visible part of the page as an image, without the full observation data.

  Try: “Take a screenshot of the checkout page.”

  Read · browser.screenshot

• Reads the page source or just its visible text

  Returns the whole document, or only the visible text if you ask for that, so the assistant can read content outside the viewport.

  Try: “Get the text of this article.”

  Read · browser.get_html

• Finds things on the page by CSS selector or by text

  Searches the page for matching elements and returns them, either by selector or by a text or pattern match across the page.

  Try: “Find every link on this page that mentions pricing.”

  Read · browser.find_elements

• Clicks, types, scrolls or goes to a page

  Performs one browser action such as navigate, click, hover, type, press a key, choose an option or scroll. Actions are checked against the rules and logged, and some need an approval first.

  Try: “Log in with the saved profile and click Export.”

  Write · browser.execute_action

• Asks you to take over the browser by hand

  Flags the session so a person can step in through the live desktop view, for example to solve a login step.

  Try: “I am stuck at the sign-in step, ask me to take over.”

  Write · browser.request_human_takeover

• Closes a browser session and saves its records

  Ends the session and finalises its trace and files.

  Try: “Close the browser session when you are done.”

  Write · browser.close_session

• Lists the tabs open in a session

  Returns each open tab in the session by index.

  Try: “What tabs are open?”

  Read · browser.list_tabs

• Switches to another tab

  Brings one tab to the front so later reads and actions apply to it.

  Try: “Switch to the second tab.”

  Write · browser.activate_tab

• Closes one tab

  Closes the tab at the given index when more than one tab is open.

  Try: “Close the pricing tab.”

  Write · browser.close_tab

• Lists files the browser downloaded

  Shows the files captured from downloads in one session.

  Try: “What files did that export download?”

  Files · browser.list_downloads

• Reads a downloaded file as text

  Opens a downloaded CSV, JSON, text or HTML file and returns its contents. Without an id it reads the latest download.

  Try: “Read the CSV that just downloaded.”

  Files · browser.read_download

• Lists saved logins you can reuse

  Shows the named login profiles that a new session can start from.

  Try: “Which saved logins do I have?”

  Read · browser.list_auth_profiles

• Saves the current login for reuse

  Stores the session's cookies and storage under a name so later sessions open already signed in.

  Try: “Save this session as my admin profile.”

  Write · browser.save_auth_profile

• Waits until something appears or disappears on the page

  Pauses until a CSS selector is visible, hidden, attached or detached, then returns.

  Try: “Wait until the results table has loaded.”

  Read · browser.wait_for_selector

• Runs a JavaScript snippet on the current page

  Runs one JavaScript expression in the page and returns the result. Each call needs an operator's approval for that exact expression before it runs.

  Try: “Run a script to count the rows in the table.”

  Runs code · browser.eval_js

• Finds a button or field by describing it

  Uses Claude Vision on a screenshot to locate an element from a plain description and returns its coordinates for a click.

  Try: “Find the blue Submit button.”

  Network · browser.find_by_vision

Watch out for

• It acts as you on signed-in sites

  browser.execute_action can click, type and submit in any session with a saved login. Use throwaway or low-privilege accounts, and keep ALLOWED_HOSTS short. github.com

• Saved logins sit on disk

  browser.save_auth_profile writes cookies and storage to the controller data folder. Treat that folder like a password store. github.com

• No password on the controller by default

  API_BEARER_TOKEN is empty in the sample settings. Ports are published on 127.0.0.1 only, but set a token before sharing the machine or opening ports. github.com

• The full tool set includes delete tools

  MCP_TOOL_PROFILE=full also serves tools that delete memory profiles, proxy personas and cron jobs. The default curated profile does not include them. github.com

• JavaScript needs your approval each time

  browser.eval_js returns an approval request and waits. Setting AUTONOMOUS_APPROVALS=true lets the agent approve its own requests, so leave it false. github.com

Security advisories