Scalebrowser

Scalebrowser equips each AI agent with an independent browser with a persistent identity. Its official website states that it can maintain logins, handle verification codes, and input data like humans, with credentials never leaving the local machine. It can be accessed via MCP, SDK, or CDP, covering scenarios such as social media, e-commerce, and business accounts.

AI Agents#Isolation Configuration#persistent login#CAPTCHA handling

Updated: 2026-10-26

What is Scalebrowser?

The positioning of Scalebrowser's official website is "browsers for AI agents": providing each intelligent agent with an invariable machine. Its difference from temporarily launching a headless browser lies in identity — the official website states that the identity comes from the profile seed and persists every time the browser restarts; the site will see the same visitor tomorrow instead of a new device. Each profile has its own logins, cookies and device characteristics, which are not shared with each other; the GPU and screen take the real values of your local machine. A conflicting profile will refuse to start, and credentials or cookies will not leave your machine.

Who is it for?

Automation managers who need to run dozens of automated tasks each with its own independent login account
Teams engaged in multi-account operation of social media, marketplaces, and messaging platforms
Need to connect smart agents to transaction processes on websites without APIs
Already using browser-use and want every run to start from the logged-in state
Engineers who need step-by-step traces and screenshots for failure troubleshooting

Key features

Persistent Identity & Isolation

Identity is determined by the profile seed and retained across restarts; one browser corresponds to one profile, with logins, cookies, and device details all independent. The official website states that no data is shared between six profiles.

Login and Two-Factor Authentication

Passwords are encrypted and stored on the local disk, and filled into forms by the browser. The official website states that the AI agent cannot obtain the plaintext; each profile has its own email address, and verification codes arrive at the same location; the six-digit code is calculated within the profile, and the secret key is not leaked; the passkey remains valid after a crash or window closure.

CAPTCHA Solving

The official website states that it has solved 18 types of CAPTCHAs using real components rather than test keys, including long-press, image grid, slider, rotation, and voice-based CAPTCHAs.

Token-efficient page reading

The page is read once, and only the changed parts are fed to the model afterward; the official website states that about 29.16 US dollars are spent per 100 steps, and claims that it uses 9 times fewer tokens than Playwright MCP in 75 steps.

Execution Trajectory

Each tool call becomes a step with results and screenshots; even unresponsive clicks are recorded as separate entries for easy review.

Three access methods

MCP (HTTP or stdio) for Claude, Cursor or self-built agents, Python and Node SDK for direct connection to CDP, and an additional REST API; for those already using browser-use, the official website states that just one line of connection code can start the operation from the logged-in state.

How to use Scalebrowser

First run the official website's free detection to check your current detectability, then use the 7-day trial to verify the target site—do not launch mass production directly.
When connecting via MCP, first narrow the permissions to a single profile, confirm which actions the agent can trigger, and then expand the scope.
Store passwords and API keys only on your local machine and do not embed credentials in prompts.
the official website states that keys displayed on the page act as placeholders when passed to AI agents, and the stored passwords are only filled out on the corresponding websites.
Review the steps where "nothing happened" by checking the execution trace, set a step limit for each run, and control token usage.
Confirm the terms of service and real-name requirements of the target platform before batch multi-account operation to avoid account ban and compliance risks.