Scalebrowser

Scalebrowser is a Windows browser infrastructure tool for developers and automation teams running AI agents across websites and accounts. Each profile keeps its own device identity, cookies, logins, and session state between runs. Profiles are isolated from one another, and the browser engine can be pinned to a version, verified, or rolled back. Agents can connect over MCP using HTTP or stdio, Python and Node SDKs, a REST API, or direct CDP. Scalebrowser supports stored logins, passkeys, confirmation-code inboxes, two-factor codes, permission prompts, and captcha handling. Passwords are encrypted on disk and typed into their relevant sites without exposing their values to the agent. Run trails record tool calls, results, and screenshots. The desktop app runs on Windows 10 or 11 and requires a real GPU to launch profiles. The free plan supports one browser at a time on one machine, with three profiles and three workflows. Paid plans increase those limits, while enterprise arrangements offer custom browser and machine allowances.