FSB (Full Self Browsing)
An open-source Chrome extension that reads a page's DOM to plan and carry out browser automation from a plain-English instruction, for interactive use and MCP clients.
FSB, or Full Self Browsing, is a Chrome extension for AI-driven browser automation. Given a task described in plain English, it reads the live DOM, builds a plan, executes browser actions such as clicks and form fills, verifies the results, and reports progress through its popup, side panel, or an MCP server.
Rather than relying on screenshots the way vision-based browser agents do, FSB works directly from page structure, selectors, ARIA attributes, and forms, which the project reports gives lower per-step latency and access to elements hidden from a purely visual view. It can be installed as an MCP server for clients such as Claude Code, Claude Desktop, Cursor, VS Code, Windsurf, and Codex with a single command, alongside the browser extension itself from the Chrome Web Store. It is intended for supervised use, with monitoring recommended on complex or sensitive sites.