Full Self-Browsing
AI-powered browser automation through natural language. Tell it what to do, and watch it browse for you.
Built for the Modern Web
Everything you need for intelligent browser automation, powered by leading AI models.
Multi-Model AI
6 built-in providers, 20+ cloud models, plus local model discovery. Choose from xAI Grok, OpenAI GPT, Anthropic Claude, Google Gemini, OpenRouter, or LM Studio.
Natural Language
No scripting required. Describe your task in plain English and FSB figures out the clicks, types, and navigations.
50+ Browser Actions
Click, type, scroll, drag-and-drop, canvas drawing, CDP mouse control, multi-tab management, and more.
Smart DOM Analysis
Incremental DOM diffing, multi-strategy selectors, and element identification for reliable automation.
Visual Feedback
Viewport glow borders, element highlighting with orange pulse, and a floating progress overlay show exactly what FSB is doing.
Site Intelligence
142+ built-in site guides spanning e-commerce, finance, social media, travel, career, coding, and productivity platforms.
MCP Integration
Use FSB as an MCP server from Claude Code, Codex, Cursor, OpenClaw, or any MCP client. Automate browsers directly from your IDE.
Remote Dashboard
Monitor and control FSB from any device. QR-code pairing, live DOM preview, and real-time task execution.
Memory & Learning
FSB remembers navigation patterns across sites. Semantic, episodic, and procedural memory for smarter automation over time.
Better Than All of Them. Without Vision.
Project Mariner, Claude Computer Use, OpenAI Operator, OpenClaw. They all rely on vision to understand the page. FSB reads the actual DOM. No vision needed. Faster. Cheaper. More accurate.

Project Mariner
Vision
Computer Use
VisionOperator
VisionOpenClaw
VisionFSB
DOM-BasedBetter than all of them. Pure structural intelligence. Zero vision. Zero guessing.
Works WITH All of Them
FSB does not just compete. It complements. Through its MCP server, Claude Code, Codex, Cursor, Windsurf, and any MCP-compatible agent can use FSB as their browser automation layer. The intelligence of any AI combined with the precision of FSB's DOM engine.
How It Works
Three simple steps from instruction to completion.
Describe Your Task
Type a natural language instruction into the FSB chat panel. "Book a flight from SF to NYC" or "Find the cheapest laptop on Amazon."
FSB Analyzes & Acts
FSB reads the page, plans actions, and executes them. Clicking, typing, scrolling, and navigating as needed.
Task Complete
FSB verifies the result, reports back in the chat, and gives you a summary. Review the outcome and iterate if needed.
Choose Your AI Provider
Works with the leading AI platforms. Bring your own API key or connect LM Studio locally.
xAI Grok
Grok 4.1, Grok 4.1 Fast, Grok Code Fast
OpenAI
GPT-4o, GPT-4o Mini, GPT-4 Turbo
Anthropic
Claude Sonnet 4.5, Haiku 4.5, Opus 4.1
Google Gemini
2.5 Flash, 2.5 Pro, 2.0 Flash (FREE)
OpenRouter
200+ models through a single API key
LM Studio
Local models, no API key, live discovery from /v1/models
Start from FREE with Gemini 2.0 Flash, or run fully local with LM Studio and no API key.
Open Source. BSL 1.1 Licensed. Built for Everyone.
FSB is free and open source. Inspect the code, contribute features, or fork it for your own use.
View on GitHub