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DimensionFortress MCP ServerStealth browser engine that lets AI agents fetch pages past Cloudflare/DataDome/CAPTCHA and extract clean data.FSB MCP ServerControl the FSB browser extension from any MCP client for DOM-first AI browser automation.
FMRS58 / 100 · C66 / 100 · C
Reliability7 / 2010 / 20
Security and permissions12 / 2014 / 20
Maintenance13 / 2015 / 20
Documentation14 / 2015 / 20
Setup experience12 / 2012 / 20
Best for
  • AI agents and browser automation projects that need to access heavily protected websites.
  • Developers who need clean, reproducible page extraction and site crawling.
  • Teams that value open-source and auditable stealth technology.
  • Developers who want AI clients to directly control the browser
  • Scenarios requiring DOM-level understanding and low-latency automation (50-200 ms)
  • Multi-client support (Claude Code, Cursor, VS Code, etc.)
  • Internal tools or automation scripts needing browser interaction
Not for
  • Use cases requiring strict compliance with website terms of service; stealth techniques may violate ToS.
  • Users needing multiple simultaneous personas or highly configurable fingerprints (current CLI limits one persona per launch).
  • Native binaries on macOS or ARM platforms; must run via Docker.
  • Headless browser or server-side monitoring
  • Bypassing website restrictions or unsupervised automation
  • Automation on sensitive pages without human supervision
  • Complex scenarios that require visual understanding (e.g., screenshots)
Required permissions
  • Launches a local Chromium browser process and exposes a CDP endpoint on a local port (e.g., 9222).
  • Assumes full control of the browser via MCP tool calls: navigation, clicks, typing, etc.
  • May access localhost or private IPs, but is SSRF-guarded by default; set TILION_ALLOW_PRIVATE_EGRESS=1 to allow.
  • Requires installing the Chrome extension, which requests permissions for active tab, debugger, storage, etc.
  • MCP server needs to connect to the extension via WebSocket (default ws://localhost:7225)
  • Optional Streamable HTTP mode requires allowing connections to http://127.0.0.1:7226/mcp
  • Uploading files requires providing absolute local paths
Risks and side effects
  • Use of stealth techniques may violate website terms of service and carry legal risks.
  • Even with fingerprint correction, advanced detection can still flag the browser, especially with datacenter IPs.
  • The browser process consumes CPU and memory; concurrent sessions may impact system performance.
  • Browser automation can be unpredictable on complex or sensitive sites; supervision is required
  • Credentials and payment info are stored in a vault but require user unlock flows
  • API keys are encrypted in Chrome storage, but clients may send page context to model providers
  • MCP server is a local process, posing local security risks
  • Capability catalog allows most non-denied origins but is gated by multiple checks
Supported clientsClaude Desktop, Claude Code, CursorClaude Desktop, Claude Code, Cursor, VS Code, Windsurf, Codex
Tools2130