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DimensionFSB MCP ServerControl the FSB browser extension from any MCP client for DOM-first AI browser automation.Playwright MCPMicrosoft's official Playwright-based browser automation MCP server
FMRS66 / 100 · C78 / 100 · B
Reliability10 / 2013 / 20
Security and permissions14 / 2012 / 20
Maintenance15 / 2018 / 20
Documentation15 / 2018 / 20
Setup experience12 / 2017 / 20
Best for
  • 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
  • Scenarios where an AI assistant needs to actually drive a browser to complete a task
  • Web automation testing and end-to-end verification
Not for
  • 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)
  • Simple static-text scraping (a lightweight scraper is a better fit)
  • Environments sensitive to browser resource usage that can't run a full browser engine
Required permissions
  • 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
  • Requires installing and running a browser engine (Chromium/Firefox/WebKit) locally or on a server
  • browser_navigate can visit any URL; browser_evaluate can run arbitrary JavaScript in the page context
Risks and side effects
  • 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
  • browser_evaluate executing arbitrary scripts carries risk if a malicious page is visited — restrict to trusted sites or an isolated environment
  • Long-running browser instances consume significant memory and CPU
Supported clientsClaude Desktop, Claude Code, Cursor, VS Code, Windsurf, CodexClaude Desktop, Claude Code, VS Code, Cursor, Windsurf, JetBrains IDEs, Zed, Cline, Amp, Kiro, LM Studio, Antigravity, Goose
Tools3010