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DimensionJS Reverse MCPAn AI-agent-first MCP server for JavaScript reverse engineering and browser debugging.Playwright MCP ServerPlaywright-based browser automation MCP server
FMRS59 / 100 · C66 / 100 · C
Reliability10 / 209 / 20
Security and permissions9 / 2011 / 20
Maintenance11 / 2015 / 20
Documentation15 / 2017 / 20
Setup experience14 / 2014 / 20
Best for
  • Developers who need an AI agent to carry out a continuous JavaScript reverse-engineering workflow.
  • Analysis tasks requiring a headed browser, persistent login state, and replayable local artifacts.
  • Research involving relationships among scripts, breakpoints, network traffic, and WebSockets.
  • Developers who need browser automation from Claude Desktop, VS Code, and similar clients
  • Users doing web testing and scraping
Not for
  • Generic browsing or simple automation that does not require reverse-engineering capabilities.
  • Users seeking a general-purpose scraping framework or a guarantee of bypassing every site defense.
  • Sensitive environments where the MCP client must not access browser content or host files.
  • Environments requiring strict sandboxing that disallow AI-controlled browsers
  • Claude Desktop users needing HTTP/SSE mode (Claude Desktop currently requires stdio mode)
Required permissions
  • It can inspect, debug, and modify data in the browser.
  • evaluate_script.localFilePath and outputFile/filePath parameters can make the MCP process read or write host files.
  • Without --allowedRoots, local-file access is unrestricted; the option can constrain permitted directories.
  • The default profile persists cookies and localStorage; --isolated uses a temporary profile.
  • Runs real browsers (Chromium, Firefox, WebKit) locally
  • Automatically downloads and installs browser binaries on first use
  • Writes log files to ~/playwright-mcp-server.log
  • Binds a local port in HTTP mode (default 8931)
Risks and side effects
  • Browser contents are exposed to the MCP client; do not use it on pages containing sensitive information.
  • Unrestricted local-file access may expose or modify host files.
  • Verbose debugging logs may reveal pages, cookies, scripts, or credentials; the README advises against DEBUG=* .
  • With --cloak, first launch may silently download about 200 MB, and its profile is physically separate from the default profile.
  • AI can execute JavaScript in a real browser, potentially accessing and manipulating sensitive web content
  • Automatic browser downloads consume disk space and bandwidth
  • HTTP mode binds to localhost only; exposing it via SSH tunnels still requires caution
Supported clientsClaude Code, Cursor, VS Code, CodexClaude Desktop, Claude Code, Cline, Cursor, VS Code
Tools241