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DimensionJS Reverse MCPAn AI-agent-first MCP server for JavaScript reverse engineering and browser debugging.Playwright MCPMicrosoft's official Playwright-based browser automation MCP server
FMRS59 / 100 · C78 / 100 · B
Reliability10 / 2013 / 20
Security and permissions9 / 2012 / 20
Maintenance11 / 2018 / 20
Documentation15 / 2018 / 20
Setup experience14 / 2017 / 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.
  • 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
  • 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.
  • 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
  • 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.
  • 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 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.
  • 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 Code, Cursor, VS Code, CodexClaude Desktop, Claude Code, VS Code, Cursor, Windsurf, JetBrains IDEs, Zed, Cline, Amp, Kiro, LM Studio, Antigravity, Goose
Tools2410