JSReverser-MCP

Why we included this project

JSReverser-MCP is an MCP server that lets you drive a real Chrome session from Claude, Codex, or Cursor to reverse engineer a page's frontend JavaScript. Rather than bouncing between DevTools and an editor, you list the scripts a page has loaded, search their source, set breakpoints by text, and hook functions to capture the arguments and return values, then follow the call chain back to the network request you actually care about. The project has a clear methodology: observe first, hook as little as possible, rebuild the logic locally in Node, and store every step as a task artifact so the findings don't die with the chat session. Public parameter blueprints already cover signature schemes like JD's h5st, Kuaishou's falcon, and Douyin's a-bogus, and it also does automated page actions and structured report export. For teams doing interface analysis, frontend debugging, or security research, that adds up to a repeatable reverse-engineering workflow instead of an ad hoc scramble.