JSReverser-MCP JavaScript Reverse Engineering

Skill by ara.so — MCP Skills collection.

JSReverser-MCP is a specialized MCP server for JavaScript reverse engineering that operates in real browser environments. It helps locate frontend core logic by integrating script retrieval, breakpoint debugging, function hooking, network request tracing, call chain analysis, deobfuscation, and risk assessment into unified MCP tools. Perfect for API analysis, security research, frontend debugging, and understanding encrypted/signed request parameters.

Core Methodology

The project follows these principles:

1. Observe-first: Confirm requests, scripts, functions in browser before intervention
2. Hook-preferred: Use minimal hooks for runtime sampling before breakpoints
3. Breakpoint-last: Only pause execution when hooks are insufficient
4. Rebuild-oriented: Export evidence and reconstruct in Node.js environment
5. Evidence-first: Record all findings as task artifacts, not just in conversation
6. Pure-extraction-after-pass: Extract pure algorithm only after environment passes

Installation