REA: Let Your AI Agent Reverse Engineer the App Features You Wish You Had

REA is a new open-source tool designed to simplify the reverse engineering process by delegating tasks to AI coding agents. By functioning as both a CLI and an MCP server, REA allows developers to point an AI agent at an application to investigate how specific features work. The tool follows a three-stage workflow: decompiling the binary, understanding the code logic, and recreating the functionality within the user's own stack. It supports various formats, including native binaries, Electron apps, and web-based interfaces. While it requires deep-analysis providers like Hopper or Ghidra, REA provides a structured way to gather evidence and document undocumented protocols or interfaces. By focusing on local execution and safety, it enables developers to learn from existing software without needing to master complex, manual reverse engineering techniques. REA is currently available on GitHub and supports macOS and Linux environments.