REA (Reverse Engineer Anything) is an open-source MCP server and CLI that lets coding agents investigate applications without their source code.
It inspects native binaries, JavaScript and Electron apps, .NET assemblies, Android APKs and websites, explains how a feature works with the evidence behind each conclusion, and helps the agent build a similar feature for your project.
- 01
Native Mach-O, ELF and PE analysis through Hopper or Ghidra: functions, pseudocode, strings, calls and references
- 02
Investigation workflows for app overviews, feature traces, call graphs and Swift/Objective-C discovery
- 03
Electron, JavaScript, .NET, Android APK, firmware and browser-observation tool families
- 04
Guided `npx rea-agents setup` for Claude Code, Codex, Cursor, Gemini CLI, Windsurf, Devin, OpenCode and more
- 05
Local-only analysis with results that state their evidence and limitations
Free
REA is free and open source under the MIT license and runs locally; native analysis can use an existing Ghidra install or Hopper, which has a demo mode and paid licenses from its vendor.
Best for
Developers who want their coding agent to understand how an existing app or feature works at the binary level before building their own version.
Not ideal for
Windows-hosted analysis or users expecting recovery of original source code or automatic app cloning, which REA explicitly does not claim.
A capable, evidence-first bridge between coding agents and real reverse-engineering tooling.
rea-agents 4.0.1 was released on October 5, 2026, and REA topped GitHub Trending's daily list in early October 2026.
As of
Is REA free?+
Yes - REA is Free. REA is free and open source under the MIT license and runs locally; native analysis can use an existing Ghidra install or Hopper, which has a demo mode and paid licenses from its vendor.
Is REA open source?+
Yes - REA is open source. REA is free and open source under the MIT license and runs locally; native analysis can use an existing Ghidra install or Hopper, which has a demo mode and paid licenses from its vendor.
Who is REA best for?+
Developers who want their coding agent to understand how an existing app or feature works at the binary level before building their own version.
Who is REA not ideal for?+
Windows-hosted analysis or users expecting recovery of original source code or automatic app cloning, which REA explicitly does not claim.
What are the best REA alternatives?+
The closest REA alternatives on ai.dosa.dev are Pieces for Developers, agenttrace, Vibe Kanban - all listed under Developer Productivity & Workflow.
Who makes REA?+
REA is developed by morluto. It is listed in the Developer Productivity & Workflow category on ai.dosa.dev.
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