How To Use REA Legally (What It Can Rebuild and What It Can't)

Original author：Blake AI Search

Original source：https://www.youtube.com/embed/VO9gk0v4fL0

Your first click in Windows XP Minesweeper is never a mine, because the game quietly moves it. An AI agent worked that out from the game's machine code, and that kind of trick is what the "clone any app" videos are built on. I go through what REA really does (it lets Claude Code, Codex, Cursor or Gemini CLI drive Ghidra, Hopper or IDA), three cases from the project's own demos (one Windows Calculator key, the code in your authenticator app, a game from 1996), an independent test of the same agent with and without REA, and where the legal line sits in the EU and the US. My rule: when REA is worth the tokens, and when your plain agent is enough. Chapters 0:00 The mine moves 0:47 No source needed 1:46 Three cases 3:37 The duel 5:08 Can you clone it? 6:55 Your first case 7:59 My rule Numbers checked on 13 Oct 2026. The Calculator, Aegis and DX-Ball results are the project's own showcases. The scores, token use and the Minesweeper answer come from GitTested's review of rea-agents 6.2.0 with Claude Code and Sonnet 5.5 at medium effort, on four small stripped programs. The legal part quotes the rules themselves. It is not legal advice for your case, and your country and your license can change the answer. Sources REA on GitHub (MIT license): https://github.com/morluto/rea REA site and Calculator demo: https://rea.tools/ REA disclaimer and acceptable use: https://github.com/morluto/rea/blob/main/DISCLAIMER.md Aegis showcase: https://rea.tools/showcase/aegis/ RFC 6238, how authenticator codes work (TOTP): https://datatracker.ietf.org/doc/html/rfc6238 DX-Ball showcase: https://rea.tools/showcase/dx-ball/ JavaScript beginner guide: https://rea.tools/guides/javascript/ GitTested review of REA: https://gittested.com/reviews/morluto-rea/ Ghidra, NSA Research Directorate: https://github.com/NationalSecurityAgency/ghidra EU Software Directive 2009/24/EC: https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32009L0024 EU Court of Justice, SAS Institute v World Programming (C-406/10): https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:62010CJ0406 US Code, 17 U.S.C. §1201: https://www.law.cornell.edu/uscode/text/17/1201