---
title: "REA가 정말 필요할까? Reverse Engineer Anything과 Claude Code 단독 사용을 테스트해봤다"
url: "https://reamcp.dev/ko/cases/do-you-even-need-rea-i-tested-reverse-engineer-anything-vs-c-3a6bd9"
source: "https://www.youtube.com/watch?v=mblE4k78BCg"
source_type: "resource"
author: "Aqib Mehmood"
author_handle: "thisisaqibmehmood"
stars: 0
category: "도구 및 연동"
categories: ["tools-integrations"]
tags: ["app-recreation", "benchmark", "claude-code", "mcp", "windows"]
added: "2026-10-15T02:15:28.471Z"
updated: "2026-10-14T16:35:22.000Z"
locale: "ko"
content_locale: "ko"
---

# REA가 정말 필요할까? Reverse Engineer Anything과 Claude Code 단독 사용을 테스트해봤다

한 개발자가 자신의 컴파일된 프로덕션 앱을 Claude Code만으로 재구성하고, 다시 REA(rea-agents 6.4.0)를 MCP 서버로 사용하여 재구성한 후, 8개의 숨겨진 비즈니스 규칙에 대해 두 가지를 모두 채점했습니다. 그는 시간과 비용 결과, 채점 방법론, MCP 콜드 스타트 타임아웃을 포함한 Windows 설정 팁을 공유합니다.

## Description

이 비디오는 컴파일된 빌드(소스 없음, 소스 맵 없음, .git 없음)에서 앱을 재구성할 때 REA가 Claude Code 단독 사용보다 가치를 더하는지 테스트합니다. 두 실행 모두 숨겨진 규칙에서 8/8을 받았지만, REA는 16분 46초, Claude Code 단독은 40분 27초가 걸렸으며 API 환산 비용은 약간 더 높았습니다. REA가 무엇인지, 가짜 REA 저장소에 대한 경고, Windows 설정 문제(MCP 콜드 스타트 35.5초 vs Claude Code의 30초 대기, MCP_TIMEOUT=120000 제안), 숨겨진 규칙이 어떻게 선택되었는지, 사용된 프롬프트, 스코어카드, 비용/속도 요점, 그리고 소유하거나 검사 권한이 있는 소프트웨어만 분석해야 한다는 합법성 부분을 다룹니다. 공식 저장소(github.com/morluto/rea)만 권장됩니다.

## Original README

Do You Even Need REA? I Tested Reverse Engineer Anything vs Claude Code Alone

I gave Claude Code only the compiled production build of my app Shiftwire, with no source code, no source maps and no .git, and asked it to rebuild the whole thing. I ran it twice on the same build: once on its own and once with REA (Reverse Engineer Anything, rea-agents 6.4.0) connected as an MCP server. Both rebuilds were scored against the real source on 8 hidden business rules. Without REA: 8/8 in 40m 27s of Claude working time, $10.52 API-equivalent. With REA: 8/8 in 16m 46s, $12.45. Neither run flagged the overnight AM/PM bug in my app. One app and one run each, so treat the speed difference as a hint.

Two ideas worth stealing. Score a rebuild against rules hidden in the real code, like a setting that never fires or an opt-out list, because matching screens proves very little. And on Windows, REA's MCP server took 35.5 seconds to start cold while Claude Code waits 30, so start it once first or set MCP_TIMEOUT=120000 before you launch claude.

Only download REA from the official repo: https://github.com/morluto/rea
Lookalike repos exist. Do not run them.

Tested on my own app. Not legal advice. Only analyze software you own or are authorized to examine.

I build AI systems like this for service businesses: voice agents, automations, internal tools. Book a call: https://thisisaqib.com

Chapters:
00:00 The test: rebuild my app from compiled code
00:31 What REA is
01:10 Fake REA repos
01:40 Setup on Windows, and what broke
02:41 The hidden rules
03:40 The prompt
03:50 Round 1: without REA
05:05 Round 2: with REA
06:22 The scorecard
07:45 What REA changed: speed and cost
08:53 Is this legal?
09:35 Verdict
10:13 Outro