Awesome REA

REA or Craft Anything?

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Both projects give a coding agent reverse-engineering tools over MCP and a CLI, and both were among GitHub’s fastest-growing repos in autumn 2026. They answer different questions. REA explains how a program works and shows the evidence. Craft Anything takes a target and has an agent build your own version of it, then checks the build against the original.

Everything below comes from each project’s own README, read on 2026-11-09. Both change quickly, so check the sources before relying on a detail. Neither project mentions the other.

At a glance

	REA	Craft Anything
What you get	Findings with evidence and limitations; the agent decides what to do with them	A new project in app/, plus checks against the original and the evidence it collected
Workflow	Your agent asks, REA inspects and traces, the agent explains, implements and tests	Study → Build → Check → Ready, repeated until the build is close
Form	MCP server and CLI (npx rea-agents setup)	Desktop app (Simple and Advanced), CLI and MCP server; installers for Windows, macOS, Linux, FreeBSD
Written in	Node.js	Rust
Analysis engines	Uses your Hopper, Ghidra, IDA or Kuna for native code; JavaScript analysis needs none	Own decoders, disassembler and decompiler; uses Ghidra in Deep mode when installed
Targets	Native binaries, JavaScript/Electron, .NET, websites, and more	Native programs, .NET, Java, Android, Apple, Electron, websites, firmware, packet captures, databases, game files
Tool count	Generated catalog, not committed	About 320 (302 engine tools in 17 toolsets)
Agents	Claude Code, Codex, Cursor, Gemini CLI, Grok Build and others	Claude Code first; Copilot, Grok Build and other ACP agents partly verified
Default stance	Evidence-first analysis of what you point it at	Clean room: reads only what a visitor can see; Deep mode reads code and files
Maturity	Frequent releases (v5 went viral in October 2026)	Early alpha, created 2026-10-31
License	MIT	MIT or Apache-2.0
From	morluto	The ArtCraft team, who also publish the Craft apps

Which one fits

• You want to understand one feature, protocol or file format, then write the code yourself or with your agent: REA. It is built for targeted questions and returns evidence your agent can cite. The rea-lab studies suggest it pays off most on a known surface, not open-ended exploration.
• You want a working copy of a website, app or game in a stack you choose: Craft Anything. The build-and-compare loop is the part REA leaves to your agent.
• You care about legal exposure: Craft Anything’s default clean-room mode refuses tools that look inside the target. That is a rule about what it offers, not a sandbox, and its README says so. REA has no such mode; what you inspect is up to you. Neither project makes a rebuild legal, see Legal and controversy.
• You need a GUI: Craft Anything ships one. For REA, see the community marrow.

How this list tags them

A case is tagged REA only when its source says morluto/rea was used. A project built with Craft Anything is tagged AI-RE until enough of them appear to earn their own tag. If you built something with either tool, submit it.

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