getting-started · 3

Getting started

Identify unknown files with magic bytes and file(1), or install REA and connect its MCP server to Claude Code, Cursor or Codex for deeper analysis. Guides cover file identification, setup and a first analysis, plus checking that the rea-agents package you install is the genuine npm release.

• Identify a File Type Without an Extension: Magic Bytes List and Tools

  Identify a file with no extension from its first bytes with file, xxd or Format-Hex, split ZIP formats like APK and NuGet, and open each in the right tool.

  7 min read

• Is REA Safe? The Real Reverse Engineer Anything GitHub Repo vs Fakes

  Confirm you install the genuine REA: the official GitHub repo and npm package, npm view checks, provenance via npm audit signatures, and where to report fakes.

  9 min read · REA 6.7.0

• REA MCP Setup: Install rea-agents for Claude Code, Cursor and Codex

  Install REA with npx rea-agents setup: Node requirements, the pinned MCP registration, --client and --dry-run, updating, rea doctor, and a first analysis.

  9 min read · REA 6.7.0