Lightweight Reverse-Engineering Skill Outpaces Full MCP Server With 38% Speed Gain

An 8-kilobyte skill file deployed this week challenges a 25-megabyte MCP server that claims to reverse-engineer any application, delivering measurable speed and cost improvements on practical tasks. Dubbed leanrea, the new tool strips away the complexity of REA (Reverse Engineer Anything), a widely adopted framework that exposes 207 integrated tools to AI agents. Instead, leanrea embeds a decision table that routes agents toward native shell commands for each file type—asar for Electron apps, otool and nm for Mach-O binaries, go version for compiled Go tools, and similar utilities for Android APKs, WebAssembly, and minified JavaScript.