aru

Aru is a command-line tool that keeps instructions, Agent Skills, and MCP server configurations synchronized across multiple coding agents like Claude Code, GitHub Copilot, Codex, and others. It maintains a single project manifest and lockfile, ensuring every agent on your team uses consistent settings without duplicating setup work.

The tool separates declared configuration from locked state, validates changes before applying them, and detects drift in unmanaged content. It supports full project adapters for agents with broad capabilities, native instruction adapters, and skill-only targets for specialized tools. The maker built it in Rust.