About NexaDuo/mARC
mARC (Multi-Agent Relay Control) packages a full software-delivery agent team, dressed in a retro/vaporwave IRC console aesthetic. Rather than building separate agent systems for every platform, mARC defines a single core team in core/ and compiles it into plugins for different developer tools, which we call harnesses. Today, mARC ships four harnesses: Claude Code, OpenAI Codex, Google Antigravity, and GitHub Copilot CLI. It relies on the host tool to run and isolate subagents, providing a consistent team that you install once and reuse across your projects.