Multi-agent-shogun is a developer tool for running multiple AI coding agents simultaneously using tmux sessions. It implements a feudal hierarchy where a shogun (user interface) commands karo (manager) and ashigaru (worker) agents. The system supports Claude Code, OpenAI Codex, GitHub Copilot, Kimi Code, and OpenCode. Natural language commands in the shogun pane trigger coordinated parallel execution across all agents with zero coordination overhead.