This is a proper multi-agent orchestration system built on Claude Code's TeammateTool primitives. You get teams with leaders and teammates, task dependencies, message passing through JSON inboxes, and automatic backend detection that spawns agents in tmux panes or iTerm splits depending on your environment. The primitives are well thought out: agents, teams, tasks, and structured messaging all stored as config files in ~/.claude. If you're building anything that needs multiple Claude instances coordinating work, like parallel research tasks or complex builds with dependencies, this gives you the plumbing instead of hacking together your own IPC. The 19k GitHub stars suggest the parent repo (compound-engineering-plugin) has real traction, though Snyk flagged a warning worth checking.
npx skills add https://github.com/everyinc/compound-engineering-plugin --skill orchestrating-swarms