Install
via Positronick CLI
$positronick cli install herdr --run
Official
$brew install herdr
herdr is a terminal multiplexer built for coding agents. Like tmux it splits your terminal into panes and windows, but it is agent-aware: it surfaces the live state of the agent running in each pane (Claude Code, Codex, and others) so you can herd a fleet of agents from one terminal. Written in Rust, available in Homebrew core, with a plugin marketplace at herdr.dev/plugins. Dual-licensed (AGPL-3.0-or-later / commercial).