Disclosure: I work on Harness at Autonomous. hn is its terminal app. hn uses tmux 3.5a's keys and commands and reads your ~/.tmux.conf, but the sessions are coding agents (Claude Code, Codex, OpenCode and others) running on any of your machines. What's in the video: - Ctrl-b s: every agent on every machine - Ctrl-b A: answer the agents waiting on you, without opening them - Ctrl-b N: start a new agent - Ctrl-b g: type a task and let it pick the machine - Ctrl-b d: detach; the agents keep running How it works: each agent is a real tmux session (named harness-*) owned by a small daemon on that machine. Machines link with a password, with no SSH keys and no open ports, and terminal traffic is end-to-end encrypted. It works over SSH or from a tablet's SSH app. Limits, up front: - The daemon only manages panes it created. A claude you start by hand in your own tmux isn't picked up. - Other machines need Node 20+ and tmux. Code (MIT): https://github.com/autonomous-ai/openharness App and install: https://autonomous.ai/harness   submitted by   /u/deebuildsthings [link]   [comments]