Holdpty

Launch commands in a real pseudo-terminal, detach, reattach later. Like a minimal screen or tmux, but cross-platform — named pipes on Windows, Unix sockets everywhere else.

Born from a specific need: AI agents that launch long-running processes need to detach from them and check back later. The existing tools (screen, tmux) are Unix-only and heavyweight. Holdpty is a single npm package that works on Windows, macOS, and Linux, with a pi skill that teaches agents how to use it.

Supports logs --tail/--follow, session replay, Ctrl+A detach in attached mode, and PowerShell compatibility. Published to npm as holdpty.