Claude Code, Codex, OpenCode and similar tools run in a terminal for minutes or hours. Checking on such a session from a phone through an ordinary web terminal is miserable: the keyboard fights the TUI, autocorrect mangles prompts, there is no scrolling, and all sessions look the same. I built thumbmux, a mobile web interface for your own tmux: a tab per session, a normal text field, swipe scrolling, photo and file upload. What I think matters most isn't the interface but that the terminal is behind a password and listens on no open port.

A caveat up front: the interface was designed for iOS Safari. It works in desktop browsers, but I haven't poked at it there. The Docker image and the VPN compose file were not tested on the build machine, because it has no Docker.…