tui2web
A free, open-source tool that puts a running terminal session, such as Claude Code or Codex, onto your phone through a private encrypted link so you can check in and reply from anywhere.
tui2web streams a terminal command you are running, such as Claude Code, Codex, opencode, or a plain shell, to a private web page. Installed with npm or run directly without installing, it wraps a command, then prints a private link and a QR code; opening that link on a phone mirrors the same screen the computer shows, with the extra keys, like Esc, Tab, Ctrl, and arrows, that a phone keyboard is missing.
Keystrokes from either device go to the same session, and the display resizes to whichever device was used last, so a person can start a coding agent, walk away, and answer its questions or approve steps from a phone. With an optional private-relay mode, traffic never passes through the project's own servers; the computer runs the relay itself and only devices on that network can open the link.
It works over any network, since the computer connects outward to a relay rather than opening an inbound port, and supports an optional password and encrypted connections.