Drive Claude Code sessions in Rex

Rex is a terminal multiplexer from Superlogical. Its rex CLI opens panes, types into them and reads their screens. Claude Code reports its state to Rex through the Program Status Protocol (OSC 7501): idle, working, done, blocked (with kind=permission, question or auth) and error. This skill uses that state to know when a child session has finished or needs someone, instead of guessing from the screen.

The helper script scripts/rex-claude.sh wraps the steps. Build its path from the "Base directory for this skill" line that Claude Code gives you when it loads this skill: ~/.claude/skills/rex-claude for a user install, or .claude/skills/rex-claude inside the project for a project install. Run it with bash, so it works even if the installer dropped the executable bit. Every command needs REX_SESSION, so run them from a Bash call inside Rex.

RC="<base directory>/scripts/rex-claude.sh"
bash "$RC" help

Requirements: you are running inside a Rex terminal (REX_SESSION and REX_BLOCK are set), and claude and jq are on PATH. For general Rex usage (tabs, layouts, other programs) run rex skill show, or install Rex's own skill with rex skill setup.

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