Gumpbox is a native Mac, iPhone, and iPad app for Linux servers—and a localhost MCP bridge for every AI workspace. Claude, Codex, Cline, VS Code, and other MCP agents work without receiving private keys; credentials stay in Keychain. Agent headless commands can use systemd-run isolation presets, while interactive Terminal Use stays visible. Add consented file transfers, Docker + gVisor sandboxes, SSH, SFTP, tunnels, monitoring, and workflows.