Grok Build Beta is a command-line tool from xAI that adds a native subagent view, Plan Mode integration, mouse support, and a fullscreen terminal UI for managing Grok-based projects.

It can edit project files (such as validating cart totals before Stripe charges) and supports interactive commands like side questions and UI polish helpers. Install it via curl -fsSL https://x.ai/cli/install.sh | bash.