The Left Shift (Jul 2026): summary of SpaceXAI Grok Build OSS announcement.

  • Source on GitHub for transparency and customization
  • Includes agent loop, tools, TUI (plan review, inline diff), extension system (skills, plugins, hooks, MCP, subagents)
  • Local-first: compile, point at local inference via config.toml
  • SpaceXAI social posts noted usage limit resets alongside OSS