xai-org/grok-build, now open source

This article covers the controversy and subsequent open-sourcing of xAI's Grok Build tool. After severe community backlash over the CLI tool uploading entire directories (including SSH keys and password databases) to xAI's cloud, the company disabled the feature, deleted retained data, and released the entire codebase under an Apache 2.0 license. The codebase contains 844,530 lines of Rust, with highlights including system prompts, a Mermaid diagram terminal renderer, and tool implementations ported from Codex and OpenCode. The article provides technical details about the repository structure and notes the subagent prompt's unusual instruction not to reveal its contents.