Grok Build

When xAI open sourced its coding agent harness in July 2026 under Apache 2.0, it published the same grok CLI that drives Grok's agentic coding stack rather than a cut-down demo: a roughly one million line Rust workspace synced periodically from the company's internal monorepo. The agent runs as a fullscreen, mouse-interactive terminal UI that reads a codebase, edits files, executes shell commands, searches the web, and manages long-running tasks, and it can also run headless for scripting and CI. Extension points cover skills, plugins, hooks, subagents, and MCP servers, and Agent Client Protocol support lets editors embed it. Prebuilt binaries install via script on macOS, Linux, and Windows, with source builds needing Rust and DotSlash. By default it talks to the xAI API with models like grok-4.6, but custom model configuration allows pointing it at other endpoints, including fully local inference. The repository passed 26,000 GitHub stars, though xAI does not accept external contributions, treating the public mirror as read-mostly upstream.