x.ai Releases Grok Build Source Code
- •x.ai open-sourced its coding agent and terminal user interface, Grok Build, on July 15, 2026.
- •The release includes the agent loop, extension system, and TUI components on GitHub.
- •Users can now operate Grok Build locally by compiling the source and using custom configurations.
On July 15, 2026, x.ai released the source code for Grok Build, its coding agent and terminal user interface (TUI), via GitHub. The company stated that publishing the codebase provides a transparent view of the agent's internal operations, including context assembly, model response parsing, and tool-call dispatch.
The open-source release aims to simplify development by serving as a reference for integrating skills, plugins, hooks, MCP servers, and subagents. Users can now run the system in a local-first environment by compiling the software and configuring it through a config.toml file. The published repository contains the full agent loop, code-editing tools, and the TUI, which handles input, planning, and an inline diff viewer for reviewing changes. Developers can install the tool directly from the terminal.