Grok build harness released as open source

The software infrastructure behind Grok Build is now available as an open-source project on GitHub. Publishing this codebase gives developers a transparent look at how the system operates, offering a direct way to study its architecture from context assembly to tool execution.

Codebase contents

The released source code covers several core components:

• The agent loop, which handles context assembly, parses model responses, and dispatches tool calls.
• Built-in tools that allow the agent to read, edit, and search code, as well as run terminal commands.
• The terminal user interface, responsible for rendering, input handling, plan reviews, and inline diff viewing.
• An extension system that supports skills, plugins, hooks, Model Context Protocol servers, and subagents.

Local-first execution

Grok Build can now run entirely on local infrastructure. Developers can compile the project themselves, connect it to a local inference provider, and manage settings directly through a configuration file.

By making these components accessible, the project aims to serve as a reference implementation for anyone building or extending similar agentic workflows.