Incredible. SpaceXAI just really open-sourced Grok Build with Apache 2.0 license. 39 mints and 1.9K+ Github stars.

So now can look into the the harness/agent machinery behind its terminal coding system.

They also reset every user's usage allowance.

The published Rust code covers the agent loop, file tools, shell execution, web search, and terminal interface.

Users can compile it themselves, connect local inference, and control behavior through config.toml.

Apache 2.0 permits modification and redistribution, giving companies freedom to audit or fork the software.

External contributions remain closed, while the public repository syncs periodically from an internal monorepo.

Independent forks can still test different reliability designs, but shared upstream development remains limited.