Craig contributed to both the rust-lang/cargo and DioxusLabs repositories, focusing on developer experience and maintainability. In rust-lang/cargo, he improved the cargo tree command by updating help messages to use a universal --invert flag with dependency names and versions, ensuring accurate guidance for both workspace and non-workspace contexts. For DioxusLabs, Craig refactored the Dioxus core API, deprecating outdated schedule update methods and clarifying documentation to streamline onboarding. He also updated docsite examples to reflect new reactive patterns. His work demonstrated depth in Rust, API design, and documentation, resulting in clearer interfaces and more reliable command-line tooling for developers.