Marci developed comprehensive documentation for the Barretenberg CLI within the AztecProtocol/aztec-packages repository, focusing on improving the onboarding process and clarifying usage for developers. Using Markdown and leveraging technical writing skills, Marci detailed global options, subcommands such as check, gates, prove, verify, and write_vk, and provided usage examples to ensure clarity. The documentation also addressed backward compatibility with legacy API commands, reducing support overhead and promoting consistency. Although the work was limited to a single feature over one month, the depth of the documentation provided a solid foundation for future enhancements and contributed to a smoother developer experience.