Niek Tax developed and packaged the MCGrad Tool for multicalibration in machine learning, contributing to the conda-forge/staged-recipes repository. He created a conda recipe that defined dependencies, build instructions, and automated testing commands, enabling reproducible installation and verification of the tool. Using Python and YAML, Niek focused on package management best practices, ensuring that the MCGrad Tool could be easily distributed and integrated into data science workflows. Although the work spanned one month and did not involve bug fixes, it demonstrated a solid understanding of packaging, documentation, and version control, supporting streamlined experimentation for machine learning practitioners.