The 2-week CarpetX hackathon/working workshop was successfully hosted at NCSA, bringing together 14 CarpetX developers from UIUC, Perimeter Institute, Louisiana State University, Rochester Institute of Technology, University of Idaho, and University of Texas at Austin. Together the team advanced the core functionalities and physics modules for CarpetX, including spacetime evolution, GRMHD, subcycling in time, multi-patch coordinate system, code generation, and more.