The Agency by Design Inquiry Cycle has been designed to support educators in the processes of designing, documenting, assessing, and reflecting on maker-centered learning. This tool was collaboratively developed over time, and formally prototyped with cohorts of maker educators in two locations: Oakland, California, and Pittsburgh, Pennsylvania. In this paper, Agency by Design researchers Jessica Ross and Edward P. Clapp loosely use the structure of the Inquiry Cycle to describe the iterative process of developing this tool, along with some suggested implications for practice. Throughout the piece, we share the experiences of our teacher partners as they grappled with this tool—tweaking, hacking, and remixing it—as they explored its potential for designing, documenting, assessing, and reflecting upon their work in the maker-centered classroom.