The Nephrology toolkit bundle groups together several interoperable forms and templates that support common nephrology-related clinical assessments and calculations. These tools help demonstrate how structured renal data can be captured and interpreted within digital health applications. The bundle includes calculators for renal function estimation, fluid therapy planning, osmolar balance, and metabolic disturbances, together with documentation tools for urinalysis and urine sample requests. Each form is supported by a corresponding openEHR template and fileset to ensure semantic consistency, interoperability, and reuse across applications built on the Better Platform. Together, these assets illustrate how nephrology workflows can be represented through structured clinical data models, enabling consistent documentation, calculation logic, and integration with electronic health records.