During March 2025, contributed to the microsoft/json-schemas repository by designing and delivering a Graph Instance Definition Schema, which standardized and validated the structure of graphInstance artifacts through a dedicated JSON schema. This work focused on schema definition and data modeling, ensuring consistent representation and validation of graph instance definitions for downstream tooling. Additionally, addressed a data integrity issue by correcting a data type array in a metadata-only commit, maintaining accuracy across schema definitions. The approach emphasized disciplined Git workflows and traceability, leveraging expertise in JSON and JSON Schema to establish a reliable baseline for future schema-driven development and validation efforts.