Over a three-month period, contributed to the acdh-oeaw/apis-core-rdf repository by delivering five new features focused on extensibility, data integration, and maintainability. Developed an extensible relations menu in the base HTML template, enabling external UI customization while preserving core logic. Enhanced geographic data handling and improved API clarity through targeted documentation and expanded test coverage. Refactored the Relation API serialization using Django REST framework, simplifying representations and removing deprecated dependencies to streamline future development. Work emphasized backend development, code cleanup, and configuration management, leveraging Python, Django, and HTML to create a more modular, stable, and integration-friendly codebase.