Developed two new APIs—ExtractValueFromTable and GradientBetweenVerticalLevels—for the metoppv/improver repository, expanding its data processing capabilities for downstream analytics and modeling workflows. Focused on backend and API development using Python, the work enabled richer data extraction and vertical-gradient analysis within the improver package. A targeted revert was performed to refine the implementation and enhance stability, demonstrating a careful approach to code quality and maintainability. All changes were clearly documented with traceable commits, ensuring transparency and reproducibility. The contributions laid a technical foundation for future enhancements in data analytics, emphasizing robust backend architecture and thoughtful API design practices.