Developed a type-safe array schema construction API for the MichaelCade/mcp-go repository, focusing on enhancing schema definition clarity and safety. The work introduced helper functions in Go that allow developers to define array item schemas for strings, numbers, and booleans, including support for string enums. This approach streamlines the process of building complex array schemas, reducing the risk of runtime errors and improving maintainability. Comprehensive testing ensured backward compatibility and robust coverage around new features. The changes laid a foundation for future schema tooling, leveraging skills in API design, schema definition, and testing to deliver a cleaner, more reliable developer experience.