Kenta Bell developed comprehensive Ruby Signature (RBS) type definitions for the ruby-odbc gem within the ruby/gem_rbs_collection repository. Drawing directly from the gem’s C source code and existing test suite, Kenta mapped out type definitions for core modules such as Database and Statement, as well as data types, error handling, and SQL constants. This work leveraged expertise in Ruby, RBS, and static analysis to enhance type safety and improve IDE support for downstream users. By standardizing type interfaces, Kenta’s contribution strengthened maintainability and facilitated onboarding for new contributors, laying a robust foundation for future enhancements and cross-team collaboration.