Worked on the modelcontextprotocol/rust-sdk repository, focusing on improving the accuracy of developer documentation for the Rust SDK’s Calculator Example. Addressed a documentation bug by updating the description of the 'sub' operation to correctly reflect its function as a difference rather than a sum, ensuring that guidance aligns with actual code behavior. This change, implemented in Rust and emphasizing skills in code examples and documentation, aimed to reduce confusion for developers and support more reliable onboarding. The update maintained documentation quality through precise commit messaging and traceability, contributing to a more consistent and dependable developer experience within the project.