In February 2026, Michael Wotton focused on enhancing JSON Schema compatibility within the modelcontextprotocol/rust-sdk repository. He addressed a validation issue by removing the AddNullable transformation from the draft2020_12 settings, aligning the backend with JSON Schema 2020-12 standards. Using Rust, he updated and expanded the test suite to accurately represent nullable types, such as type arrays with null and anyOf patterns, ensuring interoperability with strict validators. This work improved reliability for client integrations and reduced runtime errors. Michael’s targeted bug fix demonstrated a deep understanding of backend development and schema compliance, contributing to long-term maintainability.