During October 2025, Viglia enhanced profiling capabilities in the getsentry/sentry-protos repository by introducing a dedicated TRACE_ITEM_TYPE_PROFILE_FUNCTION category to the TraceItemType enum. This work involved updating both the Protocol Buffers definitions and the Rust implementation to ensure cross-language consistency, enabling explicit categorization of profile function data within Sentry’s tracing system. By focusing on API development and protocol design, Viglia laid the groundwork for improved observability and higher data fidelity in profiling traces. The feature provides a foundation for future performance diagnostics and profiling enhancements, reflecting a thoughtful approach to maintainability and extensibility in Rust and protobuf environments.