Worked on the grafana/mcp-go repository to deliver a Tool Annotations System that enriches tool metadata for improved discovery, safety, and usability. The solution involved adding an Annotations field to the Tool struct, supporting attributes such as Title, ReadOnlyHint, DestructiveHint, IdempotentHint, and OpenWorldHint. Developed the WithToolAnnotation option to streamline annotation assignment during tool creation, making metadata more explicit and actionable. Focused on API design and backend development using Go, the work emphasized integration with existing components and set the stage for future annotation-driven features. No bugs were fixed during this period, with efforts centered on feature delivery and validation.