Worked on the 0xPlaygrounds/rig repository to enhance observability and traceability in backend systems by introducing internal tool call IDs for tracking tool events throughout their lifecycle. Leveraging Rust and streaming architecture, the developer refactored data structures to reduce payload complexity and prepared the system for nanoid-based ID support in bedrock. The approach included updating streaming pipelines to propagate these IDs, ensuring end-to-end traceability and laying the foundation for future XAI and analytics features. Adjustments to CI and test suites were made to accommodate these changes, demonstrating a methodical approach to evolving backend instrumentation and supporting advanced debugging workflows.