Worked on the livekit/agents repository to enhance reliability by addressing a critical bug in the RealtimeSession component. Focused on backend development using Python, the work involved implementing a targeted fix for parsing doubly-encoded JSON tool arguments originating from Nova Sonic. By unwrapping these arguments, the solution ensured stable tool invocation and reduced runtime errors, particularly in AWS integration contexts. The approach emphasized correctness and maintainability, with changes delivered as a focused, testable commit. Skills in JSON handling and unit testing were applied to strengthen end-to-end integration, resulting in improved stability and traceability for the livekit/agents codebase.