Developed and delivered a per-modality token breakdown feature for the rungalileo/galileo-js JavaScript SDK, enabling detailed tracking of token usage across different modalities such as audio and image. This work involved extracting and logging token details from response metadata, providing enhanced visibility into token consumption for improved cost management and usage analysis. The implementation leveraged TypeScript and API integration skills, with a focus on metadata parsing and cross-modality analysis. Throughout the rollout, stability was maintained without introducing major bugs, supporting clearer cost forecasting and informed decision-making for multi-modality workloads while demonstrating a methodical approach to full stack development and testing.