During November 2024, contributed to the liguodongiot/transformers repository by enhancing the HfApiEngine class to support optional token-based authentication and configurable maximum token limits. This work focused on improving API flexibility, security, and cost control by introducing new parameters while maintaining backward compatibility within the existing llm_engine.py module. Comprehensive documentation and usage examples were added to guide developers in adopting these features effectively. The implementation was carried out using Python, with an emphasis on robust API development and clear technical communication. No major bugs were reported during this period, reflecting a careful and methodical approach to feature delivery.