Developed enhancements to the TencentBlueKing/bk-monitor repository by expanding the API Gateway with new endpoints for Index Set Details and Field Statistics. Focused on backend development and API design, the work introduced POST-based endpoints to retrieve detailed statistics and TopK lists, improving data accessibility and supporting analytics for monitoring use cases. Leveraged YAML for gateway resource configuration, ensuring alignment and consistency with the newly added endpoints. The implementation addressed the need for more granular index-set and field-level insights, enabling faster, data-driven decision-making. No major bugs were fixed during this period, with efforts concentrated on feature delivery and configuration updates.