During February 2025, Daniel Leon enhanced the epilot-dev/sdk-js repository by extending the Entity Mapping Client to support payment data mapping. He introduced a new 'payment' type to the MappingSourceTargetType enum, aligning the client specification with evolving payment data flows and reducing the need for manual mapping. This update improved interoperability with downstream services and supported scalable evolution of the client specification. Daniel’s work demonstrated a spec-driven approach, leveraging TypeScript for enum extension and maintainable SDK development. While no major bugs were addressed during this period, the feature delivered a focused, incremental improvement to the API client’s mapping capabilities.