Matej Volf developed and documented API features across apify/apify-docs, apify-client-python, and apify-client-js, focusing on improving developer experience and platform consistency. He clarified the behavior of resurrected runs in the API, aligning documentation with implementation to reduce user confusion. In January 2026, Matej delivered cross-language support for retrieving key-value store records as attachments, enabling unmodified HTML downloads via an attachment parameter. His work involved Python, TypeScript, and OpenAPI Specification, ensuring consistent browser delivery and reducing client-side workarounds. The updates enhanced maintainability and usability, reflecting a thorough approach to API development, documentation, and cross-repository collaboration.