Tony Stark focused on enhancing the laterpay/supertab-docs repository by delivering comprehensive documentation and API reference updates for the new Off-App Purchases feature. He authored and updated MDX documentation to guide merchants and developers through the redirect flow, Supertab SDK installation, and revised checkEntitlement usage. His work emphasized documentation engineering and API reference design, ensuring that integration paths were clear and onboarding was streamlined. By collaborating across teams, Tony aligned installation and entitlement usage details, reducing support needs and clarifying API usage. The depth of his contributions improved developer experience and provided a robust foundation for future documentation enhancements using Markdown.