During December 2024, Tiago Santos enhanced developer onboarding for the Shopify checkout-sheet-kit-swift repository by improving documentation resources. He updated the README.md using Markdown to include a direct reference to the Customer Account API Authentication Guide, making it easier for developers to implement buyer authentication and personalized checkout flows. This targeted documentation change addressed discoverability challenges for integrating the Customer Account API, streamlining the setup process for both merchants and developers. The work focused on clarity and accessibility, with a single, well-scoped commit that improved resource navigation. Tiago’s contribution demonstrated depth in documentation practices and attention to developer experience.