Saphal Pandey developed a signed preview link generation feature for the Daytona Go SDK, focusing on secure, time-bound access to sandbox environments in the daytonaio/daytona repository. He implemented a signed GetPreviewLink method with expiration, leveraging Go for backend and API development while applying cryptography basics to ensure link integrity. This enhancement streamlined the developer workflow by enabling automated, expiring preview links, reducing manual steps for resource access. The work addressed security concerns by introducing granular access controls and improved customer validation cycles. Saphal’s contribution demonstrated depth in SDK design, secure API implementation, and practical application of Go in backend systems.