Worked on improving error reporting reliability within the Effect-TS/effect-smol repository by addressing error type handling in the AtomHttpApiClient. Focused on refining how server errors are classified and reported, the solution enhanced the accuracy of API error management and reduced the risk of misclassification. Leveraging TypeScript and applying robust error handling techniques, the update stabilized client-server interactions and streamlined the debugging process for downstream consumers. This targeted bug fix contributed to more reliable API usage and improved observability, aligning technical improvements with business needs by enabling faster triage and reducing time spent diagnosing server-side issues in production environments.