During May 2026, contributed to the http4k/http4k repository by implementing AWS STS GetCallerIdentity integration within the STS client. This feature enables programmatic retrieval of AWS account identity, supporting enhanced security auditing and access-control workflows in AWS integrations. The work included comprehensive test coverage and the creation of fake and stub implementations, facilitating robust development and testing environments. Using Kotlin and focusing on backend and API development, the changes were carefully aligned with existing http4k design patterns to maintain codebase simplicity and maintainability. No bugs were fixed during this period, with efforts concentrated on delivering this targeted feature.