During October 2024, this developer enhanced the aws/amazon-ssm-agent repository by delivering a security-focused feature for plugin downloads. They introduced an optional S3 ownership verification parameter, updating the plugin download logic to support owner verification and improve access control. The implementation involved backend development in Go, leveraging the AWS SDK to modify download functions and ensure secure handling of S3 resources. Integration tests were updated to validate the new parameter’s behavior across different scenarios, emphasizing thorough testing practices. This work addressed potential security risks by reducing unauthorized plugin access and demonstrated a methodical approach to API development and feature validation.