During April 2026, this developer enhanced the cashapp/misk repository by implementing protobuf POST support for gRPC actions using Kotlin and gRPC. They introduced the @EnableUnframedRequests annotation, allowing gRPC endpoints to accept HTTP POST requests with Content-Type: application/x-protobuf, which eliminated the need for separate WebAction classes and reduced boilerplate code. Their work included updating API declarations and documentation to reflect the new behavior, as well as developing integration tests to ensure reliability across both protobuf and JSON POST scenarios. The project emphasized API development, web development, and code quality improvements, resulting in more flexible and interoperable microservice communication.