Worked on the ktorio/ktor repository to enhance OpenAPI schema generation, focusing on accurate representation of polymorphic types and nullable value classes. Addressed challenges in handling sealed types by improving discriminator recognition and stabilizing component naming, which reduced conflicts and improved documentation reliability for API clients. Implemented support for nullable value classes, updating tests and snapshot handling to ensure correctness across JVM and non-JVM builds. Leveraged Kotlin, Ktor, and OpenAPI schema design, applying test-driven development practices to validate changes. The work streamlined API documentation, minimized manual corrections, and strengthened integration for clients relying on precise backend schema definitions.