Worked on the spring-ai repository to address schema generation issues for Kotlin suspend functions, focusing on improving contract correctness and integration reliability. Using Java and Kotlin, implemented logic to exclude the synthetic Continuation parameter from input schemas, preventing invalid $completion properties and reducing tool contract errors. Enhanced the JsonSchemaGenerator and McpJsonSchemaGenerator components with Kotlin-specific detection, and added comprehensive unit tests to ensure robust handling across code paths. The work closed long-standing issues related to @Tool and @McpTool annotations, resulting in fewer runtime contract violations and a smoother developer experience for Kotlin-based integrations, all delivered in a single, well-documented commit.