MCP Ecosystem Multi-SDK Update: Official C#, Kotlin, Java SDKs and Registry All Updated April 9-10

GitHub·medium signal

The Model Context Protocol ecosystem saw coordinated updates across multiple official SDKs in the last 48 hours: C# SDK (maintained with Microsoft), Kotlin SDK (with JetBrains), Java SDK (with Spring AI), and the community-driven MCP Registry all received updates on April 9-10. Signals maturing cross-language infrastructure as MCP becomes the standard agent-tool integration protocol.