# MCP stdio Server Solutions > **⚠️ Important**: These solutions have been updated to use the **stdio transport** as recommended by MCP Specification 2025-06-18. The original SSE (Server-Sent Events) transport has been deprecated. Here are the complete solutions for building MCP servers using the stdio transport in each runtime: - [TypeScript](./typescript/) - Complete stdio server implementation - [Python](./python/) - Python stdio server with asyncio - [.NET](./dotnet/) - .NET stdio server with dependency injection Each solution demonstrates: - Setting up stdio transport - Defining server tools - Proper JSON-RPC message handling - Integration with MCP clients like Claude All solutions follow the current MCP specification and use the recommended stdio transport for optimal performance and security.