MCPSharp is a .NET library that helps you build Model Context Protocol (MCP) servers - the standardized API protocol used by AI assistants and models. With MCPSharp, you can create MCP-compliant tools and functions that AI models can discover and use, expose your .NET methods as MCP endpoints with simple attributes, generate accurate MCP schema documentation automatically, and handle MCP protocol details and JSON-RPC communication seamlessly. Use MCPSharp when you want to create tools that AI assistants like Anthropics Claude Desktop can use, build MCP-compliant APIs without dealing with the protocol details, expose existing .NET code as MCP endpoints, and add AI capabilities to your applications through standardized interfaces. Features include easy-to-use attribute-based API, built-in JSON-RPC support with automatic request/response handling, automatic parameter validation and type conversion, rich documentation support through XML comments, and zero configuration required for basic usage. Prerequisites include .NET 9.0 or higher and C# 13.0 or higher. Installation is easy with `dotnet add package MCPSharp`. The API reference includes attributes like `[McpTool]`, `[McpFunction]`, and `[McpParameter]`, and provides a complete example. XML Documentation Support is also available for MCPSharp. Get started with MCPSharp today for seamless MCP server development.
