MCPSharp
by afrise
MCPSharp is a .NET library that helps you build Model Context Protocol (MCP) servers and clients - the standardized API protocol used by AI assistants and models.
359stars
41forks
C#
Added 12/27/2025
AI Agentsaiaifunctionsdotnetdotnet-standardmcp
Installation
# Add to your Claude Code skills
git clone https://github.com/afrise/MCPSharp
MCPSharp
MCPSharp is a .NET library that helps you build Model Context Protocol (MCP) servers and clients - 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
- Connect directly to existing MCP servers from C# code with an easy to use client
- Expose your .NET methods as MCP endpoints with simple attributes
- Handle MCP protocol details and JSON-RPC communication seamlessly
🚀 What's New in MCPSharp
- Microsoft.Extensions.AI Integration: MCPSharp now integrates with Microsoft.Extensions.AI, allowing tools to be exposed as AIFunctions
- Semantic Kernel Support: Add tools using Semantic Kernel's KernelFunctionAttribute
- Dynamic Tool Registration: Register tools on-the-fly with custom implementation logic
- Tool Change Notifications: Server now notifies clients when tools are added, updated, or removed
- Complex Object Parameter Support: Better handling of complex objects in tool parameters
- Better Error Handling: Improved error handling with detailed stack traces
When to Use MCPSharp
Use MCPSharp when you want to:
- Create tools that AI assistants like Anthropic's Claude Desktop can use