Easily Integrate Your .NET API with AI Agents Using MCP
This article explains how to turn a .NET module into an MCP (Model Context Protocol) server, allowing AI agents like Claude, Copilot, and Cursor to directly interact with your application's API.
Why it matters
Integrating your .NET API with AI agents through the MCP protocol can streamline the interaction between your application and AI-powered assistants, improving developer productivity and user experience.
Key Points
- 1MCP is an open protocol that enables AI agents to discover and invoke capabilities exposed by your application
- 2The official MCP C# SDK from Microsoft and Anthropic simplifies the process of creating an MCP server
- 3The SDK handles the protocol, but production apps need additional features like authentication, data privacy, and multi-tenancy
Details
The article introduces the Model Context Protocol (MCP), which allows AI agents to connect to your application, discover available tools with typed parameters and descriptions, and invoke them directly. This eliminates the need for glue code or prompt engineering per endpoint. The author demonstrates how to turn a .NET module into an MCP server in under 50 lines of code using the official MCP C# SDK. However, the article also highlights several challenges that the SDK does not solve, such as lack of authentication per tool, potential leakage of personally identifiable information (PII) in responses, tool sprawl, multi-tenancy issues, and lack of error handling and metrics. The author mentions that they have addressed these problems in an open-source .NET framework called Granit.
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