The Model Context Protocol C# SDK is a library for building clients and servers that implement the Model Context Protocol to integrate AI tools and resources. It provides an AI tool integration framework and a multi-modal content handler to exchange text, images, and binary resources between AI models and external context providers.
The SDK utilizes a JSON-RPC communication library to manage bidirectional data exchange. It features a transport-agnostic communication layer that supports standard input and output, HTTP, and in-memory pipes, with specific integration for ASP.NET Core hosting.
The framework covers tool and prompt management, including schema-driven tool generation and attribute-based capability discovery. It supports resource management via URI-template mapping, asynchronous task orchestration, and secure authorization workflows through token exchange and identity assertion.