Microsoft released version 2.0 of the official MCP C# SDK, implementing the 2026-07-28 Model Context Protocol revision. Streamable HTTP servers are now stateless by default, and Multi Round-Trip Requests (MRTR) let interactive tools ask clients for input. Releases 2.1 to 2.3 added hybrid session serving, a subscriptions/listen handler and several OAuth and discovery fixes.
This walkthrough shows how to move a tool-using ASP.NET Core agent from Semantic Kernel to Microsoft Agent Framework step by step. The Kernel-centered model gives way to IChatClient, AIAgent and AIFunctionFactory. It is a practical plan for teams already running Semantic Kernel agents.
The article examines what a .NET AI agent does when its own guardrails fail, such as a throwing guard, a down classifier, a missing caller or miswired middleware. The author deliberately breaks each guard layer and shows how to make the request blocked instead of silently allowed. It ends with a practical checklist for developers building guarded agents.
Part 3 of Scott Galloway's series builds a temporal predictor in C#. It tracks a journey's centroid, velocity and acceleration in real time, then forecasts whether it ends in purchase, cancellation or departure within 60 seconds. The engine learns only from actual endpoints and abstains when evidence is thin, which makes it a concrete example for teams building SQLite-backed behavioural or service-health models.
Microsoft has introduced Work IQ, a workplace intelligence layer that lets AI agents read and act on live Microsoft 365 and Dynamics 365 data. Developers can reach it through an MCP server, an A2A endpoint or a REST API instead of wiring up many Graph endpoints. Every request runs under the signed-in user's Entra ID identity.
Bruno Capuano shows a local .NET pipeline that turns podcast audio into SRT or WebVTT subtitles. Whisper handles speech recognition and timestamps, while the s1-mini model only cleans each cue's text, so timing stays untouched. The post also covers the limits he found with long Spanish recordings.
MCP C# SDK 2.3.0 brings improvements to HTTP discovery, OAuth, stdio shutdown and the ordering of server tools, prompts and resources. It also includes a source-compatibility change: McpClient.ServerInfo is now nullable. Projects that read this property may see new nullable warnings or fail warnings-as-errors builds.
Part 9 of Taiseer Joudeh's MCP series shows how to attach an existing ASP.NET Core MCP server to a hosted Foundry agent without changing its code. The setup covers a Foundry project, an Entra app registration, a custom MCP connection using OAuth identity passthrough, and a toolbox. It matters for .NET teams that want the agent loop in Azure while user-based authorization still works.
The GitHub Copilot SDK lets you keep GitHub's agent runtime while routing model inference to your own Microsoft Foundry or Azure OpenAI deployment through BYOK. The article walks through a .NET 10 console sample that configures ProviderConfig, authenticates with Microsoft Entra ID or an API key, and sends one prompt.
A practical guide to adding a Model Context Protocol server to an existing ASP.NET Core app using the official ModelContextProtocol C# SDK. It covers wrapping existing services as read-only tools, locking the endpoint down with JWT authentication and per-tool authorization, and verifying the surface with an MCP client. Useful for teams that want AI agents to use their current APIs without a rewrite.
Microsoft Graph supplies calendar, mail and document data that can be indexed with Azure AI Search and passed to a language model to produce sourced answers. The article walks through a .NET retrieval-augmented generation flow with code for loading context, chunking documents and calling the model. It stresses least-privilege scopes and permission-aware retrieval, which matter for any enterprise assistant.
This post shows how to host a Microsoft Agent Framework agent over the Agent-to-Agent (A2A) protocol in ASP.NET Core and call it from a separate client as if it were local. It covers the agent card, session handling and the JSON-RPC endpoint.