# Microsoft.Extensions.AI

Published articles for Microsoft.Extensions.AI.

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## Build Agentic UI with the new Blazor AI components

DevFeed: [Build Agentic UI with the new Blazor AI components](<https://devfeed.tech/articles/build-agentic-ui-with-the-new-blazor-ai-components-61403.md>)

Original publisher: [Read original article](<https://devblogs.microsoft.com/dotnet/build-agentic-ui-blazor/>)

Author: Daniel Roth

Published: 2026-09-28T17:05:00Z

Content type: tutorial

Language: en

Sources: [.NET Blog](<https://devfeed.tech/sources/net-blog.md>)

Topics: [Blazor](<https://devfeed.tech/topics/blazor.md>), [Agentic AI](<https://devfeed.tech/topics/what-is-agentic-ai.md>), [AI for interactive applications](<https://devfeed.tech/topics/ai-for-interactive-applications.md>), [Angular](<https://devfeed.tech/topics/angular.md>)

Tags: [ag-ui](<https://devfeed.tech/tags/ag-ui.md>), [agent-framework](<https://devfeed.tech/tags/agent-framework.md>), [agentic-ui](<https://devfeed.tech/tags/agentic-ui.md>), [ai](<https://devfeed.tech/tags/ai.md>), [asp-net-core](<https://devfeed.tech/tags/asp-net-core.md>), [aspire](<https://devfeed.tech/tags/aspire.md>), [blazor](<https://devfeed.tech/tags/blazor.md>), [c-sharp](<https://devfeed.tech/tags/c-sharp.md>), [components](<https://devfeed.tech/tags/components.md>), [microsoft-agent-framework](<https://devfeed.tech/tags/microsoft-agent-framework.md>), [microsoft-extensions-ai](<https://devfeed.tech/tags/microsoft-extensions-ai.md>), [microsoft-foundry](<https://devfeed.tech/tags/microsoft-foundry.md>), [net](<https://devfeed.tech/tags/net.md>), [net-11](<https://devfeed.tech/tags/net-11.md>), [ui](<https://devfeed.tech/tags/ui.md>)

### AI overview

The article introduces experimental Blazor AI components for building agentic user interfaces. It describes components that render streamed agent interactions, expose observable state, and support shared application data that users and agents can update. It also points to an AgenticUI sample combining these components with tools from the .NET ecosystem.

### Source excerpt

Build Agentic UI with the new Blazor AI components for streamed content, tools, approvals, shared state, and generative experiences. The post Build Agentic UI with the new Blazor AI components appeared first on .NET Blog.

## AG-UI Protocol now has a first-class .NET SDK

DevFeed: [AG-UI Protocol now has a first-class .NET SDK](<https://devfeed.tech/articles/ag-ui-protocol-now-has-a-first-class-net-sdk-60199.md>)

Original publisher: [Read original article](<https://devblogs.microsoft.com/dotnet/ag-ui-dotnet-sdk/>)

Author: Daniel Roth

Published: 2026-09-25T17:05:00Z

Content type: release

Language: en

Sources: [.NET Blog](<https://devfeed.tech/sources/net-blog.md>)

Topics: [.NET](<https://devfeed.tech/topics/net.md>), [SDK](<https://devfeed.tech/topics/sdk.md>), [Protocol (disambiguation)](<https://devfeed.tech/topics/protocol.md>), [Microsoft Agent Framework](<https://devfeed.tech/topics/microsoft-agent-framework.md>), [ASP.NET Core](<https://devfeed.tech/topics/asp-net-core.md>), [C#](<https://devfeed.tech/topics/csharp.md>), [Back end](<https://devfeed.tech/topics/backend.md>)

Tags: [ag-ui](<https://devfeed.tech/tags/ag-ui.md>), [ai](<https://devfeed.tech/tags/ai.md>), [ai-agents](<https://devfeed.tech/tags/ai-agents.md>), [asp-net](<https://devfeed.tech/tags/asp-net.md>), [asp-net-core](<https://devfeed.tech/tags/asp-net-core.md>), [backend](<https://devfeed.tech/tags/backend.md>), [c-sharp](<https://devfeed.tech/tags/c-sharp.md>), [microsoft](<https://devfeed.tech/tags/microsoft.md>), [microsoft-agent-framework](<https://devfeed.tech/tags/microsoft-agent-framework.md>), [microsoft-extensions-ai](<https://devfeed.tech/tags/microsoft-extensions-ai.md>), [net](<https://devfeed.tech/tags/net.md>), [nuget](<https://devfeed.tech/tags/nuget.md>), [protocol](<https://devfeed.tech/tags/protocol.md>), [sdk](<https://devfeed.tech/tags/sdk.md>)

### AI overview

Microsoft and CopilotKit contributed a .NET SDK for the AG-UI protocol, enabling .NET services to expose and consume interoperable agent endpoints. The SDK is published on NuGet under the MIT license and supports integration with the Microsoft Agent Framework.

### Source excerpt

The new AG-UI .NET SDK enables .NET services to expose and consume interoperable agent endpoints using Microsoft.Extensions.AI. The post AG-UI Protocol now has a first-class .NET SDK appeared first on .NET Blog.

## Routing and Failover for Microsoft.Extensions.AI

DevFeed: [Routing and Failover for Microsoft.Extensions.AI](<https://devfeed.tech/articles/routing-and-failover-for-microsoft-extensions-ai-2953.md>)

Original publisher: [Read original article](<https://devblogs.microsoft.com/dotnet/routing-and-failover-for-microsoft-extensions-ai/>)

Author: Joshua Yue

Published: 2026-08-13T19:30:00Z

Content type: article

Language: en

Sources: [.NET Blog](<https://devfeed.tech/sources/net-blog.md>)

Topics: [AI Chat](<https://devfeed.tech/topics/ai-chat.md>), [.NET](<https://devfeed.tech/topics/net.md>)

Tags: [ai](<https://devfeed.tech/tags/ai.md>), [ai-routing](<https://devfeed.tech/tags/ai-routing.md>), [c-sharp](<https://devfeed.tech/tags/c-sharp.md>), [cache](<https://devfeed.tech/tags/cache.md>), [embeddings](<https://devfeed.tech/tags/embeddings.md>), [generative-ai](<https://devfeed.tech/tags/generative-ai.md>), [latency](<https://devfeed.tech/tags/latency.md>), [llm](<https://devfeed.tech/tags/llm.md>), [microsoft-extensions-ai](<https://devfeed.tech/tags/microsoft-extensions-ai.md>), [models](<https://devfeed.tech/tags/models.md>), [net](<https://devfeed.tech/tags/net.md>), [routing](<https://devfeed.tech/tags/routing.md>)

### AI overview

Microsoft.Extensions.AI introduces experimental routing and failover primitives for directing chat requests across models and providers. The article covers custom routing policies, semantic routing using embeddings, option handling across attempts, and constraints when switching providers during reasoning conversations.

### Source excerpt

Route requests across models and providers natively in Microsoft.Extensions.AI with RoutingChatClient, SemanticRoutingChatClient, and FailoverChatClient -- new experimental primitives for content-based routing, failover, and custom routing policies. The post Routing and Failover for Microsoft.Extensions.AI appeared first on .NET Blog.

## Announcing response streaming for .NET on AWS Lambda

DevFeed: [Announcing response streaming for .NET on AWS Lambda](<https://devfeed.tech/articles/announcing-response-streaming-for-net-on-aws-lambda-50102.md>)

Original publisher: [Read original article](<https://aws.amazon.com/blogs/developer/announcing-response-streaming-for-net-on-aws-lambda/>)

Author: Norm Johanson

Published: 2026-08-05T20:08:43Z

Content type: release

Language: en

Sources: [AWS Developer Tools Blog](<https://devfeed.tech/sources/aws-developer-tools-blog.md>)

Topics: [AWS Lambda](<https://devfeed.tech/topics/aws-lambda.md>), [Streaming](<https://devfeed.tech/topics/streaming.md>), [.NET](<https://devfeed.tech/topics/net.md>), [Amazon API Gateway](<https://devfeed.tech/topics/amazon-api-gateway.md>), [Microsoft.Extensions.AI](<https://devfeed.tech/topics/microsoft-extensions-ai.md>), [Amazon Bedrock](<https://devfeed.tech/topics/amazon-bedrock.md>), [REST API](<https://devfeed.tech/topics/rest-api.md>)

Tags: [amazon-api-gateway](<https://devfeed.tech/tags/amazon-api-gateway.md>), [amazon-bedrock](<https://devfeed.tech/tags/amazon-bedrock.md>), [aws-lambda](<https://devfeed.tech/tags/aws-lambda.md>), [aws-sdk-for-net](<https://devfeed.tech/tags/aws-sdk-for-net.md>), [microsoft-extensions-ai](<https://devfeed.tech/tags/microsoft-extensions-ai.md>), [net](<https://devfeed.tech/tags/net.md>), [rest-api](<https://devfeed.tech/tags/rest-api.md>), [streaming](<https://devfeed.tech/tags/streaming.md>)

### AI overview

AWS Lambda now supports response streaming for .NET Lambda functions, allowing applications to send data incrementally instead of buffering complete responses. The article covers .NET usage, invocation through the Lambda API and tooling, streaming AI responses with Microsoft.Extensions.AI and Amazon Bedrock, and API Gateway REST API support.

### Source excerpt

Today, we are announcing support for AWS Lambda response streaming for .NET Lambda functions. With response streaming, functions can be more responsive by sending data back to the caller incrementally as it becomes available, rather than buffering the entire response in memory before returning it. Why response streaming? With the traditional Lambda invocation model, the [...]