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How to Build Your First AI Agent Using .NET and Azure AI Foundry

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A new tutorial on DEV Community guides .NET developers through building their first AI agent using Azure AI Foundry Agent Service and C#. Unlike basic chat completion calls, Foundry agents are durable, stateful, and tool-aware, allowing them to run code, call APIs, and maintain multi-turn conversations. The setup requires an Azure AI Foundry project with a deployed chat model, proper RBAC role assignment, and Azure CLI authentication to avoid common access errors. Developers use the Azure.AI.Projects NuGet package to create a typed C# client and define an agent with custom instructions in just a few lines of code. The walkthrough covers the full process from Azure configuration to running agent code, and is accompanied by a hands-on video tutorial.

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How to Build Your First AI Agent Using .NET and Azure AI Foundry · ShortSingh