ai-agents-for-beginners

πŸ› οΈ αž€αžΆαžšαž”αŸ’αžšαžΎαž”αŸ’αžšαžΆαžŸαŸ‹αž§αž”αž€αžšαžŽαŸαž‡αŸ†αž“αžΆαž‰αž‡αžΆαž˜αž½αž™ Azure OpenAI (Responses API) (.NET)

πŸ“‹ αž‚αŸ„αž›αž”αŸ†αžŽαž„αž€αžΆαžšαžŸαž·αž€αŸ’αžŸαžΆ

αžŸαŸ€αžœαž—αŸ…αž€αŸ†αžŽαžαŸ‹αž…αŸ†αžŽαžΆαŸ†αž“αŸαŸ‡αž”αž„αŸ’αž αžΆαž‰αž–αžΈαž›αŸ†αž“αžΆαŸ†αž€αžΆαžšαž”αž‰αŸ’αž…αžΌαž›αž§αž”αž€αžšαžŽαŸαž€αž˜αŸ’αžšαž·αžαžŸαž αž‚αŸ’αžšαžΆαžŸαž”αŸ’αžšαžΎαž”αŸ’αžšαžΆαžŸαŸ‹ Microsoft Agent Framework αž€αŸ’αž“αž»αž„ .NET αž‡αžΆαž˜αž½αž™ Azure OpenAI (Responses API)αŸ” αž’αŸ’αž“αž€αž“αžΉαž„αžšαŸ€αž“αž€αžŸαžΆαž„αž—αŸ’αž“αžΆαž€αŸ‹αž„αžΆαžšαžŠαŸ‚αž›αž˜αžΆαž“αž‡αŸ†αž“αžΆαž‰αžαŸ’αž–αžŸαŸ‹αž‡αžΆαž˜αž½αž™αž§αž”αž€αžšαžŽαŸαž‡αžΆαž…αŸ’αžšαžΎαž“αžŠαŸ‚αž›αž˜αžΆαž“αž‡αŸ†αž“αžΆαž‰αž‡αžΆαž€αŸ‹αž›αžΆαž€αŸ‹ αžŠαŸ„αž™αž”αŸ’αžšαžΎαž”αŸ’αžšαžΆαžŸαŸ‹αž€αžΆαžšαž”αž‰αŸ’αž‡αžΆαž€αŸ‹αž”αŸ’αžšαž—αŸαž‘αžαŸ’αž›αžΆαŸ†αž„αžšαž”αžŸαŸ‹ C# αž“αž·αž„αž˜αž»αžαž„αžΆαžšαžšαž”αžŸαŸ‹ .NET αžŸαž˜αŸ’αžšαžΆαž”αŸ‹αžŸαž αž‚αŸ’αžšαžΆαžŸαŸ”

αžŸαž˜αžαŸ’αžαž—αžΆαž–αž§αž”αž€αžšαžŽαŸαž‡αŸ†αž“αžΆαž‰αžŠαŸ‚αž›αž’αŸ’αž“αž€αž“αžΉαž„αž…ζŽŒζ‘

🎯 αž’αžαŸ’αžαž”αŸ’αžšαž™αŸ„αž‡αž“αŸαžšαž…αž“αžΆαžŸαž˜αŸ’αž–αŸαž“αŸ’αž’αž§αž”αž€αžšαžŽαŸ .NET

αž˜αž»αžαž„αžΆαžšαž§αž”αž€αžšαžŽαŸαžŸαž αž‚αŸ’αžšαžΆαžŸ

αž›αŸ†αž“αžΆαŸ†αžŸαž˜αŸ’αžšαžΆαž”αŸ‹αž•αž›αž·αžαž€αž˜αŸ’αž˜

πŸ”§ αžšαž…αž“αžΆαžŸαž˜αŸ’αž–αŸαž“αŸ’αž’αž”αž…αŸ’αž…αŸαž€αž‘αŸαžŸ

αž€αž˜αŸ’αžšαž·αžαž‚αŸ’αžšαžΉαŸ‡αž§αž”αž€αžšαžŽαŸ .NET

αž•αŸ’αž›αžΌαžœαž”αž‰αŸ’αž‡αžΆβ€‹αž”αŸ’αžšαžαž·αž”αžαŸ’αžαž·αž§αž”αž€αžšαžŽαŸ

graph LR
    A[αžŸαŸ†αžŽαžΎαžšαžšαž”αžŸαŸ‹αž’αŸ’αž“αž€αž”αŸ’αžšαžΎ] --> B[αž€αžΆαžšαžœαž·αž—αžΆαž‚αž—αŸ’αž“αžΆαž€αŸ‹αž„αžΆαžš]
    B --> C[αž€αžΆαžšαž‡αŸ’αžšαžΎαžŸαžšαžΎαžŸαž§αž”αž€αžšαžŽαŸ]
    C --> D[αž€αžΆαžšαž•αŸ’αž‘αŸ€αž„αž•αŸ’αž‘αžΆαžαŸ‹αž”αŸ’αžšαž—αŸαž‘]
    B --> E[αž€αžΆαžšαž…αž„αž€αŸ’αžšαž„αž”αŸ‰αžΆαžšαŸ‰αžΆαž˜αŸ‰αŸ‚αžαŸ’αžš]
    E --> F[αž€αžΆαžšαž”αŸ’αžšαžαž·αž”αžαŸ’αžαž·αž§αž”αž€αžšαžŽαŸ]
    C --> F
    F --> G[αž€αžΆαžšαžŠαŸ†αžŽαžΎαžšαž€αžΆαžšαž•αž›αž›αž‘αŸ’αž’αž•αž›]
    D --> G
    G --> H[αž—αžΆαž–αžαž”αžŸαŸ’αž“αž„]

πŸ› οΈ αž”αŸ’αžšαž—αŸαž‘αž§αž”αž€αžšαžŽαŸ αž“αž·αž„αž›αŸ†αž“αžΆαŸ†

1. αž§αž”αž€αžšαžŽαŸαžŠαŸ†αžŽαžΎαžšαž€αžΆαžšαž‘αž·αž“αŸ’αž“αž“αŸαž™

2. αž§αž”αž€αžšαžŽαŸαž”αž‰αŸ’αž…αžΌαž›

3. αž§αž”αž€αžšαžŽαŸαž‡αŸ†αž“αž½αž™

αžαŸ’αžšαŸ€αž˜αžαŸ’αž›αž½αž“αžŸαž˜αŸ’αžšαžΆαž”αŸ‹αž€αžŸαžΆαž„αž—αŸ’αž“αžΆαž€αŸ‹αž„αžΆαžšαž€αž˜αŸ’αžšαž·αžαžŸαž αž‚αŸ’αžšαžΆαžŸαž‡αžΆαž˜αž½αž™αžŸαž˜αŸ’αžαž—αžΆαž–αž§αž”αž€αžšαžŽαŸαž˜αžΆαž“αž”αŸ’αžšαž—αŸαž‘αžŸαž»αžœαžαŸ’αžαž·αž—αžΆαž–αžαŸ’αž›αžΆαŸ†αž„αž€αŸ’αž“αž»αž„ .NET? αž˜αž€αžšαž…αž“αžΆαžŠαŸ†αžŽαŸ„αŸ‡αžŸαŸ’αžšαžΆαž™αž€αž˜αŸ’αžšαž·αžαžœαž·αž‡αŸ’αž‡αžΆαž‡αžΈαžœαŸˆ! 🏒⚑

πŸš€ αž€αžΆαžšαž…αžΆαž”αŸ‹αž•αŸ’αžαžΎαž˜

αž›αž€αŸ’αžαžαžŽαŸ’αžŒαž˜αž»αž“

αž‡αŸ†αž–αžΌαž€αž”αžšαž·αžŸαŸ’αžαžΆαž“αžαŸ’αžšαžΌαžœαž€αžΆαžš

# zsh/bash
export AZURE_OPENAI_ENDPOINT=https://<your-resource>.openai.azure.com
export AZURE_OPENAI_DEPLOYMENT=gpt-5-mini
# αž”αž“αŸ’αž‘αžΆαž”αŸ‹αž˜αž€αž…αž»αŸ‡αžˆαŸ’αž˜αŸ„αŸ‡αž…αžΌαž›αžŠαžΎαž˜αŸ’αž”αžΈαž²αŸ’αž™ AzureCliCredential αž’αžΆαž…αž‘αž‘αž½αž›αž”αžΆαž“αžŸαž‰αŸ’αž‰αžΆαž”αŸαžαŸ’αžš(token)
az login
# PowerShell
$env:AZURE_OPENAI_ENDPOINT = "https://<your-resource>.openai.azure.com"
$env:AZURE_OPENAI_DEPLOYMENT = "gpt-5-mini"
# αž”αž“αŸ’αž‘αžΆαž”αŸ‹αž˜αž€αž…αž»αŸ‡αžˆαŸ’αž˜αŸ„αŸ‡αžŠαžΎαž˜αŸ’αž”αžΈαž²αŸ’αž™ AzureCliCredential αž’αžΆαž…αž‘αž‘αž½αž›αž”αžΆαž“αžŸαž‰αŸ’αž‰αžΆαž”αŸαžαŸ’αžšαŸ”
az login

αž€αžΌαžŠαž‚αŸ†αžšαžΌ

αžŠαžΎαž˜αŸ’αž”αžΈαžšαžαŸ‹αž‚αŸ†αžšαžΌαž€αžΌαžŠ,

# zsh/bash
chmod +x ./04-dotnet-agent-framework.cs
./04-dotnet-agent-framework.cs

αžšαžΊαž”αŸ’αžšαžΎ CLI dotnet:

dotnet run ./04-dotnet-agent-framework.cs

αž˜αžΎαž› 04-dotnet-agent-framework.cs αžŸαž˜αŸ’αžšαžΆαž”αŸ‹αž€αžΌαžŠαž–αŸαž‰αž›αŸαž‰αŸ”

#!/usr/bin/dotnet run

#:package Microsoft.Extensions.AI@10.*
#:package Microsoft.Agents.AI.OpenAI@1.*-*
#:package Azure.AI.OpenAI@2.1.0
#:package Azure.Identity@1.13.1

using System.ComponentModel;

using Microsoft.Agents.AI;
using Microsoft.Extensions.AI;

using Azure.AI.OpenAI;
using Azure.Identity;

// Tool Function: Random Destination Generator
// This static method will be available to the agent as a callable tool
// The [Description] attribute helps the AI understand when to use this function
// This demonstrates how to create custom tools for AI agents
[Description("Provides a random vacation destination.")]
static string GetRandomDestination()
{
    // List of popular vacation destinations around the world
    // The agent will randomly select from these options
    var destinations = new List<string>
    {
        "Paris, France",
        "Tokyo, Japan",
        "New York City, USA",
        "Sydney, Australia",
        "Rome, Italy",
        "Barcelona, Spain",
        "Cape Town, South Africa",
        "Rio de Janeiro, Brazil",
        "Bangkok, Thailand",
        "Vancouver, Canada"
    };

    // Generate random index and return selected destination
    // Uses System.Random for simple random selection
    var random = new Random();
    int index = random.Next(destinations.Count);
    return destinations[index];
}

// Azure OpenAI with the Responses API (stable v1 endpoint). Sign in with `az login`.
var azureEndpoint = Environment.GetEnvironmentVariable("AZURE_OPENAI_ENDPOINT")
    ?? throw new InvalidOperationException("AZURE_OPENAI_ENDPOINT is not set.");
var deployment = Environment.GetEnvironmentVariable("AZURE_OPENAI_DEPLOYMENT") ?? "gpt-5-mini";

var azureClient = new AzureOpenAIClient(new Uri(azureEndpoint), new AzureCliCredential());

// Define Agent Identity and Comprehensive Instructions
// Agent name for identification and logging purposes
var AGENT_NAME = "TravelAgent";

// Detailed instructions that define the agent's personality, capabilities, and behavior
// This system prompt shapes how the agent responds and interacts with users
var AGENT_INSTRUCTIONS = """
You are a helpful AI Agent that can help plan vacations for customers.

Important: When users specify a destination, always plan for that location. Only suggest random destinations when the user hasn't specified a preference.

When the conversation begins, introduce yourself with this message:
"Hello! I'm your TravelAgent assistant. I can help plan vacations and suggest interesting destinations for you. Here are some things you can ask me:
1. Plan a day trip to a specific location
2. Suggest a random vacation destination
3. Find destinations with specific features (beaches, mountains, historical sites, etc.)
4. Plan an alternative trip if you don't like my first suggestion

What kind of trip would you like me to help you plan today?"

Always prioritize user preferences. If they mention a specific destination like "Bali" or "Paris," focus your planning on that location rather than suggesting alternatives.
""";

// Create AI Agent with Advanced Travel Planning Capabilities
// Get the Responses client for the deployment and create the AI agent
// Configure agent with name, detailed instructions, and available tools
// This demonstrates the .NET agent creation pattern with full configuration
AIAgent agent = azureClient
    .GetChatClient(deployment)
    .AsAIAgent(
        name: AGENT_NAME,
        instructions: AGENT_INSTRUCTIONS,
        tools: [AIFunctionFactory.Create(GetRandomDestination)]
    );

// Create New Conversation Session for Context Management
// Initialize a new conversation session to maintain context across multiple interactions
// Sessions enable the agent to remember previous exchanges and maintain conversational state
// This is essential for multi-turn conversations and contextual understanding
await using var session = await agent.CreateSessionAsync();

// Execute Agent: First Travel Planning Request
// Run the agent with an initial request that will likely trigger the random destination tool
// The agent will analyze the request, use the GetRandomDestination tool, and create an itinerary
// Using the session parameter maintains conversation context for subsequent interactions
await foreach (var update in agent.RunStreamingAsync("Plan me a day trip", session))
{
    await Task.Delay(10);
    Console.Write(update);
}

Console.WriteLine();

// Execute Agent: Follow-up Request with Context Awareness
// Demonstrate contextual conversation by referencing the previous response
// The agent remembers the previous destination suggestion and will provide an alternative
// This showcases the power of conversation sessions and contextual understanding in .NET agents
await foreach (var update in agent.RunStreamingAsync("I don't like that destination. Plan me another vacation.", session))
{
    await Task.Delay(10);
    Console.Write(update);
}

αž€αžΆαžšαž”αžŠαž·αžŸαŸαž’: αž―αž€αžŸαžΆαžšαž“αŸαŸ‡αžαŸ’αžšαžΌαžœαž”αžΆαž“αž”αž˜αŸ’αž›αŸ‚αž„αž—αžΆαžŸαžΆ αžŠαŸ„αž™αž”αŸ’αžšαžΎαžŸαŸαžœαžΆαž”αž˜αŸ’αž›αŸ‚αž„αž—αžΆαžŸαžΆ AI Co-op TranslatorαŸ” αž‘αŸ„αŸ‡αž™αžΎαž„αžαŸ’αž‰αž»αŸ†αž˜αžΆαž“αž€αŸ’αžαžΈαž”αŸ’αžšαžΆαžαŸ’αž“αžΆαž±αŸ’αž™αž”αžΆαž“αž…αŸ’αž”αžΆαžŸαŸ‹αž›αžΆαžŸαŸ‹ αžαŸ‚αžŸαžΌαž˜αž™αž›αŸ‹αžŠαžΉαž„αžαžΆαž€αžΆαžšαž”αž˜αŸ’αž›αŸ‚αž„αžŠαŸ„αž™αžŸαŸ’αžœαŸαž™αž”αŸ’αžšαžœαžαŸ’αžαž·αž€αŸαž’αžΆαž…αž˜αžΆαž“αž€αŸ†αž αž»αžŸαž¬αž—αžΆαž–αž˜αž·αž“αžαŸ’αžšαžΉαž˜αžαŸ’αžšαžΌαžœαŸ” αž―αž€αžŸαžΆαžšαžŠαžΎαž˜αž‡αžΆαž—αžΆαžŸαžΆαž‘αžΈαžαžΆαŸ†αž„αž‚αž½αžšαžαŸ’αžšαžΌαžœαž”αžΆαž“αž‚αŸαž”αŸ’αžšαžΎαž‡αžΆαž”αŸ’αžšαž—αž–αž…αŸ’αž”αžΆαžŸαŸ‹αž›αžΆαžŸαŸ‹αŸ” αžŸαž˜αŸ’αžšαžΆαž”αŸ‹αž–αŸαžαŸŒαž˜αžΆαž“αžŸαŸ†αžαžΆαž“αŸ‹αŸ— αžŸαžΌαž˜αžŽαŸ‚αž“αžΆαŸ†αž±αŸ’αž™αž”αŸ’αžšαžΎαž”αŸ’αžšαžΆαžŸαŸ‹αž€αžΆαžšαž”αŸ’αžšαŸ‚αžŠαŸ„αž™αž˜αž“αž»αžŸαŸ’αžŸαž‡αŸ†αž“αžΆαž‰αŸ” αž™αžΎαž„αžαŸ’αž‰αž»αŸ†αž˜αž·αž“αž‘αž‘αž½αž›αžαž»αžŸαžαŸ’αžšαžΌαžœαž…αŸ†αž–αŸ„αŸ‡αž€αžΆαžšαž™αž›αŸ‹αž…αŸ’αžšαž‘αŸ† αž¬αž€αžΆαžšαž”αž€αžŸαŸ’αžšαžΆαž™αžαž»αžŸαž”αž“αŸ’αž‘αžΆαž”αŸ‹αž–αžΈαž€αžΆαžšαž”αŸ’αžšαžΎαž”αŸ’αžšαžΆαžŸαŸ‹αž€αžΆαžšαž”αž˜αŸ’αž›αŸ‚αž„αž“αŸαŸ‡αž“αŸ„αŸ‡αž‘αŸαŸ”