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.NET: Add Foundry Agents Tool Sample - Bing Custom Search (#3701)
* .NET: Add Bing Custom Search sample #3674 * Apply format fixes * .NET: Improve Bing Custom Search sample with dual MEAI/Native SDK options - Add MEAI (Option 1) and Native SDK (Option 2) agent creation patterns - Add DefaultAzureCredential with standard WARNING comment - Add sample to solution file and FoundryAgents README index - Improve README with connection ID/instance name guidance - Fix missing newline at EOF in .csproj - Suppress CS8321 for unused local function pattern Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> * Address PR review comments for Bing Custom Search sample - Add Async suffix to CreateAgentWithMEAI and CreateAgentWithNativeSDK methods - Clarify comment to reference ResponseTool instead of BingCustomSearchTool - Update README Option 1 description to accurately reflect SDK usage Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> --------- Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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<Project Path="samples/GettingStarted/FoundryAgents/FoundryAgents_Step15_ComputerUse/FoundryAgents_Step15_ComputerUse.csproj" />
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<Project Path="samples/GettingStarted/FoundryAgents/FoundryAgents_Step18_FileSearch/FoundryAgents_Step18_FileSearch.csproj" />
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<Project Path="samples/GettingStarted/FoundryAgents/FoundryAgents_Step19_OpenAPITools/FoundryAgents_Step19_OpenAPITools.csproj" />
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<Project Path="samples/GettingStarted/FoundryAgents/FoundryAgents_Step21_BingCustomSearch/FoundryAgents_Step21_BingCustomSearch.csproj" />
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<Project Path="samples/GettingStarted/FoundryAgents/FoundryAgents_Step25_WebSearch/FoundryAgents_Step25_WebSearch.csproj" />
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<Project Path="samples/GettingStarted/FoundryAgents/FoundryAgents_Step26_MemorySearch/FoundryAgents_Step26_MemorySearch.csproj" />
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<Project Path="samples/GettingStarted/FoundryAgents/FoundryAgents_Evaluations_Step01_RedTeaming/FoundryAgents_Evaluations_Step01_RedTeaming.csproj" />
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<Project Sdk="Microsoft.NET.Sdk">
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<PropertyGroup>
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<OutputType>Exe</OutputType>
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<TargetFrameworks>net10.0</TargetFrameworks>
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<Nullable>enable</Nullable>
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<ImplicitUsings>enable</ImplicitUsings>
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<NoWarn>$(NoWarn);CA1812;CS8321</NoWarn>
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</PropertyGroup>
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<ItemGroup>
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<PackageReference Include="Microsoft.Extensions.Logging.Console" />
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<PackageReference Include="Azure.Identity" />
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<PackageReference Include="Azure.AI.Projects" />
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</ItemGroup>
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<ItemGroup>
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<ProjectReference Include="..\..\..\..\src\Microsoft.Agents.AI.AzureAI\Microsoft.Agents.AI.AzureAI.csproj" />
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</ItemGroup>
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</Project>
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// Copyright (c) Microsoft. All rights reserved.
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// This sample shows how to use Bing Custom Search Tool with AI Agents.
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using Azure.AI.Projects;
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using Azure.AI.Projects.OpenAI;
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using Azure.Identity;
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using Microsoft.Agents.AI;
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using OpenAI.Responses;
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string endpoint = Environment.GetEnvironmentVariable("AZURE_FOUNDRY_PROJECT_ENDPOINT") ?? throw new InvalidOperationException("AZURE_FOUNDRY_PROJECT_ENDPOINT is not set.");
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string deploymentName = Environment.GetEnvironmentVariable("AZURE_FOUNDRY_PROJECT_DEPLOYMENT_NAME") ?? "gpt-4o-mini";
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string connectionId = Environment.GetEnvironmentVariable("BING_CUSTOM_SEARCH_PROJECT_CONNECTION_ID") ?? throw new InvalidOperationException("BING_CUSTOM_SEARCH_PROJECT_CONNECTION_ID is not set.");
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string instanceName = Environment.GetEnvironmentVariable("BING_CUSTOM_SEARCH_INSTANCE_NAME") ?? throw new InvalidOperationException("BING_CUSTOM_SEARCH_INSTANCE_NAME is not set.");
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const string AgentInstructions = """
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You are a helpful agent that can use Bing Custom Search tools to assist users.
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Use the available Bing Custom Search tools to answer questions and perform tasks.
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""";
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// Get a client to create/retrieve/delete server side agents with Azure Foundry Agents.
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// WARNING: DefaultAzureCredential is convenient for development but requires careful consideration in production.
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// In production, consider using a specific credential (e.g., ManagedIdentityCredential) to avoid
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// latency issues, unintended credential probing, and potential security risks from fallback mechanisms.
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AIProjectClient aiProjectClient = new(new Uri(endpoint), new DefaultAzureCredential());
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// Bing Custom Search tool parameters shared by both options
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BingCustomSearchToolParameters bingCustomSearchToolParameters = new([
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new BingCustomSearchConfiguration(connectionId, instanceName)
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]);
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AIAgent agent = await CreateAgentWithMEAIAsync();
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// AIAgent agent = await CreateAgentWithNativeSDKAsync();
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Console.WriteLine($"Created agent: {agent.Name}");
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// Run the agent with a search query
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AgentResponse response = await agent.RunAsync("Search for the latest news about Microsoft AI");
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Console.WriteLine("\n=== Agent Response ===");
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foreach (var message in response.Messages)
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{
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Console.WriteLine(message.Text);
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}
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// Cleanup by deleting the agent
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await aiProjectClient.Agents.DeleteAgentAsync(agent.Name);
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Console.WriteLine($"\nDeleted agent: {agent.Name}");
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// --- Agent Creation Options ---
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// Option 1 - Using AsAITool wrapping for the ResponseTool returned by AgentTool.CreateBingCustomSearchTool (MEAI + AgentFramework)
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async Task<AIAgent> CreateAgentWithMEAIAsync()
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{
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return await aiProjectClient.CreateAIAgentAsync(
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model: deploymentName,
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name: "BingCustomSearchAgent-MEAI",
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instructions: AgentInstructions,
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tools: [((ResponseTool)AgentTool.CreateBingCustomSearchTool(bingCustomSearchToolParameters)).AsAITool()]);
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}
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// Option 2 - Using PromptAgentDefinition with AgentTool.CreateBingCustomSearchTool (Native SDK)
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async Task<AIAgent> CreateAgentWithNativeSDKAsync()
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{
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return await aiProjectClient.CreateAIAgentAsync(
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name: "BingCustomSearchAgent-NATIVE",
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creationOptions: new AgentVersionCreationOptions(
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new PromptAgentDefinition(model: deploymentName)
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{
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Instructions = AgentInstructions,
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Tools = {
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(ResponseTool)AgentTool.CreateBingCustomSearchTool(bingCustomSearchToolParameters),
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}
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})
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);
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}
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+63
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# Using Bing Custom Search with AI Agents
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This sample demonstrates how to use the Bing Custom Search tool with AI agents to perform customized web searches.
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## What this sample demonstrates
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- Creating agents with Bing Custom Search capabilities
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- Configuring custom search instances via connection ID and instance name
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- Two agent creation approaches: MEAI abstraction (Option 1) and Native SDK (Option 2)
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- Running search queries through the agent
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- Managing agent lifecycle (creation and deletion)
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## Agent creation options
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This sample provides two approaches for creating agents with Bing Custom Search:
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- **Option 1 - MEAI + AgentFramework**: Uses the Agent Framework `ResponseTool` wrapped with `AsAITool()` to call the `CreateAIAgentAsync` overload that accepts `tools:[]`, while still relying on the same underlying Azure AI Projects SDK types as Option 2.
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- **Option 2 - Native SDK**: Uses `PromptAgentDefinition` with `AgentVersionCreationOptions` to create the agent directly with the Azure AI Projects SDK types.
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Both options produce the same result. Toggle between them by commenting/uncommenting the corresponding `CreateAgentWith*Async` call in `Program.cs`.
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## Prerequisites
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Before you begin, ensure you have the following prerequisites:
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- .NET 10 SDK or later
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- Azure Foundry service endpoint and deployment configured
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- Azure CLI installed and authenticated (for Azure credential authentication)
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- A Bing Custom Search resource configured in Azure and connected to your Foundry project
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**Note**: This demo uses Azure Default credentials for authentication. Make sure you're logged in with `az login` and have access to the Azure Foundry resource.
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Set the following environment variables:
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```powershell
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$env:AZURE_FOUNDRY_PROJECT_ENDPOINT="https://your-foundry-service.services.ai.azure.com/api/projects/your-foundry-project"
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$env:AZURE_FOUNDRY_PROJECT_DEPLOYMENT_NAME="gpt-4o-mini" # Optional, defaults to gpt-4o-mini
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$env:BING_CUSTOM_SEARCH_PROJECT_CONNECTION_ID="/subscriptions/<sub-id>/resourceGroups/<rg>/providers/Microsoft.CognitiveServices/accounts/<account>/projects/<project>/connections/<connection-name>"
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$env:BING_CUSTOM_SEARCH_INSTANCE_NAME="your-configuration-name"
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```
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### Finding the connection ID and instance name
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- **Connection ID**: The full ARM resource path including the `/projects/<name>/connections/<connection-name>` segment. Find the connection name in your Foundry project under **Management center** → **Connected resources**.
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- **Instance Name**: The **configuration name** from the Bing Custom Search resource (Azure portal → your Bing Custom Search resource → **Configurations**). This is _not_ the Azure resource name.
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## Run the sample
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Navigate to the FoundryAgents sample directory and run:
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```powershell
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cd dotnet/samples/GettingStarted/FoundryAgents
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dotnet run --project .\FoundryAgents_Step21_BingCustomSearch
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```
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## Expected behavior
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The sample will:
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1. Create an agent with Bing Custom Search tool capabilities
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2. Run the agent with a search query about Microsoft AI
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3. Display the search results returned by the agent
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4. Clean up resources by deleting the agent
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@@ -58,6 +58,7 @@ Before you begin, ensure you have the following prerequisites:
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|[Using plugins](./FoundryAgents_Step13_Plugins/)|This sample demonstrates how to use plugins with a Foundry agent|
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|[Code interpreter](./FoundryAgents_Step14_CodeInterpreter/)|This sample demonstrates how to use the code interpreter tool with a Foundry agent|
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|[Computer use](./FoundryAgents_Step15_ComputerUse/)|This sample demonstrates how to use computer use capabilities with a Foundry agent|
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|[Bing Custom Search](./FoundryAgents_Step21_BingCustomSearch/)|This sample demonstrates how to use Bing Custom Search tool with a Foundry agent|
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|[Web search](./FoundryAgents_Step25_WebSearch/)|This sample demonstrates how to use the Responses API web search tool with a Foundry agent|
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|[Memory search](./FoundryAgents_Step26_MemorySearch/)|This sample demonstrates how to use memory search tool with a Foundry agent|
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|[File search](./FoundryAgents_Step18_FileSearch/)|This sample demonstrates how to use the file search tool with a Foundry agent|
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