diff --git a/agent-samples/azure/AzureOpenAIAssistants.yaml b/agent-samples/azure/AzureOpenAIAssistants.yaml
index 8c0d889598..f973d05acc 100644
--- a/agent-samples/azure/AzureOpenAIAssistants.yaml
+++ b/agent-samples/azure/AzureOpenAIAssistants.yaml
@@ -1,9 +1,9 @@
kind: Prompt
name: Assistant
description: Helpful assistant
-instructions: You are a helpful assistant. You answer questions is the language specified by the user. You return your answers in a JSON format. You must include Assistants as the type in your response.
+instructions: You are a helpful assistant. You answer questions in the language specified by the user. You return your answers in a JSON format. You must include Assistants as the type in your response.
model:
- id: =Env.AZURE_OPENAI_DEPLOYMENT_NAME
+ id: gpt-4o-mini
provider: AzureOpenAI
apiType: Assistants
options:
@@ -12,14 +12,14 @@ model:
outputSchema:
properties:
language:
- kind: string
+ type: string
required: true
description: The language of the answer.
answer:
- kind: string
+ type: string
required: true
description: The answer text.
type:
- kind: string
+ type: string
required: true
description: The type of the response.
diff --git a/agent-samples/azure/AzureOpenAIChat.yaml b/agent-samples/azure/AzureOpenAIChat.yaml
new file mode 100644
index 0000000000..d02e0c6039
--- /dev/null
+++ b/agent-samples/azure/AzureOpenAIChat.yaml
@@ -0,0 +1,25 @@
+kind: Prompt
+name: Assistant
+description: Helpful assistant
+instructions: You are a helpful assistant. You answer questions in the language specified by the user. You return your answers in a JSON format. You must include Chat as the type in your response.
+model:
+ id: gpt-4o-mini
+ provider: AzureOpenAI
+ apiType: Chat
+ options:
+ temperature: 0.9
+ topP: 0.95
+outputSchema:
+ properties:
+ language:
+ type: string
+ required: true
+ description: The language of the answer.
+ answer:
+ type: string
+ required: true
+ description: The answer text.
+ type:
+ type: string
+ required: true
+ description: The type of the response.
diff --git a/agent-samples/azure/AzureOpenAIResponses.yaml b/agent-samples/azure/AzureOpenAIResponses.yaml
index 5db218ade3..006c1476f4 100644
--- a/agent-samples/azure/AzureOpenAIResponses.yaml
+++ b/agent-samples/azure/AzureOpenAIResponses.yaml
@@ -1,28 +1,25 @@
kind: Prompt
name: Assistant
description: Helpful assistant
-instructions: You are a helpful assistant. You answer questions is the language specified by the user. You return your answers in a JSON format. You must include Responses as the type in your response.
+instructions: You are a helpful assistant. You answer questions in the language specified by the user. You return your answers in a JSON format. You must include Responses as the type in your response.
model:
- id: =Env.AZURE_OPENAI_DEPLOYMENT_NAME
+ id: gpt-4o-mini
provider: AzureOpenAI
apiType: Responses
options:
- text:
- verbosity: medium
- connection:
- kind: remote
- endpoint: =Env.AZURE_OPENAI_ENDPOINT
+ temperature: 0.9
+ topP: 0.95
outputSchema:
properties:
language:
- kind: string
+ type: string
required: true
description: The language of the answer.
answer:
- kind: string
+ type: string
required: true
description: The answer text.
type:
- kind: string
+ type: string
required: true
description: The type of the response.
diff --git a/agent-samples/chatclient/Assistant.yaml b/agent-samples/chatclient/Assistant.yaml
index b34add2d23..3332d54540 100644
--- a/agent-samples/chatclient/Assistant.yaml
+++ b/agent-samples/chatclient/Assistant.yaml
@@ -1,7 +1,7 @@
kind: Prompt
name: Assistant
description: Helpful assistant
-instructions: You are a helpful assistant. You answer questions is the language specified by the user. You return your answers in a JSON format.
+instructions: You are a helpful assistant. You answer questions in the language specified by the user. You return your answers in a JSON format.
model:
options:
temperature: 0.9
@@ -9,10 +9,10 @@ model:
outputSchema:
properties:
language:
- kind: string
+ type: string
required: true
description: The language of the answer.
answer:
- kind: string
+ type: string
required: true
description: The answer text.
diff --git a/agent-samples/chatclient/GetWeather.yaml b/agent-samples/chatclient/GetWeather.yaml
index 9ed637894d..f32411be98 100644
--- a/agent-samples/chatclient/GetWeather.yaml
+++ b/agent-samples/chatclient/GetWeather.yaml
@@ -4,6 +4,8 @@ description: Helpful assistant
instructions: You are a helpful assistant. You answer questions using the tools provided.
model:
options:
+ temperature: 0.9
+ topP: 0.95
allowMultipleToolCalls: true
chatToolMode: auto
tools:
diff --git a/agent-samples/foundry/FoundryAgent.yaml b/agent-samples/foundry/FoundryAgent.yaml
new file mode 100644
index 0000000000..2de2ea069e
--- /dev/null
+++ b/agent-samples/foundry/FoundryAgent.yaml
@@ -0,0 +1,22 @@
+kind: Prompt
+name: Assistant
+description: Helpful assistant
+instructions: You are a helpful assistant. You answer questions in the language specified by the user. You return your answers in a JSON format.
+model:
+ id: gpt-4.1-mini
+ options:
+ temperature: 0.9
+ topP: 0.95
+ connection:
+ kind: Remote
+ endpoint: =Env.AZURE_FOUNDRY_PROJECT_ENDPOINT
+outputSchema:
+ properties:
+ language:
+ type: string
+ required: true
+ description: The language of the answer.
+ answer:
+ type: string
+ required: true
+ description: The answer text.
diff --git a/agent-samples/openai/OpenAIAssistants.yaml b/agent-samples/openai/OpenAIAssistants.yaml
index 78bd48d701..c1f20beb38 100644
--- a/agent-samples/openai/OpenAIAssistants.yaml
+++ b/agent-samples/openai/OpenAIAssistants.yaml
@@ -1,30 +1,28 @@
kind: Prompt
name: Assistant
description: Helpful assistant
-instructions: You are a helpful assistant. You answer questions is the language specified by the user. You return your answers in a JSON format. You must include Assistants as the type in your response.
+instructions: You are a helpful assistant. You answer questions in the language specified by the user. You return your answers in a JSON format. You must include Assistants as the type in your response.
model:
- id: =Env.OPENAI_MODEL
+ id: gpt-4.1-mini
provider: OpenAI
apiType: Assistants
options:
temperature: 0.9
topP: 0.95
connection:
- kind: key
+ kind: ApiKey
key: =Env.OPENAI_APIKEY
outputSchema:
- name: AssistantResponse
- description: The response from the assistant.
properties:
language:
- kind: string
+ type: string
required: true
description: The language of the answer.
answer:
- kind: string
+ type: string
required: true
description: The answer text.
type:
- kind: string
+ type: string
required: true
description: The type of the response.
diff --git a/agent-samples/openai/OpenAIChat.yaml b/agent-samples/openai/OpenAIChat.yaml
new file mode 100644
index 0000000000..832ef4eb15
--- /dev/null
+++ b/agent-samples/openai/OpenAIChat.yaml
@@ -0,0 +1,28 @@
+kind: Prompt
+name: Assistant
+description: Helpful assistant
+instructions: You are a helpful assistant. You answer questions in the language specified by the user. You return your answers in a JSON format. You must include Chat as the type in your response.
+model:
+ id: gpt-4.1-mini
+ provider: OpenAI
+ apiType: Chat
+ options:
+ temperature: 0.9
+ topP: 0.95
+ connection:
+ kind: ApiKey
+ key: =Env.OPENAI_APIKEY
+outputSchema:
+ properties:
+ language:
+ type: string
+ required: true
+ description: The language of the answer.
+ answer:
+ type: string
+ required: true
+ description: The answer text.
+ type:
+ type: string
+ required: true
+ description: The type of the response.
diff --git a/agent-samples/openai/OpenAIResponses.yaml b/agent-samples/openai/OpenAIResponses.yaml
index 0fcda30c9c..efe822233e 100644
--- a/agent-samples/openai/OpenAIResponses.yaml
+++ b/agent-samples/openai/OpenAIResponses.yaml
@@ -1,28 +1,28 @@
kind: Prompt
name: Assistant
description: Helpful assistant
-instructions: You are a helpful assistant. You answer questions is the language specified by the user. You return your answers in a JSON format. You must include Responses as the type in your response.
+instructions: You are a helpful assistant. You answer questions in the language specified by the user. You return your answers in a JSON format. You must include Responses as the type in your response.
model:
- id: =Env.OPENAI_MODEL
+ id: gpt-4.1-mini
provider: OpenAI
apiType: Responses
options:
- text:
- verbosity: medium
+ temperature: 0.9
+ topP: 0.95
connection:
- kind: key
+ kind: ApiKey
key: =Env.OPENAI_APIKEY
outputSchema:
properties:
language:
- kind: string
+ type: string
required: true
description: The language of the answer.
answer:
- kind: string
+ type: string
required: true
description: The answer text.
type:
- kind: string
+ type: string
required: true
description: The type of the response.
diff --git a/dotnet/agent-framework-dotnet.slnx b/dotnet/agent-framework-dotnet.slnx
index 00763b09c8..70ea1603c0 100644
--- a/dotnet/agent-framework-dotnet.slnx
+++ b/dotnet/agent-framework-dotnet.slnx
@@ -78,6 +78,10 @@
+
+
+
+
@@ -343,12 +347,13 @@
-
+
+
@@ -384,11 +389,12 @@
-
+
+
diff --git a/dotnet/samples/GettingStarted/Agents/Agent_Step19_Declarative/Agent_Step19_Declarative.csproj b/dotnet/samples/GettingStarted/Agents/Agent_Step19_Declarative/Agent_Step19_Declarative.csproj
new file mode 100644
index 0000000000..550e1f22cb
--- /dev/null
+++ b/dotnet/samples/GettingStarted/Agents/Agent_Step19_Declarative/Agent_Step19_Declarative.csproj
@@ -0,0 +1,25 @@
+
+
+
+ Exe
+ net10.0
+
+ enable
+ enable
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/dotnet/samples/GettingStarted/Agents/Agent_Step19_Declarative/Program.cs b/dotnet/samples/GettingStarted/Agents/Agent_Step19_Declarative/Program.cs
new file mode 100644
index 0000000000..1fc985b3bb
--- /dev/null
+++ b/dotnet/samples/GettingStarted/Agents/Agent_Step19_Declarative/Program.cs
@@ -0,0 +1,54 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+// This sample shows how to create an agent from a YAML based declarative representation.
+
+using Azure.AI.OpenAI;
+using Azure.Identity;
+using Microsoft.Agents.AI;
+using Microsoft.Extensions.AI;
+
+var endpoint = Environment.GetEnvironmentVariable("AZURE_OPENAI_ENDPOINT") ?? throw new InvalidOperationException("AZURE_OPENAI_ENDPOINT is not set.");
+var deploymentName = Environment.GetEnvironmentVariable("AZURE_OPENAI_DEPLOYMENT_NAME") ?? "gpt-4o-mini";
+
+// Create the chat client
+IChatClient chatClient = new AzureOpenAIClient(
+ new Uri(endpoint),
+ new AzureCliCredential())
+ .GetChatClient(deploymentName)
+ .AsIChatClient();
+
+// Define the agent using a YAML definition.
+var text =
+ """
+ kind: Prompt
+ name: Assistant
+ description: Helpful assistant
+ instructions: You are a helpful assistant. You answer questions in the language specified by the user. You return your answers in a JSON format.
+ model:
+ options:
+ temperature: 0.9
+ topP: 0.95
+ outputSchema:
+ properties:
+ language:
+ type: string
+ required: true
+ description: The language of the answer.
+ answer:
+ type: string
+ required: true
+ description: The answer text.
+ """;
+
+// Create the agent from the YAML definition.
+var agentFactory = new ChatClientPromptAgentFactory(chatClient);
+var agent = await agentFactory.CreateFromYamlAsync(text);
+
+// Invoke the agent and output the text result.
+Console.WriteLine(await agent!.RunAsync("Tell me a joke about a pirate in English."));
+
+// Invoke the agent with streaming support.
+await foreach (var update in agent!.RunStreamingAsync("Tell me a joke about a pirate in French."))
+{
+ Console.WriteLine(update);
+}
diff --git a/dotnet/samples/GettingStarted/Agents/README.md b/dotnet/samples/GettingStarted/Agents/README.md
index cbe4b65047..d023d6455c 100644
--- a/dotnet/samples/GettingStarted/Agents/README.md
+++ b/dotnet/samples/GettingStarted/Agents/README.md
@@ -45,6 +45,7 @@ Before you begin, ensure you have the following prerequisites:
|[Reducing chat history size](./Agent_Step16_ChatReduction/)|This sample demonstrates how to reduce the chat history to constrain its size, where chat history is maintained locally|
|[Background responses](./Agent_Step17_BackgroundResponses/)|This sample demonstrates how to use background responses for long-running operations with polling and resumption support|
|[Deep research with an agent](./Agent_Step18_DeepResearch/)|This sample demonstrates how to use the Deep Research Tool to perform comprehensive research on complex topics|
+|[Declarative agent](./Agent_Step19_Declarative/)|This sample demonstrates how to declaratively define an agent.|
## Running the samples from the console
diff --git a/dotnet/samples/GettingStarted/DeclarativeAgents/ChatClient/DeclarativeChatClientAgents.csproj b/dotnet/samples/GettingStarted/DeclarativeAgents/ChatClient/DeclarativeChatClientAgents.csproj
new file mode 100644
index 0000000000..0fc316acac
--- /dev/null
+++ b/dotnet/samples/GettingStarted/DeclarativeAgents/ChatClient/DeclarativeChatClientAgents.csproj
@@ -0,0 +1,25 @@
+
+
+
+ Exe
+ net10.0
+
+ enable
+ enable
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/dotnet/samples/GettingStarted/DeclarativeAgents/ChatClient/Program.cs b/dotnet/samples/GettingStarted/DeclarativeAgents/ChatClient/Program.cs
new file mode 100644
index 0000000000..bed16f496a
--- /dev/null
+++ b/dotnet/samples/GettingStarted/DeclarativeAgents/ChatClient/Program.cs
@@ -0,0 +1,55 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+// This sample shows how to load an AI agent from a YAML file and process a prompt using Azure OpenAI as the backend.
+
+using System.ComponentModel;
+using Azure.AI.OpenAI;
+using Azure.Identity;
+using Microsoft.Agents.AI;
+using Microsoft.Extensions.AI;
+
+var endpoint = Environment.GetEnvironmentVariable("AZURE_OPENAI_ENDPOINT") ?? throw new InvalidOperationException("AZURE_OPENAI_ENDPOINT is not set.");
+var deploymentName = Environment.GetEnvironmentVariable("AZURE_OPENAI_DEPLOYMENT_NAME") ?? "gpt-4o-mini";
+
+// Create the chat client
+IChatClient chatClient = new AzureOpenAIClient(
+ new Uri(endpoint),
+ new AzureCliCredential())
+ .GetChatClient(deploymentName)
+ .AsIChatClient();
+
+// Read command-line arguments
+if (args.Length < 2)
+{
+ Console.WriteLine("Usage: DeclarativeAgents ");
+ Console.WriteLine(" : The path to the YAML file containing the agent definition");
+ Console.WriteLine(" : The prompt to send to the agent");
+ return;
+}
+
+var yamlFilePath = args[0];
+var prompt = args[1];
+
+// Verify the YAML file exists
+if (!File.Exists(yamlFilePath))
+{
+ Console.WriteLine($"Error: File not found: {yamlFilePath}");
+ return;
+}
+
+// Read the YAML content from the file
+var text = await File.ReadAllTextAsync(yamlFilePath);
+
+// Example function tool that can be used by the agent.
+[Description("Get the weather for a given location.")]
+static string GetWeather(
+ [Description("The city and state, e.g. San Francisco, CA")] string location,
+ [Description("The unit of temperature. Possible values are 'celsius' and 'fahrenheit'.")] string unit)
+ => $"The weather in {location} is cloudy with a high of {(unit.Equals("celsius", StringComparison.Ordinal) ? "15°C" : "59°F")}.";
+
+// Create the agent from the YAML definition.
+var agentFactory = new ChatClientPromptAgentFactory(chatClient, [AIFunctionFactory.Create(GetWeather, "GetWeather")]);
+var agent = await agentFactory.CreateFromYamlAsync(text);
+
+// Invoke the agent and output the text result.
+Console.WriteLine(await agent!.RunAsync(prompt));
diff --git a/dotnet/samples/GettingStarted/DeclarativeAgents/ChatClient/Properties/launchSettings.json b/dotnet/samples/GettingStarted/DeclarativeAgents/ChatClient/Properties/launchSettings.json
new file mode 100644
index 0000000000..5ec486626c
--- /dev/null
+++ b/dotnet/samples/GettingStarted/DeclarativeAgents/ChatClient/Properties/launchSettings.json
@@ -0,0 +1,12 @@
+{
+ "profiles": {
+ "GetWeather": {
+ "commandName": "Project",
+ "commandLineArgs": "..\\..\\..\\..\\..\\..\\..\\..\\agent-samples\\chatclient\\GetWeather.yaml \"What is the weather in Cambridge, MA in °C?\""
+ },
+ "Assistant": {
+ "commandName": "Project",
+ "commandLineArgs": "..\\..\\..\\..\\..\\..\\..\\..\\agent-samples\\chatclient\\Assistant.yaml \"Tell me a joke about a pirate in Italian.\""
+ }
+ }
+}
\ No newline at end of file
diff --git a/dotnet/src/Microsoft.Agents.AI.Declarative/AgentBotElementYaml.cs b/dotnet/src/Microsoft.Agents.AI.Declarative/AgentBotElementYaml.cs
new file mode 100644
index 0000000000..808bf76462
--- /dev/null
+++ b/dotnet/src/Microsoft.Agents.AI.Declarative/AgentBotElementYaml.cs
@@ -0,0 +1,91 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using System;
+using System.Diagnostics.CodeAnalysis;
+using System.IO;
+using System.Linq;
+using Microsoft.Bot.ObjectModel;
+using Microsoft.Bot.ObjectModel.Abstractions;
+using Microsoft.Bot.ObjectModel.Yaml;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Shared.Diagnostics;
+
+namespace Microsoft.Agents.AI;
+
+///
+/// Helper methods for creating from YAML.
+///
+internal static class AgentBotElementYaml
+{
+ ///
+ /// Convert the given YAML text to a model.
+ ///
+ /// YAML representation of the to use to create the prompt function.
+ /// Optional instance which provides environment variables to the template.
+ [RequiresDynamicCode("Calls YamlDotNet.Serialization.DeserializerBuilder.DeserializerBuilder()")]
+ public static GptComponentMetadata FromYaml(string text, IConfiguration? configuration = null)
+ {
+ Throw.IfNullOrEmpty(text);
+
+ using var yamlReader = new StringReader(text);
+ BotElement rootElement = YamlSerializer.Deserialize(yamlReader) ?? throw new InvalidDataException("Text does not contain a valid agent definition.");
+
+ if (rootElement is not GptComponentMetadata promptAgent)
+ {
+ throw new InvalidDataException($"Unsupported root element: {rootElement.GetType().Name}. Expected an {nameof(GptComponentMetadata)}.");
+ }
+
+ var botDefinition = WrapPromptAgentWithBot(promptAgent, configuration);
+
+ return botDefinition.Descendants().OfType().First();
+ }
+
+ #region private
+ private sealed class AgentFeatureConfiguration : IFeatureConfiguration
+ {
+ public long GetInt64Value(string settingName, long defaultValue) => defaultValue;
+
+ public string GetStringValue(string settingName, string defaultValue) => defaultValue;
+
+ public bool IsEnvironmentFeatureEnabled(string featureName, bool defaultValue) => true;
+
+ public bool IsTenantFeatureEnabled(string featureName, bool defaultValue) => defaultValue;
+ }
+
+ public static BotDefinition WrapPromptAgentWithBot(this GptComponentMetadata element, IConfiguration? configuration = null)
+ {
+ var botBuilder =
+ new BotDefinition.Builder
+ {
+ Components =
+ {
+ new GptComponent.Builder
+ {
+ SchemaName = "default-schema",
+ Metadata = element.ToBuilder(),
+ }
+ }
+ };
+
+ if (configuration is not null)
+ {
+ foreach (var kvp in configuration.AsEnumerable().Where(kvp => kvp.Value is not null))
+ {
+ botBuilder.EnvironmentVariables.Add(new EnvironmentVariableDefinition.Builder()
+ {
+ SchemaName = kvp.Key,
+ Id = Guid.NewGuid(),
+ DisplayName = kvp.Key,
+ ValueComponent = new EnvironmentVariableValue.Builder()
+ {
+ Id = Guid.NewGuid(),
+ Value = kvp.Value!,
+ },
+ });
+ }
+ }
+
+ return botBuilder.Build();
+ }
+ #endregion
+}
diff --git a/dotnet/src/Microsoft.Agents.AI.Declarative/AggregatorPromptAgentFactory.cs b/dotnet/src/Microsoft.Agents.AI.Declarative/AggregatorPromptAgentFactory.cs
new file mode 100644
index 0000000000..49027367f1
--- /dev/null
+++ b/dotnet/src/Microsoft.Agents.AI.Declarative/AggregatorPromptAgentFactory.cs
@@ -0,0 +1,50 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using System.Threading;
+using System.Threading.Tasks;
+using Microsoft.Bot.ObjectModel;
+using Microsoft.Shared.Diagnostics;
+
+namespace Microsoft.Agents.AI;
+
+///
+/// Provides a which aggregates multiple agent factories.
+///
+public sealed class AggregatorPromptAgentFactory : PromptAgentFactory
+{
+ private readonly PromptAgentFactory[] _agentFactories;
+
+ /// Initializes the instance.
+ /// Ordered instances to aggregate.
+ ///
+ /// Where multiple instances are provided, the first factory that supports the will be used.
+ ///
+ public AggregatorPromptAgentFactory(params PromptAgentFactory[] agentFactories)
+ {
+ Throw.IfNullOrEmpty(agentFactories);
+
+ foreach (PromptAgentFactory agentFactory in agentFactories)
+ {
+ Throw.IfNull(agentFactory, nameof(agentFactories));
+ }
+
+ this._agentFactories = agentFactories;
+ }
+
+ ///
+ public override async Task TryCreateAsync(GptComponentMetadata promptAgent, CancellationToken cancellationToken = default)
+ {
+ Throw.IfNull(promptAgent);
+
+ foreach (var agentFactory in this._agentFactories)
+ {
+ var agent = await agentFactory.TryCreateAsync(promptAgent, cancellationToken).ConfigureAwait(false);
+ if (agent is not null)
+ {
+ return agent;
+ }
+ }
+
+ return null;
+ }
+}
diff --git a/dotnet/src/Microsoft.Agents.AI.Declarative/ChatClient/ChatClientPromptAgentFactory.cs b/dotnet/src/Microsoft.Agents.AI.Declarative/ChatClient/ChatClientPromptAgentFactory.cs
new file mode 100644
index 0000000000..814eac70aa
--- /dev/null
+++ b/dotnet/src/Microsoft.Agents.AI.Declarative/ChatClient/ChatClientPromptAgentFactory.cs
@@ -0,0 +1,55 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using System.Collections.Generic;
+using System.Threading;
+using System.Threading.Tasks;
+using Microsoft.Bot.ObjectModel;
+using Microsoft.Extensions.AI;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.Logging;
+using Microsoft.PowerFx;
+using Microsoft.Shared.Diagnostics;
+
+namespace Microsoft.Agents.AI;
+
+///
+/// Provides an which creates instances of .
+///
+public sealed class ChatClientPromptAgentFactory : PromptAgentFactory
+{
+ ///
+ /// Creates a new instance of the class.
+ ///
+ public ChatClientPromptAgentFactory(IChatClient chatClient, IList? functions = null, RecalcEngine? engine = null, IConfiguration? configuration = null, ILoggerFactory? loggerFactory = null) : base(engine, configuration)
+ {
+ Throw.IfNull(chatClient);
+
+ this._chatClient = chatClient;
+ this._functions = functions;
+ this._loggerFactory = loggerFactory;
+ }
+
+ ///
+ public override Task TryCreateAsync(GptComponentMetadata promptAgent, CancellationToken cancellationToken = default)
+ {
+ Throw.IfNull(promptAgent);
+
+ var options = new ChatClientAgentOptions()
+ {
+ Name = promptAgent.Name,
+ Description = promptAgent.Description,
+ Instructions = promptAgent.Instructions?.ToTemplateString(),
+ ChatOptions = promptAgent.GetChatOptions(this.Engine, this._functions),
+ };
+
+ var agent = new ChatClientAgent(this._chatClient, options, this._loggerFactory);
+
+ return Task.FromResult(agent);
+ }
+
+ #region private
+ private readonly IChatClient _chatClient;
+ private readonly IList? _functions;
+ private readonly ILoggerFactory? _loggerFactory;
+ #endregion
+}
diff --git a/dotnet/src/Microsoft.Agents.AI.Declarative/Extensions/BoolExpressionExtensions.cs b/dotnet/src/Microsoft.Agents.AI.Declarative/Extensions/BoolExpressionExtensions.cs
new file mode 100644
index 0000000000..9926e0e6be
--- /dev/null
+++ b/dotnet/src/Microsoft.Agents.AI.Declarative/Extensions/BoolExpressionExtensions.cs
@@ -0,0 +1,56 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using Microsoft.PowerFx;
+using Microsoft.PowerFx.Types;
+
+namespace Microsoft.Bot.ObjectModel;
+
+///
+/// Extension methods for .
+///
+internal static class BoolExpressionExtensions
+{
+ ///
+ /// Evaluates the given using the provided .
+ ///
+ /// Expression to evaluate.
+ /// Recalc engine to use for evaluation.
+ /// The evaluated boolean value, or null if the expression is null or cannot be evaluated.
+ internal static bool? Eval(this BoolExpression? expression, RecalcEngine? engine)
+ {
+ if (expression is null)
+ {
+ return null;
+ }
+
+ if (expression.IsLiteral)
+ {
+ return expression.LiteralValue;
+ }
+
+ if (engine is null)
+ {
+ return null;
+ }
+
+ if (expression.IsExpression)
+ {
+ return engine.Eval(expression.ExpressionText!).AsBoolean();
+ }
+ else if (expression.IsVariableReference)
+ {
+ var formulaValue = engine.Eval(expression.VariableReference!.VariableName);
+ if (formulaValue is BooleanValue booleanValue)
+ {
+ return booleanValue.Value;
+ }
+
+ if (formulaValue is StringValue stringValue && bool.TryParse(stringValue.Value, out bool result))
+ {
+ return result;
+ }
+ }
+
+ return null;
+ }
+}
diff --git a/dotnet/src/Microsoft.Agents.AI.Declarative/Extensions/CodeInterpreterToolExtensions.cs b/dotnet/src/Microsoft.Agents.AI.Declarative/Extensions/CodeInterpreterToolExtensions.cs
new file mode 100644
index 0000000000..e6f13d5f54
--- /dev/null
+++ b/dotnet/src/Microsoft.Agents.AI.Declarative/Extensions/CodeInterpreterToolExtensions.cs
@@ -0,0 +1,23 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using Microsoft.Extensions.AI;
+using Microsoft.Shared.Diagnostics;
+
+namespace Microsoft.Bot.ObjectModel;
+
+///
+/// Extension methods for .
+///
+internal static class CodeInterpreterToolExtensions
+{
+ ///
+ /// Creates a from a .
+ ///
+ /// Instance of
+ internal static HostedCodeInterpreterTool AsCodeInterpreterTool(this CodeInterpreterTool tool)
+ {
+ Throw.IfNull(tool);
+
+ return new HostedCodeInterpreterTool();
+ }
+}
diff --git a/dotnet/src/Microsoft.Agents.AI.Declarative/Extensions/FileSearchToolExtensions.cs b/dotnet/src/Microsoft.Agents.AI.Declarative/Extensions/FileSearchToolExtensions.cs
new file mode 100644
index 0000000000..5e1cb1bb5f
--- /dev/null
+++ b/dotnet/src/Microsoft.Agents.AI.Declarative/Extensions/FileSearchToolExtensions.cs
@@ -0,0 +1,28 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using System.Linq;
+using Microsoft.Extensions.AI;
+using Microsoft.Shared.Diagnostics;
+
+namespace Microsoft.Bot.ObjectModel;
+
+///
+/// Extension methods for .
+///
+internal static class FileSearchToolExtensions
+{
+ ///
+ /// Create a from a .
+ ///
+ /// Instance of
+ internal static HostedFileSearchTool CreateFileSearchTool(this FileSearchTool tool)
+ {
+ Throw.IfNull(tool);
+
+ return new HostedFileSearchTool()
+ {
+ MaximumResultCount = (int?)tool.MaximumResultCount?.LiteralValue,
+ Inputs = tool.VectorStoreIds?.LiteralValue.Select(id => (AIContent)new HostedVectorStoreContent(id)).ToList(),
+ };
+ }
+}
diff --git a/dotnet/src/Microsoft.Agents.AI.Declarative/Extensions/FunctionToolExtensions.cs b/dotnet/src/Microsoft.Agents.AI.Declarative/Extensions/FunctionToolExtensions.cs
new file mode 100644
index 0000000000..2c54d7e749
--- /dev/null
+++ b/dotnet/src/Microsoft.Agents.AI.Declarative/Extensions/FunctionToolExtensions.cs
@@ -0,0 +1,61 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using System.Collections.Generic;
+using System.Linq;
+using System.Text.Json;
+using Microsoft.Extensions.AI;
+using Microsoft.Shared.Diagnostics;
+
+namespace Microsoft.Bot.ObjectModel;
+
+///
+/// Extension methods for .
+///
+internal static class FunctionToolExtensions
+{
+ ///
+ /// Creates a from a .
+ ///
+ ///
+ /// If a matching function already exists in the provided list, it will be returned.
+ /// Otherwise, a new function declaration will be created.
+ ///
+ /// Instance of
+ /// Instance of
+ internal static AITool CreateOrGetAITool(this InvokeClientTaskAction tool, IList? functions)
+ {
+ Throw.IfNull(tool);
+ Throw.IfNull(tool.Name);
+
+ // use the tool from the provided list if it exists
+ if (functions is not null)
+ {
+ var function = functions.FirstOrDefault(f => tool.Matches(f));
+
+ if (function is not null)
+ {
+ return function;
+ }
+ }
+
+ return AIFunctionFactory.CreateDeclaration(
+ name: tool.Name,
+ description: tool.Description,
+ jsonSchema: tool.ClientActionInputSchema?.GetSchema() ?? s_defaultSchema);
+ }
+
+ ///
+ /// Checks if a matches an .
+ ///
+ /// Instance of
+ /// Instance of
+ internal static bool Matches(this InvokeClientTaskAction tool, AIFunction aiFunc)
+ {
+ Throw.IfNull(tool);
+ Throw.IfNull(aiFunc);
+
+ return tool.Name == aiFunc.Name;
+ }
+
+ private static readonly JsonElement s_defaultSchema = JsonDocument.Parse("{\"type\":\"object\",\"properties\":{},\"additionalProperties\":false}").RootElement;
+}
diff --git a/dotnet/src/Microsoft.Agents.AI.Declarative/Extensions/IntExpressionExtensions.cs b/dotnet/src/Microsoft.Agents.AI.Declarative/Extensions/IntExpressionExtensions.cs
new file mode 100644
index 0000000000..479d6ccea3
--- /dev/null
+++ b/dotnet/src/Microsoft.Agents.AI.Declarative/Extensions/IntExpressionExtensions.cs
@@ -0,0 +1,57 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using System.Globalization;
+using Microsoft.PowerFx;
+using Microsoft.PowerFx.Types;
+
+namespace Microsoft.Bot.ObjectModel;
+
+///
+/// Extension methods for .
+///
+internal static class IntExpressionExtensions
+{
+ ///
+ /// Evaluates the given using the provided .
+ ///
+ /// Expression to evaluate.
+ /// Recalc engine to use for evaluation.
+ /// The evaluated integer value, or null if the expression is null or cannot be evaluated.
+ internal static long? Eval(this IntExpression? expression, RecalcEngine? engine)
+ {
+ if (expression is null)
+ {
+ return null;
+ }
+
+ if (expression.IsLiteral)
+ {
+ return expression.LiteralValue;
+ }
+
+ if (engine is null)
+ {
+ return null;
+ }
+
+ if (expression.IsExpression)
+ {
+ return (long)engine.Eval(expression.ExpressionText!).AsDouble();
+ }
+ else if (expression.IsVariableReference)
+ {
+ var formulaValue = engine.Eval(expression.VariableReference!.VariableName);
+ if (formulaValue is NumberValue numberValue)
+ {
+ return (long)numberValue.Value;
+ }
+
+ if (formulaValue is StringValue stringValue && int.TryParse(stringValue.Value, NumberStyles.Integer, CultureInfo.InvariantCulture, out int result))
+ {
+ return result;
+ }
+ }
+
+ return null;
+ }
+}
diff --git a/dotnet/src/Microsoft.Agents.AI.Declarative/Extensions/McpServerToolApprovalModeExtensions.cs b/dotnet/src/Microsoft.Agents.AI.Declarative/Extensions/McpServerToolApprovalModeExtensions.cs
new file mode 100644
index 0000000000..ee5632368b
--- /dev/null
+++ b/dotnet/src/Microsoft.Agents.AI.Declarative/Extensions/McpServerToolApprovalModeExtensions.cs
@@ -0,0 +1,30 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using Microsoft.Extensions.AI;
+
+namespace Microsoft.Bot.ObjectModel;
+
+///
+/// Extension methods for .
+///
+internal static class McpServerToolApprovalModeExtensions
+{
+ ///
+ /// Converts a to a .
+ ///
+ /// Instance of
+ internal static HostedMcpServerToolApprovalMode AsHostedMcpServerToolApprovalMode(this McpServerToolApprovalMode mode)
+ {
+ return mode switch
+ {
+ McpServerToolNeverRequireApprovalMode => HostedMcpServerToolApprovalMode.NeverRequire,
+ McpServerToolAlwaysRequireApprovalMode => HostedMcpServerToolApprovalMode.AlwaysRequire,
+ McpServerToolRequireSpecificApprovalMode specificMode =>
+ HostedMcpServerToolApprovalMode.RequireSpecific(
+ specificMode?.AlwaysRequireApprovalToolNames?.LiteralValue ?? [],
+ specificMode?.NeverRequireApprovalToolNames?.LiteralValue ?? []
+ ),
+ _ => HostedMcpServerToolApprovalMode.AlwaysRequire,
+ };
+ }
+}
diff --git a/dotnet/src/Microsoft.Agents.AI.Declarative/Extensions/McpServerToolExtensions.cs b/dotnet/src/Microsoft.Agents.AI.Declarative/Extensions/McpServerToolExtensions.cs
new file mode 100644
index 0000000000..763e402625
--- /dev/null
+++ b/dotnet/src/Microsoft.Agents.AI.Declarative/Extensions/McpServerToolExtensions.cs
@@ -0,0 +1,35 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using System;
+using Microsoft.Extensions.AI;
+using Microsoft.Shared.Diagnostics;
+
+namespace Microsoft.Bot.ObjectModel;
+
+///
+/// Extension methods for .
+///
+internal static class McpServerToolExtensions
+{
+ ///
+ /// Creates a from a .
+ ///
+ /// Instance of
+ internal static HostedMcpServerTool CreateHostedMcpTool(this McpServerTool tool)
+ {
+ Throw.IfNull(tool);
+ Throw.IfNull(tool.ServerName?.LiteralValue);
+ Throw.IfNull(tool.Connection);
+
+ var connection = tool.Connection as AnonymousConnection ?? throw new ArgumentException("Only AnonymousConnection is supported for MCP Server Tool connections.", nameof(tool));
+ var serverUrl = connection.Endpoint?.LiteralValue;
+ Throw.IfNullOrEmpty(serverUrl, nameof(connection.Endpoint));
+
+ return new HostedMcpServerTool(tool.ServerName.LiteralValue, serverUrl)
+ {
+ ServerDescription = tool.ServerDescription?.LiteralValue,
+ AllowedTools = tool.AllowedTools?.LiteralValue,
+ ApprovalMode = tool.ApprovalMode?.AsHostedMcpServerToolApprovalMode(),
+ };
+ }
+}
diff --git a/dotnet/src/Microsoft.Agents.AI.Declarative/Extensions/ModelOptionsExtensions.cs b/dotnet/src/Microsoft.Agents.AI.Declarative/Extensions/ModelOptionsExtensions.cs
new file mode 100644
index 0000000000..7ad4d26a6b
--- /dev/null
+++ b/dotnet/src/Microsoft.Agents.AI.Declarative/Extensions/ModelOptionsExtensions.cs
@@ -0,0 +1,66 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using System;
+using System.Linq;
+using Microsoft.Extensions.AI;
+using Microsoft.Shared.Diagnostics;
+
+namespace Microsoft.Bot.ObjectModel;
+
+///
+/// Extension methods for .
+///
+internal static class ModelOptionsExtensions
+{
+ ///
+ /// Converts the 'chatToolMode' property from a to a .
+ ///
+ /// Instance of
+ internal static ChatToolMode? AsChatToolMode(this ModelOptions modelOptions)
+ {
+ Throw.IfNull(modelOptions);
+
+ var mode = modelOptions.ExtensionData?.GetPropertyOrNull(InitializablePropertyPath.Create("chatToolMode"))?.Value;
+ if (mode is null)
+ {
+ return null;
+ }
+
+ return mode switch
+ {
+ "auto" => ChatToolMode.Auto,
+ "none" => ChatToolMode.None,
+ "require_any" => ChatToolMode.RequireAny,
+ _ => ChatToolMode.RequireSpecific(mode),
+ };
+ }
+
+ ///
+ /// Retrieves the 'additional_properties' property from a .
+ ///
+ /// Instance of
+ /// List of properties which should not be included in additional properties.
+ internal static AdditionalPropertiesDictionary? GetAdditionalProperties(this ModelOptions modelOptions, string[] excludedProperties)
+ {
+ Throw.IfNull(modelOptions);
+
+ var options = modelOptions.ExtensionData;
+ if (options is null || options.Properties.Count == 0)
+ {
+ return null;
+ }
+
+ var additionalProperties = options.Properties
+ .Where(kvp => !excludedProperties.Contains(kvp.Key))
+ .ToDictionary(
+ kvp => kvp.Key,
+ kvp => kvp.Value?.ToObject());
+
+ if (additionalProperties is null || additionalProperties.Count == 0)
+ {
+ return null;
+ }
+
+ return new AdditionalPropertiesDictionary(additionalProperties);
+ }
+}
diff --git a/dotnet/src/Microsoft.Agents.AI.Declarative/Extensions/NumberExpressionExtensions.cs b/dotnet/src/Microsoft.Agents.AI.Declarative/Extensions/NumberExpressionExtensions.cs
new file mode 100644
index 0000000000..cfa36185cc
--- /dev/null
+++ b/dotnet/src/Microsoft.Agents.AI.Declarative/Extensions/NumberExpressionExtensions.cs
@@ -0,0 +1,57 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using System.Globalization;
+using Microsoft.PowerFx;
+using Microsoft.PowerFx.Types;
+
+namespace Microsoft.Bot.ObjectModel;
+
+///
+/// Extension methods for .
+///
+internal static class NumberExpressionExtensions
+{
+ ///
+ /// Evaluates the given using the provided .
+ ///
+ /// Expression to evaluate.
+ /// Recalc engine to use for evaluation.
+ /// The evaluated number value, or null if the expression is null or cannot be evaluated.
+ internal static double? Eval(this NumberExpression? expression, RecalcEngine? engine)
+ {
+ if (expression is null)
+ {
+ return null;
+ }
+
+ if (expression.IsLiteral)
+ {
+ return expression.LiteralValue;
+ }
+
+ if (engine is null)
+ {
+ return null;
+ }
+
+ if (expression.IsExpression)
+ {
+ return engine.Eval(expression.ExpressionText!).AsDouble();
+ }
+ else if (expression.IsVariableReference)
+ {
+ var formulaValue = engine.Eval(expression.VariableReference!.VariableName);
+ if (formulaValue is NumberValue numberValue)
+ {
+ return numberValue.Value;
+ }
+
+ if (formulaValue is StringValue stringValue && double.TryParse(stringValue.Value, NumberStyles.Float, CultureInfo.InvariantCulture, out double result))
+ {
+ return result;
+ }
+ }
+
+ return null;
+ }
+}
diff --git a/dotnet/src/Microsoft.Agents.AI.Declarative/Extensions/PromptAgentExtensions.cs b/dotnet/src/Microsoft.Agents.AI.Declarative/Extensions/PromptAgentExtensions.cs
new file mode 100644
index 0000000000..b85452119c
--- /dev/null
+++ b/dotnet/src/Microsoft.Agents.AI.Declarative/Extensions/PromptAgentExtensions.cs
@@ -0,0 +1,114 @@
+// Copyright (c) Microsoft. All rights reserved.
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Microsoft.Extensions.AI;
+using Microsoft.PowerFx;
+using Microsoft.Shared.Diagnostics;
+
+namespace Microsoft.Bot.ObjectModel;
+
+///
+/// Extension methods for .
+///
+public static class PromptAgentExtensions
+{
+ ///
+ /// Retrieves the 'options' property from a as a instance.
+ ///
+ /// Instance of
+ /// Instance of
+ /// Instance of
+ public static ChatOptions? GetChatOptions(this GptComponentMetadata promptAgent, RecalcEngine? engine, IList? functions)
+ {
+ Throw.IfNull(promptAgent);
+
+ var outputSchema = promptAgent.OutputType;
+ var modelOptions = promptAgent.Model?.Options;
+
+ var tools = promptAgent.GetAITools(functions);
+
+ if (modelOptions is null && tools is null)
+ {
+ return null;
+ }
+
+ return new ChatOptions()
+ {
+ Instructions = promptAgent.ResponseInstructions?.ToTemplateString(),
+ Temperature = (float?)modelOptions?.Temperature?.Eval(engine),
+ MaxOutputTokens = (int?)modelOptions?.MaxOutputTokens?.Eval(engine),
+ TopP = (float?)modelOptions?.TopP?.Eval(engine),
+ TopK = (int?)modelOptions?.TopK?.Eval(engine),
+ FrequencyPenalty = (float?)modelOptions?.FrequencyPenalty?.Eval(engine),
+ PresencePenalty = (float?)modelOptions?.PresencePenalty?.Eval(engine),
+ Seed = modelOptions?.Seed?.Eval(engine),
+ ResponseFormat = outputSchema?.AsChatResponseFormat(),
+ ModelId = promptAgent.Model?.ModelNameHint,
+ StopSequences = modelOptions?.StopSequences,
+ AllowMultipleToolCalls = modelOptions?.AllowMultipleToolCalls?.Eval(engine),
+ ToolMode = modelOptions?.AsChatToolMode(),
+ Tools = tools,
+ AdditionalProperties = modelOptions?.GetAdditionalProperties(s_chatOptionProperties),
+ };
+ }
+
+ ///
+ /// Retrieves the 'tools' property from a .
+ ///
+ /// Instance of
+ /// Instance of
+ internal static List? GetAITools(this GptComponentMetadata promptAgent, IList? functions)
+ {
+ return promptAgent.Tools.Select(tool =>
+ {
+ return tool switch
+ {
+ CodeInterpreterTool => ((CodeInterpreterTool)tool).AsCodeInterpreterTool(),
+ InvokeClientTaskAction => ((InvokeClientTaskAction)tool).CreateOrGetAITool(functions),
+ McpServerTool => ((McpServerTool)tool).CreateHostedMcpTool(),
+ FileSearchTool => ((FileSearchTool)tool).CreateFileSearchTool(),
+ WebSearchTool => ((WebSearchTool)tool).CreateWebSearchTool(),
+ _ => throw new NotSupportedException($"Unable to create tool definition because of unsupported tool type: {tool.Kind}, supported tool types are: {string.Join(",", s_validToolKinds)}"),
+ };
+ }).ToList() ?? [];
+ }
+
+ #region private
+ private const string CodeInterpreterKind = "codeInterpreter";
+ private const string FileSearchKind = "fileSearch";
+ private const string FunctionKind = "function";
+ private const string WebSearchKind = "webSearch";
+ private const string McpKind = "mcp";
+
+ private static readonly string[] s_validToolKinds =
+ [
+ CodeInterpreterKind,
+ FileSearchKind,
+ FunctionKind,
+ WebSearchKind,
+ McpKind
+ ];
+
+ private static readonly string[] s_chatOptionProperties =
+ [
+ "allowMultipleToolCalls",
+ "conversationId",
+ "chatToolMode",
+ "frequencyPenalty",
+ "additionalInstructions",
+ "maxOutputTokens",
+ "modelId",
+ "presencePenalty",
+ "responseFormat",
+ "seed",
+ "stopSequences",
+ "temperature",
+ "topK",
+ "topP",
+ "toolMode",
+ "tools",
+ ];
+
+ #endregion
+}
diff --git a/dotnet/src/Microsoft.Agents.AI.Declarative/Extensions/PropertyInfoExtensions.cs b/dotnet/src/Microsoft.Agents.AI.Declarative/Extensions/PropertyInfoExtensions.cs
new file mode 100644
index 0000000000..a62fddec88
--- /dev/null
+++ b/dotnet/src/Microsoft.Agents.AI.Declarative/Extensions/PropertyInfoExtensions.cs
@@ -0,0 +1,96 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using System.Collections.Generic;
+using System.Text.Json;
+
+namespace Microsoft.Bot.ObjectModel;
+
+///
+/// Extension methods for .
+///
+public static class PropertyInfoExtensions
+{
+ ///
+ /// Creates a of and
+ /// from an of and .
+ ///
+ /// A read-only dictionary of property names and their corresponding objects.
+ public static Dictionary AsObjectDictionary(this IReadOnlyDictionary properties)
+ {
+ var result = new Dictionary();
+
+ foreach (var property in properties)
+ {
+ result[property.Key] = BuildPropertySchema(property.Value);
+ }
+
+ return result;
+ }
+
+ #region private
+ private static Dictionary BuildPropertySchema(PropertyInfo propertyInfo)
+ {
+ var propertySchema = new Dictionary();
+
+ // Map the DataType to JSON schema type and add type-specific properties
+ switch (propertyInfo.Type)
+ {
+ case StringDataType:
+ propertySchema["type"] = "string";
+ break;
+ case NumberDataType:
+ propertySchema["type"] = "number";
+ break;
+ case BooleanDataType:
+ propertySchema["type"] = "boolean";
+ break;
+ case DateTimeDataType:
+ propertySchema["type"] = "string";
+ propertySchema["format"] = "date-time";
+ break;
+ case DateDataType:
+ propertySchema["type"] = "string";
+ propertySchema["format"] = "date";
+ break;
+ case TimeDataType:
+ propertySchema["type"] = "string";
+ propertySchema["format"] = "time";
+ break;
+ case RecordDataType nestedRecordType:
+#pragma warning disable IL2026, IL3050
+ // For nested records, recursively build the schema
+ var nestedSchema = nestedRecordType.GetSchema();
+ var nestedJson = JsonSerializer.Serialize(nestedSchema, ElementSerializer.CreateOptions());
+ var nestedDict = JsonSerializer.Deserialize>(nestedJson, ElementSerializer.CreateOptions());
+#pragma warning restore IL2026, IL3050
+ if (nestedDict != null)
+ {
+ return nestedDict;
+ }
+ propertySchema["type"] = "object";
+ break;
+ case TableDataType tableType:
+ propertySchema["type"] = "array";
+ // TableDataType has Properties like RecordDataType
+ propertySchema["items"] = new Dictionary
+ {
+ ["type"] = "object",
+ ["properties"] = AsObjectDictionary(tableType.Properties),
+ ["additionalProperties"] = false
+ };
+ break;
+ default:
+ propertySchema["type"] = "string";
+ break;
+ }
+
+ // Add description if available
+ if (!string.IsNullOrEmpty(propertyInfo.Description))
+ {
+ propertySchema["description"] = propertyInfo.Description;
+ }
+
+ return propertySchema;
+ }
+ #endregion
+}
diff --git a/dotnet/src/Microsoft.Agents.AI.Declarative/Extensions/RecordDataTypeExtensions.cs b/dotnet/src/Microsoft.Agents.AI.Declarative/Extensions/RecordDataTypeExtensions.cs
new file mode 100644
index 0000000000..b5c5793cab
--- /dev/null
+++ b/dotnet/src/Microsoft.Agents.AI.Declarative/Extensions/RecordDataTypeExtensions.cs
@@ -0,0 +1,77 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using System.Collections.Generic;
+using System.Text.Json;
+using Microsoft.Extensions.AI;
+using Microsoft.Shared.Diagnostics;
+
+namespace Microsoft.Bot.ObjectModel;
+
+///
+/// Extension methods for .
+///
+public static class RecordDataTypeExtensions
+{
+ ///
+ /// Creates a from a .
+ ///
+ /// Instance of
+ internal static ChatResponseFormat? AsChatResponseFormat(this RecordDataType recordDataType)
+ {
+ Throw.IfNull(recordDataType);
+
+ if (recordDataType.Properties.Count == 0)
+ {
+ return null;
+ }
+
+ // TODO: Consider adding schemaName and schemaDescription parameters to this method.
+ return ChatResponseFormat.ForJsonSchema(
+ schema: recordDataType.GetSchema(),
+ schemaName: recordDataType.GetSchemaName(),
+ schemaDescription: recordDataType.GetSchemaDescription());
+ }
+
+ ///
+ /// Converts a to a .
+ ///
+ /// Instance of
+#pragma warning disable IL2026 // Members annotated with 'RequiresUnreferencedCodeAttribute' require dynamic access otherwise can break functionality when trimming application code
+#pragma warning disable IL3050 // Calling members annotated with 'RequiresDynamicCodeAttribute' may break functionality when AOT compiling.
+ public static JsonElement GetSchema(this RecordDataType recordDataType)
+ {
+ Throw.IfNull(recordDataType);
+
+ var schemaObject = new Dictionary
+ {
+ ["type"] = "object",
+ ["properties"] = recordDataType.Properties.AsObjectDictionary(),
+ ["additionalProperties"] = false
+ };
+
+ var json = JsonSerializer.Serialize(schemaObject, ElementSerializer.CreateOptions());
+ return JsonSerializer.Deserialize(json);
+ }
+#pragma warning restore IL3050 // Calling members annotated with 'RequiresDynamicCodeAttribute' may break functionality when AOT compiling.
+#pragma warning restore IL2026 // Members annotated with 'RequiresUnreferencedCodeAttribute' require dynamic access otherwise can break functionality when trimming application code
+
+ ///
+ /// Retrieves the 'schemaName' property from a .
+ ///
+ private static string? GetSchemaName(this RecordDataType recordDataType)
+ {
+ Throw.IfNull(recordDataType);
+
+ return recordDataType.ExtensionData?.GetPropertyOrNull(InitializablePropertyPath.Create("schemaName"))?.Value;
+ }
+
+ ///
+ /// Retrieves the 'schemaDescription' property from a .
+ ///
+ private static string? GetSchemaDescription(this RecordDataType recordDataType)
+ {
+ Throw.IfNull(recordDataType);
+
+ return recordDataType.ExtensionData?.GetPropertyOrNull(InitializablePropertyPath.Create("schemaDescription"))?.Value;
+ }
+}
diff --git a/dotnet/src/Microsoft.Agents.AI.Declarative/Extensions/RecordDataValueExtensions.cs b/dotnet/src/Microsoft.Agents.AI.Declarative/Extensions/RecordDataValueExtensions.cs
new file mode 100644
index 0000000000..6351b7badb
--- /dev/null
+++ b/dotnet/src/Microsoft.Agents.AI.Declarative/Extensions/RecordDataValueExtensions.cs
@@ -0,0 +1,107 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text.Json;
+using Microsoft.Shared.Diagnostics;
+
+namespace Microsoft.Bot.ObjectModel;
+
+///
+/// Extension methods for .
+///
+public static class RecordDataValueExtensions
+{
+ ///
+ /// Retrieves a 'number' property from a
+ ///
+ /// Instance of
+ /// Path of the property to retrieve
+ public static decimal? GetNumber(this RecordDataValue recordData, string propertyPath)
+ {
+ Throw.IfNull(recordData);
+
+ var numberValue = recordData.GetPropertyOrNull(InitializablePropertyPath.Create(propertyPath));
+ return numberValue?.Value;
+ }
+
+ ///
+ /// Retrieves a nullable boolean value from the specified property path within the given record data.
+ ///
+ /// Instance of
+ /// Path of the property to retrieve
+ public static bool? GetBoolean(this RecordDataValue recordData, string propertyPath)
+ {
+ Throw.IfNull(recordData);
+
+ var booleanValue = recordData.GetPropertyOrNull(InitializablePropertyPath.Create(propertyPath));
+ return booleanValue?.Value;
+ }
+
+ ///
+ /// Converts a to a .
+ ///
+ /// Instance of
+ public static IReadOnlyDictionary ToDictionary(this RecordDataValue recordData)
+ {
+ Throw.IfNull(recordData);
+
+ return recordData.Properties.ToDictionary(
+ kvp => kvp.Key,
+ kvp => kvp.Value?.ToString() ?? string.Empty
+ );
+ }
+
+ ///
+ /// Retrieves the 'schema' property from a .
+ ///
+ /// Instance of
+#pragma warning disable IL2026 // Members annotated with 'RequiresUnreferencedCodeAttribute' require dynamic access otherwise can break functionality when trimming application code
+#pragma warning disable IL3050 // Calling members annotated with 'RequiresDynamicCodeAttribute' may break functionality when AOT compiling.
+ public static JsonElement? GetSchema(this RecordDataValue recordData)
+ {
+ Throw.IfNull(recordData);
+
+ try
+ {
+ var schemaStr = recordData.GetPropertyOrNull(InitializablePropertyPath.Create("json_schema.schema"));
+ if (schemaStr?.Value is not null)
+ {
+ return JsonSerializer.Deserialize(schemaStr.Value);
+ }
+ }
+ catch (InvalidCastException)
+ {
+ // Ignore and try next
+ }
+
+ var responseFormRec = recordData.GetPropertyOrNull(InitializablePropertyPath.Create("json_schema.schema"));
+ if (responseFormRec is not null)
+ {
+ var json = JsonSerializer.Serialize(responseFormRec, ElementSerializer.CreateOptions());
+ return JsonSerializer.Deserialize(json);
+ }
+
+ return null;
+ }
+#pragma warning restore IL3050 // Calling members annotated with 'RequiresDynamicCodeAttribute' may break functionality when AOT compiling.
+#pragma warning restore IL2026 // Members annotated with 'RequiresUnreferencedCodeAttribute' require dynamic access otherwise can break functionality when trimming application code
+
+ internal static object? ToObject(this DataValue? value)
+ {
+ if (value is null)
+ {
+ return null;
+ }
+ return value switch
+ {
+ StringDataValue s => s.Value,
+ NumberDataValue n => n.Value,
+ BooleanDataValue b => b.Value,
+ TableDataValue t => t.Values.Select(v => v.ToObject()).ToList(),
+ RecordDataValue r => r.Properties.ToDictionary(kvp => kvp.Key, kvp => kvp.Value?.ToObject()),
+ _ => throw new NotSupportedException($"Unsupported DataValue type: {value.GetType().FullName}"),
+ };
+ }
+}
diff --git a/dotnet/src/Microsoft.Agents.AI.Declarative/Extensions/StringExpressionExtensions.cs b/dotnet/src/Microsoft.Agents.AI.Declarative/Extensions/StringExpressionExtensions.cs
new file mode 100644
index 0000000000..40c1b7c9c8
--- /dev/null
+++ b/dotnet/src/Microsoft.Agents.AI.Declarative/Extensions/StringExpressionExtensions.cs
@@ -0,0 +1,48 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using Microsoft.PowerFx;
+using Microsoft.PowerFx.Types;
+
+namespace Microsoft.Bot.ObjectModel;
+
+///
+/// Extension methods for .
+///
+public static class StringExpressionExtensions
+{
+ ///
+ /// Evaluates the given using the provided .
+ ///
+ /// Expression to evaluate.
+ /// Recalc engine to use for evaluation.
+ /// The evaluated string value, or null if the expression is null or cannot be evaluated.
+ public static string? Eval(this StringExpression? expression, RecalcEngine? engine)
+ {
+ if (expression is null)
+ {
+ return null;
+ }
+
+ if (expression.IsLiteral)
+ {
+ return expression.LiteralValue?.ToString();
+ }
+
+ if (engine is null)
+ {
+ return null;
+ }
+
+ if (expression.IsExpression)
+ {
+ return engine.Eval(expression.ExpressionText!).ToString();
+ }
+ else if (expression.IsVariableReference)
+ {
+ var stringValue = engine.Eval(expression.VariableReference!.VariableName) as StringValue;
+ return stringValue?.Value;
+ }
+
+ return null;
+ }
+}
diff --git a/dotnet/src/Microsoft.Agents.AI.Declarative/Extensions/WebSearchToolExtensions.cs b/dotnet/src/Microsoft.Agents.AI.Declarative/Extensions/WebSearchToolExtensions.cs
new file mode 100644
index 0000000000..e6ee360308
--- /dev/null
+++ b/dotnet/src/Microsoft.Agents.AI.Declarative/Extensions/WebSearchToolExtensions.cs
@@ -0,0 +1,23 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using Microsoft.Extensions.AI;
+using Microsoft.Shared.Diagnostics;
+
+namespace Microsoft.Bot.ObjectModel;
+
+///
+/// Extension methods for .
+///
+internal static class WebSearchToolExtensions
+{
+ ///
+ /// Create a from a .
+ ///
+ /// Instance of
+ internal static HostedWebSearchTool CreateWebSearchTool(this WebSearchTool tool)
+ {
+ Throw.IfNull(tool);
+
+ return new HostedWebSearchTool();
+ }
+}
diff --git a/dotnet/src/Microsoft.Agents.AI.Declarative/Extensions/YamlAgentFactoryExtensions.cs b/dotnet/src/Microsoft.Agents.AI.Declarative/Extensions/YamlAgentFactoryExtensions.cs
new file mode 100644
index 0000000000..1cc24055d9
--- /dev/null
+++ b/dotnet/src/Microsoft.Agents.AI.Declarative/Extensions/YamlAgentFactoryExtensions.cs
@@ -0,0 +1,33 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using System.Diagnostics.CodeAnalysis;
+using System.Threading;
+using System.Threading.Tasks;
+using Microsoft.Shared.Diagnostics;
+
+namespace Microsoft.Agents.AI;
+
+///
+/// Extension methods for to support YAML based agent definitions.
+///
+public static class YamlAgentFactoryExtensions
+{
+ ///
+ /// Create a from the given agent YAML.
+ ///
+ /// which will be used to create the agent.
+ /// Text string containing the YAML representation of an .
+ /// Optional cancellation token
+ [RequiresDynamicCode("Calls YamlDotNet.Serialization.DeserializerBuilder.DeserializerBuilder()")]
+ public static Task CreateFromYamlAsync(this PromptAgentFactory agentFactory, string agentYaml, CancellationToken cancellationToken = default)
+ {
+ Throw.IfNull(agentFactory);
+ Throw.IfNullOrEmpty(agentYaml);
+
+ var agentDefinition = AgentBotElementYaml.FromYaml(agentYaml);
+
+ return agentFactory.CreateAsync(
+ agentDefinition,
+ cancellationToken);
+ }
+}
diff --git a/dotnet/src/Microsoft.Agents.AI.Declarative/Microsoft.Agents.AI.Declarative.csproj b/dotnet/src/Microsoft.Agents.AI.Declarative/Microsoft.Agents.AI.Declarative.csproj
new file mode 100644
index 0000000000..306ba27e97
--- /dev/null
+++ b/dotnet/src/Microsoft.Agents.AI.Declarative/Microsoft.Agents.AI.Declarative.csproj
@@ -0,0 +1,45 @@
+
+
+
+ preview
+ $(NoWarn);MEAI001
+ false
+
+
+
+ true
+ true
+ true
+
+
+
+
+
+
+ Microsoft Agent Framework Declarative Agents
+ Provides Microsoft Agent Framework support for declarative agents.
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/dotnet/src/Microsoft.Agents.AI.Declarative/PromptAgentFactory.cs b/dotnet/src/Microsoft.Agents.AI.Declarative/PromptAgentFactory.cs
new file mode 100644
index 0000000000..cb277b06da
--- /dev/null
+++ b/dotnet/src/Microsoft.Agents.AI.Declarative/PromptAgentFactory.cs
@@ -0,0 +1,63 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using System;
+using System.Threading;
+using System.Threading.Tasks;
+using Microsoft.Bot.ObjectModel;
+using Microsoft.Extensions.Configuration;
+using Microsoft.PowerFx;
+using Microsoft.Shared.Diagnostics;
+
+namespace Microsoft.Agents.AI;
+
+///
+/// Represents a factory for creating instances.
+///
+public abstract class PromptAgentFactory
+{
+ ///
+ /// Initializes a new instance of the class.
+ ///
+ /// Optional , if none is provided a default instance will be created.
+ /// Optional configuration to be added as variables to the .
+ protected PromptAgentFactory(RecalcEngine? engine = null, IConfiguration? configuration = null)
+ {
+ this.Engine = engine ?? new RecalcEngine();
+
+ if (configuration is not null)
+ {
+ foreach (var kvp in configuration.AsEnumerable())
+ {
+ this.Engine.UpdateVariable(kvp.Key, kvp.Value ?? string.Empty);
+ }
+ }
+ }
+
+ ///
+ /// Gets the Power Fx recalculation engine used to evaluate expressions in agent definitions.
+ /// This engine is configured with variables from the provided during construction.
+ ///
+ protected RecalcEngine Engine { get; }
+
+ ///
+ /// Create a from the specified .
+ ///
+ /// Definition of the agent to create.
+ /// Optional cancellation token.
+ /// The created , if null the agent type is not supported.
+ public async Task CreateAsync(GptComponentMetadata promptAgent, CancellationToken cancellationToken = default)
+ {
+ Throw.IfNull(promptAgent);
+
+ var agent = await this.TryCreateAsync(promptAgent, cancellationToken).ConfigureAwait(false);
+ return agent ?? throw new NotSupportedException($"Agent type {promptAgent.Kind} is not supported.");
+ }
+
+ ///
+ /// Tries to create a from the specified .
+ ///
+ /// Definition of the agent to create.
+ /// Optional cancellation token.
+ /// The created , if null the agent type is not supported.
+ public abstract Task TryCreateAsync(GptComponentMetadata promptAgent, CancellationToken cancellationToken = default);
+}
diff --git a/dotnet/src/Microsoft.Agents.AI/Microsoft.Agents.AI.csproj b/dotnet/src/Microsoft.Agents.AI/Microsoft.Agents.AI.csproj
index 5a9cb416c8..ad5b2e0fdd 100644
--- a/dotnet/src/Microsoft.Agents.AI/Microsoft.Agents.AI.csproj
+++ b/dotnet/src/Microsoft.Agents.AI/Microsoft.Agents.AI.csproj
@@ -32,6 +32,7 @@
+
diff --git a/dotnet/tests/Microsoft.Agents.AI.Declarative.UnitTests/AgentBotElementYamlTests.cs b/dotnet/tests/Microsoft.Agents.AI.Declarative.UnitTests/AgentBotElementYamlTests.cs
new file mode 100644
index 0000000000..31cadfb0ce
--- /dev/null
+++ b/dotnet/tests/Microsoft.Agents.AI.Declarative.UnitTests/AgentBotElementYamlTests.cs
@@ -0,0 +1,310 @@
+// Copyright (c) Microsoft. All rights reserved.
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.IO;
+using System.Linq;
+using System.Text.Json.Serialization;
+using Microsoft.Bot.ObjectModel;
+using Microsoft.Extensions.AI;
+using Microsoft.Extensions.Configuration;
+using Microsoft.PowerFx;
+
+namespace Microsoft.Agents.AI.Declarative.UnitTests;
+
+///
+/// Unit tests for
+///
+public sealed class AgentBotElementYamlTests
+{
+ [Theory]
+ [InlineData(PromptAgents.AgentWithEverything)]
+ [InlineData(PromptAgents.AgentWithApiKeyConnection)]
+ [InlineData(PromptAgents.AgentWithVariableReferences)]
+ [InlineData(PromptAgents.AgentWithOutputSchema)]
+ [InlineData(PromptAgents.OpenAIChatAgent)]
+ [InlineData(PromptAgents.AgentWithCurrentModels)]
+ [InlineData(PromptAgents.AgentWithRemoteConnection)]
+ public void FromYaml_DoesNotThrow(string text)
+ {
+ // Arrange & Act
+ var agent = AgentBotElementYaml.FromYaml(text);
+
+ // Assert
+ Assert.NotNull(agent);
+ }
+
+ [Fact]
+ public void FromYaml_NotPromptAgent_Throws()
+ {
+ // Arrange & Act & Assert
+ Assert.Throws(() => AgentBotElementYaml.FromYaml(PromptAgents.Workflow));
+ }
+
+ [Fact]
+ public void FromYaml_Properties()
+ {
+ // Arrange & Act
+ var agent = AgentBotElementYaml.FromYaml(PromptAgents.AgentWithEverything);
+
+ // Assert
+ Assert.NotNull(agent);
+ Assert.Equal("AgentName", agent.Name);
+ Assert.Equal("Agent description", agent.Description);
+ Assert.Equal("You are a helpful assistant.", agent.Instructions?.ToTemplateString());
+ Assert.NotNull(agent.Model);
+ Assert.True(agent.Tools.Length > 0);
+ }
+
+ [Fact]
+ public void FromYaml_CurrentModels()
+ {
+ // Arrange & Act
+ var agent = AgentBotElementYaml.FromYaml(PromptAgents.AgentWithCurrentModels);
+
+ // Assert
+ Assert.NotNull(agent);
+ Assert.NotNull(agent.Model);
+ Assert.Equal("gpt-4o", agent.Model.ModelNameHint);
+ Assert.NotNull(agent.Model.Options);
+ Assert.Equal(0.7f, (float?)agent.Model.Options?.Temperature?.LiteralValue);
+ Assert.Equal(0.9f, (float?)agent.Model.Options?.TopP?.LiteralValue);
+
+ // Assert contents using extension methods
+ Assert.Equal(1024, agent.Model.Options?.MaxOutputTokens?.LiteralValue);
+ Assert.Equal(50, agent.Model.Options?.TopK?.LiteralValue);
+ Assert.Equal(0.7f, (float?)agent.Model.Options?.FrequencyPenalty?.LiteralValue);
+ Assert.Equal(0.7f, (float?)agent.Model.Options?.PresencePenalty?.LiteralValue);
+ Assert.Equal(42, agent.Model.Options?.Seed?.LiteralValue);
+ Assert.Equal(PromptAgents.s_stopSequences, agent.Model.Options?.StopSequences);
+ Assert.True(agent.Model.Options?.AllowMultipleToolCalls?.LiteralValue);
+ Assert.Equal(ChatToolMode.Auto, agent.Model.Options?.AsChatToolMode());
+ }
+
+ [Fact]
+ public void FromYaml_OutputSchema()
+ {
+ // Arrange & Act
+ var agent = AgentBotElementYaml.FromYaml(PromptAgents.AgentWithOutputSchema);
+
+ // Assert
+ Assert.NotNull(agent);
+ Assert.NotNull(agent.OutputType);
+ ChatResponseFormatJson responseFormat = (agent.OutputType.AsChatResponseFormat() as ChatResponseFormatJson)!;
+ Assert.NotNull(responseFormat);
+ Assert.NotNull(responseFormat.Schema);
+ }
+
+ [Fact]
+ public void FromYaml_CodeInterpreter()
+ {
+ // Arrange & Act
+ var agent = AgentBotElementYaml.FromYaml(PromptAgents.AgentWithEverything);
+
+ // Assert
+ Assert.NotNull(agent);
+ var tools = agent.Tools;
+ var codeInterpreterTools = tools.Where(t => t is CodeInterpreterTool).ToArray();
+ Assert.Single(codeInterpreterTools);
+ CodeInterpreterTool codeInterpreterTool = (codeInterpreterTools[0] as CodeInterpreterTool)!;
+ Assert.NotNull(codeInterpreterTool);
+ }
+
+ [Fact]
+ public void FromYaml_FunctionTool()
+ {
+ // Arrange & Act
+ var agent = AgentBotElementYaml.FromYaml(PromptAgents.AgentWithEverything);
+
+ // Assert
+ Assert.NotNull(agent);
+ var tools = agent.Tools;
+ var functionTools = tools.Where(t => t is InvokeClientTaskAction).ToArray();
+ Assert.Single(functionTools);
+ InvokeClientTaskAction functionTool = (functionTools[0] as InvokeClientTaskAction)!;
+ Assert.NotNull(functionTool);
+ Assert.Equal("GetWeather", functionTool.Name);
+ Assert.Equal("Get the weather for a given location.", functionTool.Description);
+ // TODO check schema
+ }
+
+ [Fact]
+ public void FromYaml_MCP()
+ {
+ // Arrange & Act
+ var agent = AgentBotElementYaml.FromYaml(PromptAgents.AgentWithEverything);
+
+ // Assert
+ Assert.NotNull(agent);
+ var tools = agent.Tools;
+ var mcpTools = tools.Where(t => t is McpServerTool).ToArray();
+ Assert.Single(mcpTools);
+ McpServerTool mcpTool = (mcpTools[0] as McpServerTool)!;
+ Assert.NotNull(mcpTool);
+ Assert.Equal("PersonInfoTool", mcpTool.ServerName?.LiteralValue);
+ AnonymousConnection connection = (mcpTool.Connection as AnonymousConnection)!;
+ Assert.NotNull(connection);
+ Assert.Equal("https://my-mcp-endpoint.com/api", connection.Endpoint?.LiteralValue);
+ }
+
+ [Fact]
+ public void FromYaml_WebSearchTool()
+ {
+ // Arrange & Act
+ var agent = AgentBotElementYaml.FromYaml(PromptAgents.AgentWithEverything);
+
+ // Assert
+ Assert.NotNull(agent);
+ var tools = agent.Tools;
+ var webSearchTools = tools.Where(t => t is WebSearchTool).ToArray();
+ Assert.Single(webSearchTools);
+ Assert.NotNull(webSearchTools[0] as WebSearchTool);
+ }
+
+ [Fact]
+ public void FromYaml_FileSearchTool()
+ {
+ // Arrange & Act
+ var agent = AgentBotElementYaml.FromYaml(PromptAgents.AgentWithEverything);
+
+ // Assert
+ Assert.NotNull(agent);
+ var tools = agent.Tools;
+ var fileSearchTools = tools.Where(t => t is FileSearchTool).ToArray();
+ Assert.Single(fileSearchTools);
+ FileSearchTool fileSearchTool = (fileSearchTools[0] as FileSearchTool)!;
+ Assert.NotNull(fileSearchTool);
+
+ // Verify vector store content property exists and has correct values
+ Assert.NotNull(fileSearchTool.VectorStoreIds);
+ Assert.Equal(3, fileSearchTool.VectorStoreIds.LiteralValue.Length);
+ Assert.Equal("1", fileSearchTool.VectorStoreIds.LiteralValue[0]);
+ Assert.Equal("2", fileSearchTool.VectorStoreIds.LiteralValue[1]);
+ Assert.Equal("3", fileSearchTool.VectorStoreIds.LiteralValue[2]);
+ }
+
+ [Fact]
+ public void FromYaml_ApiKeyConnection()
+ {
+ // Arrange & Act
+ var agent = AgentBotElementYaml.FromYaml(PromptAgents.AgentWithApiKeyConnection);
+
+ // Assert
+ Assert.NotNull(agent);
+ Assert.NotNull(agent.Model);
+ CurrentModels model = (agent.Model as CurrentModels)!;
+ Assert.NotNull(model);
+ Assert.NotNull(model.Connection);
+ Assert.IsType(model.Connection);
+ ApiKeyConnection connection = (model.Connection as ApiKeyConnection)!;
+ Assert.NotNull(connection);
+ Assert.Equal("https://my-azure-openai-endpoint.openai.azure.com/", connection.Endpoint?.LiteralValue);
+ Assert.Equal("my-api-key", connection.Key?.LiteralValue);
+ }
+
+ [Fact]
+ public void FromYaml_RemoteConnection()
+ {
+ // Arrange & Act
+ var agent = AgentBotElementYaml.FromYaml(PromptAgents.AgentWithRemoteConnection);
+
+ // Assert
+ Assert.NotNull(agent);
+ Assert.NotNull(agent.Model);
+ CurrentModels model = (agent.Model as CurrentModels)!;
+ Assert.NotNull(model);
+ Assert.NotNull(model.Connection);
+ Assert.IsType(model.Connection);
+ RemoteConnection connection = (model.Connection as RemoteConnection)!;
+ Assert.NotNull(connection);
+ Assert.Equal("https://my-azure-openai-endpoint.openai.azure.com/", connection.Endpoint?.LiteralValue);
+ }
+
+ [Fact]
+ public void FromYaml_WithVariableReferences()
+ {
+ // Arrange
+ IConfiguration configuration = new ConfigurationBuilder()
+ .AddInMemoryCollection(new Dictionary
+ {
+ ["OpenAIEndpoint"] = "endpoint",
+ ["OpenAIApiKey"] = "apiKey",
+ ["Temperature"] = "0.9",
+ ["TopP"] = "0.8"
+ })
+ .Build();
+
+ // Act
+ var agent = AgentBotElementYaml.FromYaml(PromptAgents.AgentWithVariableReferences, configuration);
+
+ // Assert
+ Assert.NotNull(agent);
+ Assert.NotNull(agent.Model);
+ CurrentModels model = (agent.Model as CurrentModels)!;
+ Assert.NotNull(model);
+ Assert.NotNull(model.Options);
+ Assert.Equal(0.9, Eval(model.Options?.Temperature, configuration));
+ Assert.Equal(0.8, Eval(model.Options?.TopP, configuration));
+ Assert.NotNull(model.Connection);
+ Assert.IsType(model.Connection);
+ ApiKeyConnection connection = (model.Connection as ApiKeyConnection)!;
+ Assert.NotNull(connection);
+ Assert.NotNull(connection.Endpoint);
+ Assert.NotNull(connection.Key);
+ Assert.Equal("endpoint", Eval(connection.Endpoint, configuration));
+ Assert.Equal("apiKey", Eval(connection.Key, configuration));
+ }
+
+ ///
+ /// Represents information about a person, including their name, age, and occupation, matched to the JSON schema used in the agent.
+ ///
+ [Description("Information about a person including their name, age, and occupation")]
+ public sealed class PersonInfo
+ {
+ [JsonPropertyName("name")]
+ public string? Name { get; set; }
+
+ [JsonPropertyName("age")]
+ public int? Age { get; set; }
+
+ [JsonPropertyName("occupation")]
+ public string? Occupation { get; set; }
+ }
+
+ private static string? Eval(StringExpression? expression, IConfiguration? configuration = null)
+ {
+ if (expression is null)
+ {
+ return null;
+ }
+
+ RecalcEngine engine = new();
+ if (configuration is not null)
+ {
+ foreach (var kvp in configuration.AsEnumerable())
+ {
+ engine.UpdateVariable(kvp.Key, kvp.Value ?? string.Empty);
+ }
+ }
+
+ return expression.Eval(engine);
+ }
+
+ private static double? Eval(NumberExpression? expression, IConfiguration? configuration = null)
+ {
+ if (expression is null)
+ {
+ return null;
+ }
+
+ RecalcEngine engine = new();
+ if (configuration != null)
+ {
+ foreach (var kvp in configuration.AsEnumerable())
+ {
+ engine.UpdateVariable(kvp.Key, kvp.Value ?? string.Empty);
+ }
+ }
+
+ return expression.Eval(engine);
+ }
+}
diff --git a/dotnet/tests/Microsoft.Agents.AI.Declarative.UnitTests/AggregatorPromptAgentFactoryTests.cs b/dotnet/tests/Microsoft.Agents.AI.Declarative.UnitTests/AggregatorPromptAgentFactoryTests.cs
new file mode 100644
index 0000000000..d20bd9be00
--- /dev/null
+++ b/dotnet/tests/Microsoft.Agents.AI.Declarative.UnitTests/AggregatorPromptAgentFactoryTests.cs
@@ -0,0 +1,89 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using System;
+using System.Collections.Generic;
+using System.Text.Json;
+using System.Threading;
+using System.Threading.Tasks;
+using Microsoft.Bot.ObjectModel;
+using Microsoft.Extensions.AI;
+
+namespace Microsoft.Agents.AI.Declarative.UnitTests;
+
+///
+/// Unit tests for
+///
+public sealed class AggregatorPromptAgentFactoryTests
+{
+ [Fact]
+ public void AggregatorAgentFactory_ThrowsForEmptyArray()
+ {
+ // Arrange & Act & Assert
+ Assert.Throws(() => new AggregatorPromptAgentFactory([]));
+ }
+
+ [Fact]
+ public async Task AggregatorAgentFactory_ReturnsNull()
+ {
+ // Arrange
+ var factory = new AggregatorPromptAgentFactory([new TestAgentFactory(null)]);
+
+ // Act
+ var agent = await factory.TryCreateAsync(new GptComponentMetadata("test"));
+
+ // Assert
+ Assert.Null(agent);
+ }
+
+ [Fact]
+ public async Task AggregatorAgentFactory_ReturnsAgent()
+ {
+ // Arrange
+ var agentToReturn = new TestAgent();
+ var factory = new AggregatorPromptAgentFactory([new TestAgentFactory(null), new TestAgentFactory(agentToReturn)]);
+
+ // Act
+ var agent = await factory.TryCreateAsync(new GptComponentMetadata("test"));
+
+ // Assert
+ Assert.Equal(agentToReturn, agent);
+ }
+
+ private sealed class TestAgentFactory : PromptAgentFactory
+ {
+ private readonly AIAgent? _agentToReturn;
+
+ public TestAgentFactory(AIAgent? agentToReturn = null)
+ {
+ this._agentToReturn = agentToReturn;
+ }
+
+ public override Task TryCreateAsync(GptComponentMetadata promptAgent, CancellationToken cancellationToken = default)
+ {
+ return Task.FromResult(this._agentToReturn);
+ }
+ }
+
+ private sealed class TestAgent : AIAgent
+ {
+ public override AgentThread DeserializeThread(JsonElement serializedThread, JsonSerializerOptions? jsonSerializerOptions = null)
+ {
+ throw new NotImplementedException();
+ }
+
+ public override AgentThread GetNewThread()
+ {
+ throw new NotImplementedException();
+ }
+
+ public override Task RunAsync(IEnumerable messages, AgentThread? thread = null, AgentRunOptions? options = null, CancellationToken cancellationToken = default)
+ {
+ throw new NotImplementedException();
+ }
+
+ public override IAsyncEnumerable RunStreamingAsync(IEnumerable messages, AgentThread? thread = null, AgentRunOptions? options = null, CancellationToken cancellationToken = default)
+ {
+ throw new NotImplementedException();
+ }
+ }
+}
diff --git a/dotnet/tests/Microsoft.Agents.AI.Declarative.UnitTests/ChatClient/ChatClientAgentFactoryTests.cs b/dotnet/tests/Microsoft.Agents.AI.Declarative.UnitTests/ChatClient/ChatClientAgentFactoryTests.cs
new file mode 100644
index 0000000000..e790bd27f0
--- /dev/null
+++ b/dotnet/tests/Microsoft.Agents.AI.Declarative.UnitTests/ChatClient/ChatClientAgentFactoryTests.cs
@@ -0,0 +1,107 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using System.Threading.Tasks;
+using Microsoft.Extensions.AI;
+using Moq;
+
+namespace Microsoft.Agents.AI.Declarative.UnitTests.ChatClient;
+
+///
+/// Unit tests for .
+///
+public sealed class ChatClientAgentFactoryTests
+{
+ private readonly Mock _mockChatClient;
+
+ public ChatClientAgentFactoryTests()
+ {
+ this._mockChatClient = new();
+ }
+
+ [Fact]
+ public async Task TryCreateAsync_WithChatClientInConstructor_CreatesAgentAsync()
+ {
+ // Arrange
+ var promptAgent = PromptAgents.CreateTestPromptAgent();
+ ChatClientPromptAgentFactory factory = new(this._mockChatClient.Object);
+
+ // Act
+ AIAgent? agent = await factory.TryCreateAsync(promptAgent);
+
+ // Assert
+ Assert.NotNull(agent);
+ Assert.IsType(agent);
+ Assert.Equal("Test Agent", agent.Name);
+ Assert.Equal("Test Description", agent.Description);
+ }
+
+ [Fact]
+ public async Task TryCreateAsync_Creates_ChatClientAgentAsync()
+ {
+ // Arrange
+ var promptAgent = PromptAgents.CreateTestPromptAgent();
+ ChatClientPromptAgentFactory factory = new(this._mockChatClient.Object);
+
+ // Act
+ AIAgent? agent = await factory.TryCreateAsync(promptAgent);
+
+ // Assert
+ Assert.NotNull(agent);
+ Assert.IsType(agent);
+ var chatClientAgent = agent as ChatClientAgent;
+ Assert.NotNull(chatClientAgent);
+ Assert.Equal("You are a helpful assistant.", chatClientAgent.Instructions);
+ Assert.NotNull(chatClientAgent.ChatClient);
+ Assert.NotNull(chatClientAgent.ChatOptions);
+ }
+
+ [Fact]
+ public async Task TryCreateAsync_Creates_ChatOptionsAsync()
+ {
+ // Arrange
+ var promptAgent = PromptAgents.CreateTestPromptAgent();
+ ChatClientPromptAgentFactory factory = new(this._mockChatClient.Object);
+
+ // Act
+ AIAgent? agent = await factory.TryCreateAsync(promptAgent);
+
+ // Assert
+ Assert.NotNull(agent);
+ Assert.IsType(agent);
+ var chatClientAgent = agent as ChatClientAgent;
+ Assert.NotNull(chatClientAgent?.ChatOptions);
+ Assert.Equal("Provide detailed and accurate responses.", chatClientAgent?.ChatOptions?.Instructions);
+ Assert.Equal(0.7F, chatClientAgent?.ChatOptions?.Temperature);
+ Assert.Equal(0.7F, chatClientAgent?.ChatOptions?.FrequencyPenalty);
+ Assert.Equal(1024, chatClientAgent?.ChatOptions?.MaxOutputTokens);
+ Assert.Equal(0.9F, chatClientAgent?.ChatOptions?.TopP);
+ Assert.Equal(50, chatClientAgent?.ChatOptions?.TopK);
+ Assert.Equal(0.7F, chatClientAgent?.ChatOptions?.PresencePenalty);
+ Assert.Equal(42L, chatClientAgent?.ChatOptions?.Seed);
+ Assert.NotNull(chatClientAgent?.ChatOptions?.ResponseFormat);
+ Assert.Equal("gpt-4o", chatClientAgent?.ChatOptions?.ModelId);
+ Assert.Equal(["###", "END", "STOP"], chatClientAgent?.ChatOptions?.StopSequences);
+ Assert.True(chatClientAgent?.ChatOptions?.AllowMultipleToolCalls);
+ Assert.Equal(ChatToolMode.Auto, chatClientAgent?.ChatOptions?.ToolMode);
+ Assert.Equal("customValue", chatClientAgent?.ChatOptions?.AdditionalProperties?["customProperty"]);
+ }
+
+ [Fact]
+ public async Task TryCreateAsync_Creates_ToolsAsync()
+ {
+ // Arrange
+ var promptAgent = PromptAgents.CreateTestPromptAgent();
+ ChatClientPromptAgentFactory factory = new(this._mockChatClient.Object);
+
+ // Act
+ AIAgent? agent = await factory.TryCreateAsync(promptAgent);
+
+ // Assert
+ Assert.NotNull(agent);
+ Assert.IsType(agent);
+ var chatClientAgent = agent as ChatClientAgent;
+ Assert.NotNull(chatClientAgent?.ChatOptions?.Tools);
+ var tools = chatClientAgent?.ChatOptions?.Tools;
+ Assert.Equal(5, tools?.Count);
+ }
+}
diff --git a/dotnet/tests/Microsoft.Agents.AI.Declarative.UnitTests/Microsoft.Agents.AI.Declarative.UnitTests.csproj b/dotnet/tests/Microsoft.Agents.AI.Declarative.UnitTests/Microsoft.Agents.AI.Declarative.UnitTests.csproj
new file mode 100644
index 0000000000..d348a0b433
--- /dev/null
+++ b/dotnet/tests/Microsoft.Agents.AI.Declarative.UnitTests/Microsoft.Agents.AI.Declarative.UnitTests.csproj
@@ -0,0 +1,17 @@
+
+
+
+ $(NoWarn);IDE1006;VSTHRD200
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/dotnet/tests/Microsoft.Agents.AI.Declarative.UnitTests/PromptAgents.cs b/dotnet/tests/Microsoft.Agents.AI.Declarative.UnitTests/PromptAgents.cs
new file mode 100644
index 0000000000..163e4ded18
--- /dev/null
+++ b/dotnet/tests/Microsoft.Agents.AI.Declarative.UnitTests/PromptAgents.cs
@@ -0,0 +1,386 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using Microsoft.Bot.ObjectModel;
+
+namespace Microsoft.Agents.AI.Declarative.UnitTests;
+
+internal static class PromptAgents
+{
+ internal const string AgentWithEverything =
+ """
+ kind: Prompt
+ name: AgentName
+ description: Agent description
+ instructions: You are a helpful assistant.
+ model:
+ id: gpt-4o
+ options:
+ temperature: 0.7
+ maxOutputTokens: 1024
+ topP: 0.9
+ topK: 50
+ frequencyPenalty: 0.0
+ presencePenalty: 0.0
+ seed: 42
+ responseFormat: text
+ stopSequences:
+ - "###"
+ - "END"
+ - "STOP"
+ allowMultipleToolCalls: true
+ tools:
+ - kind: codeInterpreter
+ inputs:
+ - kind: HostedFileContent
+ FileId: fileId123
+ - kind: function
+ name: GetWeather
+ description: Get the weather for a given location.
+ parameters:
+ - name: location
+ type: string
+ description: The city and state, e.g. San Francisco, CA
+ required: true
+ - name: unit
+ type: string
+ description: The unit of temperature. Possible values are 'celsius' and 'fahrenheit'.
+ required: false
+ enum:
+ - celsius
+ - fahrenheit
+ - kind: mcp
+ serverName: PersonInfoTool
+ serverDescription: Get information about a person.
+ connection:
+ kind: AnonymousConnection
+ endpoint: https://my-mcp-endpoint.com/api
+ allowedTools:
+ - "GetPersonInfo"
+ - "UpdatePersonInfo"
+ - "DeletePersonInfo"
+ approvalMode:
+ kind: HostedMcpServerToolRequireSpecificApprovalMode
+ AlwaysRequireApprovalToolNames:
+ - "UpdatePersonInfo"
+ - "DeletePersonInfo"
+ NeverRequireApprovalToolNames:
+ - "GetPersonInfo"
+ - kind: webSearch
+ name: WebSearchTool
+ description: Search the web for information.
+ - kind: fileSearch
+ name: FileSearchTool
+ description: Search files for information.
+ ranker: default
+ scoreThreshold: 0.5
+ maxResults: 5
+ maxContentLength: 2000
+ vectorStoreIds:
+ - 1
+ - 2
+ - 3
+ """;
+
+ internal const string AgentWithOutputSchema =
+ """
+ kind: Prompt
+ name: Translation Assistant
+ description: A helpful assistant that translates text to a specified language.
+ model:
+ id: gpt-4o
+ options:
+ temperature: 0.9
+ topP: 0.95
+ instructions: You are a helpful assistant. You answer questions in {language}. You return your answers in a JSON format.
+ additionalInstructions: You must always respond in the specified language.
+ tools:
+ - kind: codeInterpreter
+ template:
+ format: PowerFx # Mustache is the other option
+ parser: None # Prompty and XML are the other options
+ inputSchema:
+ properties:
+ language: string
+ outputSchema:
+ properties:
+ language:
+ type: string
+ required: true
+ description: The language of the answer.
+ answer:
+ type: string
+ required: true
+ description: The answer text.
+ """;
+
+ internal const string AgentWithApiKeyConnection =
+ """
+ kind: Prompt
+ name: AgentName
+ description: Agent description
+ instructions: You are a helpful assistant.
+ model:
+ id: gpt-4o
+ connection:
+ kind: ApiKey
+ endpoint: https://my-azure-openai-endpoint.openai.azure.com/
+ key: my-api-key
+ """;
+
+ internal const string AgentWithRemoteConnection =
+ """
+ kind: Prompt
+ name: AgentName
+ description: Agent description
+ instructions: You are a helpful assistant.
+ model:
+ id: gpt-4o
+ connection:
+ kind: Remote
+ endpoint: https://my-azure-openai-endpoint.openai.azure.com/
+ """;
+
+ internal const string AgentWithVariableReferences =
+ """
+ kind: Prompt
+ name: AgentName
+ description: Agent description
+ instructions: You are a helpful assistant.
+ model:
+ id: gpt-4o
+ options:
+ temperature: =Env.Temperature
+ topP: =Env.TopP
+ connection:
+ kind: apiKey
+ endpoint: =Env.OpenAIEndpoint
+ key: =Env.OpenAIApiKey
+ """;
+
+ internal const string OpenAIChatAgent =
+ """
+ kind: Prompt
+ name: Assistant
+ description: Helpful assistant
+ instructions: You are a helpful assistant. You answer questions in the language specified by the user. You return your answers in a JSON format.
+ model:
+ id: =Env.OPENAI_MODEL
+ options:
+ temperature: 0.9
+ topP: 0.95
+ connection:
+ kind: apiKey
+ key: =Env.OPENAI_APIKEY
+ outputSchema:
+ properties:
+ language:
+ type: string
+ required: true
+ description: The language of the answer.
+ answer:
+ type: string
+ required: true
+ description: The answer text.
+ """;
+
+ internal const string AgentWithCurrentModels =
+ """
+ kind: Prompt
+ name: AgentName
+ description: Agent description
+ instructions: You are a helpful assistant.
+ model:
+ id: gpt-4o
+ options:
+ temperature: 0.7
+ maxOutputTokens: 1024
+ topP: 0.9
+ topK: 50
+ frequencyPenalty: 0.7
+ presencePenalty: 0.7
+ seed: 42
+ responseFormat: text
+ stopSequences:
+ - "###"
+ - "END"
+ - "STOP"
+ allowMultipleToolCalls: true
+ chatToolMode: auto
+ """;
+
+ internal const string AgentWithCurrentModelsSnakeCase =
+ """
+ kind: Prompt
+ name: AgentName
+ description: Agent description
+ instructions: You are a helpful assistant.
+ model:
+ id: gpt-4o
+ options:
+ temperature: 0.7
+ max_output_tokens: 1024
+ top_p: 0.9
+ top_k: 50
+ frequency_penalty: 0.7
+ presence_penalty: 0.7
+ seed: 42
+ response_format: text
+ stop_sequences:
+ - "###"
+ - "END"
+ - "STOP"
+ allow_multiple_tool_calls: true
+ chat_tool_mode: auto
+ """;
+
+ internal const string Workflow =
+ """
+ kind: Workflow
+ trigger:
+
+ kind: OnConversationStart
+ id: workflow_demo
+ actions:
+
+ - kind: InvokeAzureAgent
+ id: question_student
+ conversationId: =System.ConversationId
+ agent:
+ name: StudentAgent
+
+ - kind: InvokeAzureAgent
+ id: question_teacher
+ conversationId: =System.ConversationId
+ agent:
+ name: TeacherAgent
+ output:
+ messages: Local.TeacherResponse
+
+ - kind: SetVariable
+ id: set_count_increment
+ variable: Local.TurnCount
+ value: =Local.TurnCount + 1
+
+ - kind: ConditionGroup
+ id: check_completion
+ conditions:
+
+ - condition: =!IsBlank(Find("CONGRATULATIONS", Upper(MessageText(Local.TeacherResponse))))
+ id: check_turn_done
+ actions:
+
+ - kind: SendActivity
+ id: sendActivity_done
+ activity: GOLD STAR!
+
+ - condition: =Local.TurnCount < 4
+ id: check_turn_count
+ actions:
+
+ - kind: GotoAction
+ id: goto_student_agent
+ actionId: question_student
+
+ elseActions:
+
+ - kind: SendActivity
+ id: sendActivity_tired
+ activity: Let's try again later...
+
+ """;
+
+ internal static readonly string[] s_stopSequences = ["###", "END", "STOP"];
+
+ internal static GptComponentMetadata CreateTestPromptAgent(string? publisher = "OpenAI", string? apiType = "Chat")
+ {
+ string agentYaml =
+ $"""
+ kind: Prompt
+ name: Test Agent
+ description: Test Description
+ instructions: You are a helpful assistant.
+ additionalInstructions: Provide detailed and accurate responses.
+ model:
+ id: gpt-4o
+ publisher: {publisher}
+ apiType: {apiType}
+ options:
+ modelId: gpt-4o
+ temperature: 0.7
+ maxOutputTokens: 1024
+ topP: 0.9
+ topK: 50
+ frequencyPenalty: 0.7
+ presencePenalty: 0.7
+ seed: 42
+ responseFormat: text
+ stopSequences:
+ - "###"
+ - "END"
+ - "STOP"
+ allowMultipleToolCalls: true
+ chatToolMode: auto
+ customProperty: customValue
+ connection:
+ kind: apiKey
+ endpoint: https://my-azure-openai-endpoint.openai.azure.com/
+ key: my-api-key
+ tools:
+ - kind: codeInterpreter
+ - kind: function
+ name: GetWeather
+ description: Get the weather for a given location.
+ parameters:
+ - name: location
+ type: string
+ description: The city and state, e.g. San Francisco, CA
+ required: true
+ - name: unit
+ type: string
+ description: The unit of temperature. Possible values are 'celsius' and 'fahrenheit'.
+ required: false
+ enum:
+ - celsius
+ - fahrenheit
+ - kind: mcp
+ serverName: PersonInfoTool
+ serverDescription: Get information about a person.
+ allowedTools:
+ - "GetPersonInfo"
+ - "UpdatePersonInfo"
+ - "DeletePersonInfo"
+ approvalMode:
+ kind: HostedMcpServerToolRequireSpecificApprovalMode
+ AlwaysRequireApprovalToolNames:
+ - "UpdatePersonInfo"
+ - "DeletePersonInfo"
+ NeverRequireApprovalToolNames:
+ - "GetPersonInfo"
+ connection:
+ kind: AnonymousConnection
+ endpoint: https://my-mcp-endpoint.com/api
+ - kind: webSearch
+ name: WebSearchTool
+ description: Search the web for information.
+ - kind: fileSearch
+ name: FileSearchTool
+ description: Search files for information.
+ vectorStoreIds:
+ - 1
+ - 2
+ - 3
+ outputSchema:
+ properties:
+ language:
+ type: string
+ required: true
+ description: The language of the answer.
+ answer:
+ type: string
+ required: true
+ description: The answer text.
+ """;
+
+ return AgentBotElementYaml.FromYaml(agentYaml);
+ }
+}