.NET: [Bug]: Tool calls do not work without providing them in tools array

[KornelijusS]

Description

When using GetAIAgentAsync without providing the tools list, the tools are being map in tool map using AsAITool, which instead of getting the real function anem and description OpenAIResponsesChatClient.ResponseToolAITool(tool), which uses Name => Tool.GetType().Name this means that the tool will always have the worng name in the map and will never be invocated. The reason I need this is beacause I am trying to resolve the function calls my self, but function invocation never reaches the FunctionInvoker as toolMap.TryGetValue is always false. The correct information remain inside AITool.Tool

The main problem is that there is no way to manually resolve the tool calls without always providing their method in tools array, so even manually handlem is not an options as middleware also does not get it

Code Sample

IChatClient GetChatClient(IChatClient chatClient)
{
    var functionClient = new FunctionInvokingChatClient(chatClient);
    functionClient.FunctionInvoker = FunctionInvoker;
    functionClient.TerminateOnUnknownCalls = false;
    return functionClient;
}

ValueTask<object?> FunctionInvoker(FunctionInvocationContext context, CancellationToken token)
{
    if (context.Function.Name == "GetWeather")
    {
        return new ValueTask<object?>(
            $"The weather in {context.Arguments.GetValueOrDefault("location")} is cloudy with a high of 15°C.");
    }

    return new ValueTask<object?>(DateTimeOffset.UtcNow);
}
var modifiedAgent =
    await aiProjectClient.GetAIAgentAsync("TestKS", clientFactory: GetChatClient);

Error Messages / Stack Traces

Error: Requested function "GetWeather" not found.

Package Versions

Azure.AI.Projects 1.2.0-beta.5; Microsoft.Agents.AI.AzureAI 1.0.0-preview.260205.1

.NET Version

.NET10.0

Additional Context

No response

[KornelijusS]

Or do I understand everything wrong and ChatClientAgent does not have the possibility to call non-invocable functions? As I found that you can do it using ResponsesClient, but I want to use Project Conversation and to not have to manually add previousResponseId. The only workaround I found now is to create and agent with read methods and then later get it but use a fake method and intercept with middle ware or FunctionInvocator. To sum up, is there currently a way to manually resolve function calls in ChatClientAgent? if so how?