GetResponseClient

[ahmadMahfoud]

Description

tools calling when using and GetResponseClient() cause the the error :
System.ClientModel.ClientResultException HResult=0x80131500 Message=Service request failed. Status: 400 (Bad Request)

Source=OpenAI StackTrace: at OpenAI.ClientPipelineExtensions.d__0.MoveNext() at System.Runtime.CompilerServices.ConfiguredValueTaskAwaitable2.MoveNext() at Microsoft.Agents.AI.ChatClientAgent.d__27`2.MoveNext() at AssistantAPI.Infrastructure.Agents.AssistantAgentService.d__11.MoveNext() in G:\Ahmed\Claude\AssistantAPI.Infrastructure\Agents\AssistantAgentService.cs:line 295

This exception was originally thrown at this call stack: OpenAI.ClientPipelineExtensions.ProcessMessageAsync(System.ClientModel.Primitives.ClientPipeline, System.ClientModel.Primitives.PipelineMessage, System.ClientModel.Primitives.RequestOptions) System.Runtime.CompilerServices.ConfiguredValueTaskAwaitable.ConfiguredValueTaskAwaiter.GetResult() in ConfiguredValueTaskAwaitable.cs OpenAI.Responses.ResponsesClient.CreateResponseAsync(System.ClientModel.BinaryContent, System.ClientModel.Primitives.RequestOptions) Microsoft.Extensions.AI.OpenAIResponsesChatClient.GetResponseAsync(System.Collections.Generic.IEnumerable<Microsoft.Extensions.AI.ChatMessage>, Microsoft.Extensions.AI.ChatOptions, System.Threading.CancellationToken) Microsoft.Extensions.AI.FunctionInvokingChatClient.GetResponseAsync(System.Collections.Generic.IEnumerable<Microsoft.Extensions.AI.ChatMessage>, Microsoft.Extensions.AI.ChatOptions, System.Threading.CancellationToken) Microsoft.Agents.AI.ChatClientAgent.RunCoreAsync<TAgentResponse, TChatClientResponse>(System.Func<Microsoft.Extensions.AI.IChatClient, System.Collections.Generic.List<Microsoft.Extensions.AI.ChatMessage>, Microsoft.Extensions.AI.ChatOptions, System.Threading.CancellationToken, System.Threading.Tasks.Task>, System.Func<TChatClientResponse, TAgentResponse>, System.Collections.Generic.IEnumerable<Microsoft.Extensions.AI.ChatMessage>, Microsoft.Agents.AI.AgentSession, Microsoft.Agents.AI.AgentRunOptions, System.Threading.CancellationToken) Microsoft.Agents.AI.ChatClientAgent.RunCoreAsync<TAgentResponse, TChatClientResponse>(System.Func<Microsoft.Extensions.AI.IChatClient, System.Collections.Generic.List<Microsoft.Extensions.AI.ChatMessage>, Microsoft.Extensions.AI.ChatOptions, System.Threading.CancellationToken, System.Threading.Tasks.Task>, System.Func<TChatClientResponse, TAgentResponse>, System.Collections.Generic.IEnumerable<Microsoft.Extensions.AI.ChatMessage>, Microsoft.Agents.AI.AgentSession, Microsoft.Agents.AI.AgentRunOptions, System.Threading.CancellationToken) AssistantAPI.Infrastructure.Agents.AssistantAgentService.RunAgentLoopAsync(AssistantAPI.Core.Entities.AgentsEntities.Run, Microsoft.Agents.AI.AIAgent, System.Collections.Generic.List<Microsoft.Extensions.AI.ChatMessage>, System.Collections.Generic.List<Microsoft.Extensions.AI.AITool>) , while if using GetChatCleint it works fime

Reproduction Steps

creating ResponseClient and use it tools causes api error in the response.

Expected behavior

it should call the tools and finish the response.

Actual behavior

System.ClientModel.ClientResultException HResult=0x80131500 Message=Service request failed. Status: 400 (Bad Request)

Source=OpenAI StackTrace: at OpenAI.ClientPipelineExtensions.d__0.MoveNext() at System.Runtime.CompilerServices.ConfiguredValueTaskAwaitable2.MoveNext() at Microsoft.Agents.AI.ChatClientAgent.d__27`2.MoveNext() at AssistantAPI.Infrastructure.Agents.AssistantAgentService.d__11.MoveNext() in G:\Ahmed\Claude\AssistantAPI.Infrastructure\Agents\AssistantAgentService.cs:line 295

This exception was originally thrown at this call stack: OpenAI.ClientPipelineExtensions.ProcessMessageAsync(System.ClientModel.Primitives.ClientPipeline, System.ClientModel.Primitives.PipelineMessage, System.ClientModel.Primitives.RequestOptions) System.Runtime.CompilerServices.ConfiguredValueTaskAwaitable.ConfiguredValueTaskAwaiter.GetResult() in ConfiguredValueTaskAwaitable.cs OpenAI.Responses.ResponsesClient.CreateResponseAsync(System.ClientModel.BinaryContent, System.ClientModel.Primitives.RequestOptions) Microsoft.Extensions.AI.OpenAIResponsesChatClient.GetResponseAsync(System.Collections.Generic.IEnumerable<Microsoft.Extensions.AI.ChatMessage>, Microsoft.Extensions.AI.ChatOptions, System.Threading.CancellationToken) Microsoft.Extensions.AI.FunctionInvokingChatClient.GetResponseAsync(System.Collections.Generic.IEnumerable<Microsoft.Extensions.AI.ChatMessage>, Microsoft.Extensions.AI.ChatOptions, System.Threading.CancellationToken) Microsoft.Agents.AI.ChatClientAgent.RunCoreAsync<TAgentResponse, TChatClientResponse>(System.Func<Microsoft.Extensions.AI.IChatClient, System.Collections.Generic.List<Microsoft.Extensions.AI.ChatMessage>, Microsoft.Extensions.AI.ChatOptions, System.Threading.CancellationToken, System.Threading.Tasks.Task>, System.Func<TChatClientResponse, TAgentResponse>, System.Collections.Generic.IEnumerable<Microsoft.Extensions.AI.ChatMessage>, Microsoft.Agents.AI.AgentSession, Microsoft.Agents.AI.AgentRunOptions, System.Threading.CancellationToken) Microsoft.Agents.AI.ChatClientAgent.RunCoreAsync<TAgentResponse, TChatClientResponse>(System.Func<Microsoft.Extensions.AI.IChatClient, System.Collections.Generic.List<Microsoft.Extensions.AI.ChatMessage>, Microsoft.Extensions.AI.ChatOptions, System.Threading.CancellationToken, System.Threading.Tasks.Task>, System.Func<TChatClientResponse, TAgentResponse>, System.Collections.Generic.IEnumerable<Microsoft.Extensions.AI.ChatMessage>, Microsoft.Agents.AI.AgentSession, Microsoft.Agents.AI.AgentRunOptions, System.Threading.CancellationToken) AssistantAPI.Infrastructure.Agents.AssistantAgentService.RunAgentLoopAsync(AssistantAPI.Core.Entities.AgentsEntities.Run, Microsoft.Agents.AI.AIAgent, System.Collections.Generic.List<Microsoft.Extensions.AI.ChatMessage>, System.Collections.Generic.List<Microsoft.Extensions.AI.AITool>)

Regression?

No response

Known Workarounds

use GetChatClient instead of GetResponseClient()

Configuration

No response

Other information

No response

[stephentoub]

Can you please share a minimal repro? We have lots of use of ResponsesClient with tools that are working correctly, so we need to know what the specifics of your use are that are causing issues.