Python: [Bug]: Encrypted content is not supported with this model for GPT-4.1 model

[Subash-Selvan]

Description

-what happened
gpt-4.1 model is not working in the below version
agent-framework-core 1.12.1
agent-framework-foundry 1.10.3
agent-framework-openai 1.11.0

It throws exception, attached below it is not generate desired outputs for simple question.

You can easily reproduce I have attached source code

Code Sample

client = FoundryChatClient(
        project_endpoint="https://xxxx.cognitiveservices.azure.com/",
        model="gpt-4.1",
        credential=_StaticTokenCredential("xxxxx")
    )
   
    async with Agent(
        client=client,
        name="GitHubAgent",
        instructions=(
            "You are a helpful assistant that can help users interact with GitHub. "
            "You can search for repositories, read file contents, check issues, and more. "
            "Always be clear about what operations you're performing."
            ),
        ) as agent:
        # Example 1: Get authenticated user information
        query1 = "Capital of USA"
        print(f"\nUser: {query1}")
        result1 = await agent.run(query1)
        print(f"Agent: {result1.text}")

Error Messages / Stack Traces

Exception has occurred: ChatClientException
("<class 'agent_framework_foundry._chat_client.FoundryChatClient'> service failed to complete the prompt: Error code: 400 - {'error': {'message': 'Encrypted content is not supported with this model.', 'type': 'invalid_request_error', 'param': 'include', 'code': None}}", BadRequestError("Error code: 400 - {'error': {'message': 'Encrypted content is not supported with this model.', 'type': 'invalid_request_error', 'param': 'include', 'code': None}}"))
httpx.HTTPStatusError: Client error '400 Bad Request' for url 'https://manulife-bot-foundry.cognitiveservices.azure.com/openai/v1/responses'
For more information check: https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/400

During handling of the above exception, another exception occurred:

openai.BadRequestError: Error code: 400 - {'error': {'message': 'Encrypted content is not supported with this model.', 'type': 'invalid_request_error', 'param': 'include', 'code': None}}

The above exception was the direct cause of the following exception:

  File "C:\Workspace\Eviden\Polaris\atos-ai-agents\src\atos_ai_agents\test.py", line 108, in github_mcp_example
    result1 = await agent.run(query1)
              ^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Workspace\Eviden\Polaris\atos-ai-agents\src\atos_ai_agents\test.py", line 112, in <module>
    asyncio.run(github_mcp_example())
agent_framework.exceptions.ChatClientException: ("<class 'agent_framework_foundry._chat_client.FoundryChatClient'> service failed to complete the prompt: Error code: 400 - {'error': {'message': 'Encrypted content is not supported with this model.', 'type': 'invalid_request_error', 'param': 'include', 'code': None}}", BadRequestError("Error code: 400 - {'error': {'message': 'Encrypted content is not supported with this model.', 'type': 'invalid_request_error', 'param': 'include', 'code': None}}"))

Package Versions

agent-framework-core -1.12.1, agent-framework-foundry-1.10.3,agent-framework-openai- 1.11.0

Python Version

Python 3.12

Additional Context

No response