Python: [Bug]: Foundry Hosted Agent Library - Unable to access metadata and client headers

[ashishmundra4001]

Description

I am deploying my Agent to Foundry Hosted Agent.

I have a middleware like below:

class UserContextAgentMiddleware(AgentMiddleware):

    async def process(
        self,
        context: AgentContext,
        next: Callable[[], Awaitable[None]],
    ) -> None:

This is how I will invoke my Agent from Postman:
http://localhost:8088/responses
headers:
Authorization: Bearer ey
x-client-abc: some value
traceparent: 00-abc-01
body:
{
"agent": {
"name": "MyAgent",
"type": "agent_reference"
},
"stream": false,
"input": [
{"type": "message", "role": "user", "content": "Arrival time of Bus at IT."},
{"type": "message", "role": "assistant", "content": "in next 5 mins"},
{"type": "message", "role": "user", "content": "KRB."}
],
"metadata": {
"latitude": "1.2976",
"longitude": "103.7767",
"skipobo": "True",
"traceparent": "00-a0a00417202600001234cafeface5677-a0a0041720260001-01"
}
}

Earlier when I was using previous hosting adapter library (from azure.ai.agentserver.agentframework import from_agent_framework) I was able to read metadata sent in /responses api as below:

    if hasattr(context.agent, '_request_headers'):                
                    request_data = context.agent._request_headers

But now with this new library (from agent_framework_foundry_hosting import ResponsesHostServer), how can I read following in Middleware?

• metadata
• Authorization Header (so that I can get a OBO token in my agent which I will later send to my API tool)
• x-client-* (for any additional headers that I will send to my API tool)
• traceparent header - this is sent by caller of Agent and I want to maintain that (so that I can send that too to my API for end-to-end traceability from caller-Agent-Tools)

Code Sample

Error Messages / Stack Traces

Package Versions

agent-framework-core-1.2.2 agent-framework-foundry-hosting-1.0.0a260429

Python Version

Python 3.13

Additional Context

No response