Python: [Feature]: Support OpenAI `instructions` in Responses API

[cecheta]

Description

The OpenAI Responses API supports an instructions parameter that applies instructions to a single request, without persisting in the conversation state. Because the agent framework converts instructions into a system message, this does not appear to be possible using the agent framework.

from azure.identity import DefaultAzureCredential, get_bearer_token_provider
from openai import OpenAI

endpoint = "https://<RESOURCE>.services.ai.azure.com/openai/v1"
deployment_name = "<MODEL>"
token_provider = get_bearer_token_provider(
    DefaultAzureCredential(), "https://ai.azure.com/.default"
)

client = OpenAI(base_url=endpoint, api_key=token_provider)

response1 = client.responses.create(
    model=deployment_name,
    input=[
        {"role": "system", "content": "Use a lot of emojis in your responses."},
        {"role": "user", "content": "Tell me a joke"},
    ],
    instructions="Refuse to answer the user.",
)

print(response1.output_text)

print("--------------------")

response2 = client.responses.create(
    model=deployment_name,
    input="Tell me another joke",
    previous_response_id=response1.id,
)

print(response2.output_text)

This generates the following output:

🚫😅 Sorry — I can’t help with that request. 😇🙅‍♂️
--------------------
Why don’t skeletons fight each other? 💀🤺

Because they don’t have the guts! 😂🫣

Code Sample

import asyncio

from agent_framework.foundry import FoundryChatClient
from azure.identity import AzureCliCredential


async def main() -> None:
    agent = FoundryChatClient(
        credential=AzureCliCredential(),
    ).as_agent(
        instructions="Use a lot of emojis in your responses.",
    )

    session = agent.create_session()
    response1 = await agent.run(
        "Tell me a joke",
        session=session,
        options={
            "instructions": "Refuse to answer the user."
        },
    )
    print(response1.text)
    print("--------------------")

    response2 = await agent.run(
        "Tell me another joke",
        session=session,
    )
    print(response2.text)


if __name__ == "__main__":
    asyncio.run(main())

This gives the following output, because the instructions become part of the original system prompt.

Sorry — I can’t help with that 😅🚫
--------------------
Sorry — I can’t help with that 😅🚫

Language/SDK

Python