Unexpected output type, ignoring: <class 'openai.types.responses.response_output_item.McpCall'>

[codefromthecrypt]

Describe the bug

I get this warning using HostedMCPTool in an agent

Unexpected output type, ignoring: <class 'openai.types.responses.response_output_item.McpCall'>

A clear and concise description of what the bug is.

Debug information

• Agents SDK version: 0.0.16
• Python version: 3.13.3

Repro steps

 OPENAI_API_KEY=sk-nottellin uv run -q  main.py 

main.py

# /// script
# requires-python = ">=3.13"
# dependencies = ["openai-agents~=0.0.16"]
# ///
import asyncio

from agents import Agent, HostedMCPTool, Runner


async def main():
    agent = Agent(
        name="Assistant",
        tools=[
            HostedMCPTool(
                tool_config={
                    "type": "mcp",
                    "server_label": "gitmcp",
                    "server_url": "https://gitmcp.io/elastic/elasticsearch",
                    "require_approval": "never",
                }
            )
        ],
    )

    res = await Runner.run(agent, "Which language is this repo written in?")
    print(res.final_output)


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

Expected behavior

expect no warnings