OpenAI Structured Output With Tools

Combine web search tools with a Pydantic output schema on gpt-5-mini.

structured_output_with_tools.py
"""
Openai Structured Output With Tools
===================================

Cookbook example for `openai/responses/structured_output_with_tools.py`.
"""

from typing import List

from agno.agent import Agent
from agno.models.openai import OpenAIResponses
from agno.tools.websearch import WebSearchTools
from pydantic import BaseModel, Field

# ---------------------------------------------------------------------------
# Create Agent
# ---------------------------------------------------------------------------


class MovieScript(BaseModel):
    setting: str = Field(
        ..., description="Provide a nice setting for a blockbuster movie."
    )
    ending: str = Field(
        ...,
        description="Ending of the movie. If not available, provide a happy ending.",
    )
    genre: str = Field(
        ...,
        description="Genre of the movie. If not available, select action, thriller or romantic comedy.",
    )
    name: str = Field(..., description="Give a name to this movie")
    characters: List[str] = Field(..., description="Name of characters for this movie.")
    storyline: str = Field(
        ..., description="3 sentence storyline for the movie. Make it exciting!"
    )


structured_output_agent = Agent(
    model=OpenAIResponses(id="gpt-5-mini"),
    tools=[WebSearchTools()],
    instructions="Use the tools to get the information you need. You have access to the DuckDuckGo search tools",
    description="You write movie scripts.",
    output_schema=MovieScript,
)

structured_output_agent.print_response("New York", stream=True)

# ---------------------------------------------------------------------------
# Run Agent
# ---------------------------------------------------------------------------

if __name__ == "__main__":
    pass

Run the Example

Set up your virtual environment

uv venv --python 3.12
source .venv/bin/activate

Install dependencies

uv pip install -U agno ddgs openai

Export your OpenAI API key

export OPENAI_API_KEY="your_openai_api_key_here"

Run the example

Save the code above as structured_output_with_tools.py, then run:

python structured_output_with_tools.py

Full source: cookbook/90_models/openai/responses/structured_output_with_tools.py