Structured output example using Ollama with the OpenAI Responses API.

This demonstrates using Pydantic models for structured output with Ollama’s Responses API endpoint.

"""Structured output example using Ollama with the OpenAI Responses API.

This demonstrates using Pydantic models for structured output with Ollama's
Responses API endpoint.

Requirements:
- Ollama v0.13.3 or later running locally
- Run: ollama pull llama3.1:8b
"""

from typing import List

from agno.agent import Agent
from agno.models.ollama import OllamaResponses
from pydantic import BaseModel, Field

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


class MovieScript(BaseModel):
    name: str = Field(..., description="Give a name to this movie")
    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.",
    )
    characters: List[str] = Field(..., description="Name of characters for this movie.")
    storyline: str = Field(
        ..., description="3 sentence storyline for the movie. Make it exciting!"
    )


agent = Agent(
    model=OllamaResponses(id="gpt-oss:20b"),
    description="You write movie scripts.",
    output_schema=MovieScript,
)

agent.print_response("New York")

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

if __name__ == "__main__":
    pass

Run the Example

# Clone and setup repo
git clone https://github.com/agno-agi/agno.git
cd agno/cookbook/90_models/ollama/responses

# Create and activate virtual environment
./scripts/demo_setup.sh
source .venvs/demo/bin/activate

python structured_output.py