Cohere Structured Output

Request JSON from Cohere Command A and validate it locally as a MovieScript.

structured_output.py
"""
Cohere Structured Output
========================

Cookbook example for `cohere/structured_output.py`.
"""

import asyncio
from typing import List

from agno.agent import Agent, RunOutput  # noqa
from agno.models.cohere import Cohere
from pydantic import BaseModel, Field
from rich.pretty import pprint  # noqa

# ---------------------------------------------------------------------------
# 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=Cohere(id="command-a-03-2025"),
    description="You help people write movie scripts.",
    output_schema=MovieScript,
)

# Get the response in a variable
response: RunOutput = structured_output_agent.run("New York")
pprint(response.content)

# ---------------------------------------------------------------------------
# Run Agent
# ---------------------------------------------------------------------------
if __name__ == "__main__":
    # --- Async ---
    asyncio.run(
        structured_output_agent.aprint_response(
            "Find a cool movie idea about London and write it."
        )
    )

The current Cohere adapter requests JSON Object mode and Agno attempts local validation against MovieScript.

output_schema describes the expected type. If parsing or validation fails, result.content can remain a string. Before accessing schema fields in a run result, use isinstance(result.content, YourSchema), replacing YourSchema with the class you passed as output_schema.

Run the Example

Set up your virtual environment

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

Install dependencies

uv pip install -U agno cohere

Export your Cohere API key

export CO_API_KEY="your_co_api_key_here"

Run the example

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

python structured_output.py

Full source: cookbook/90_models/cohere/structured_output.py