structured_output.py
"""
Deepseek Structured Output
==========================
Cookbook example for `deepseek/structured_output.py`.
"""
from typing import List
from agno.agent import Agent, RunOutput # noqa
from agno.models.deepseek import DeepSeek
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!"
)
# Agent that uses JSON mode (recommended for DeepSeek).
# DeepSeek supports JSON mode (response_format={"type": "json_object"}) but not
# native/json_schema structured outputs, so use_json_mode=True is the reliable path.
json_mode_agent = Agent(
model=DeepSeek(id="deepseek-v4-flash"),
description="You help people write movie scripts.",
output_schema=MovieScript,
use_json_mode=True,
)
# Agent that uses native structured outputs (output_schema without JSON mode).
structured_output_agent = Agent(
model=DeepSeek(id="deepseek-v4-flash"),
description="You help people write movie scripts.",
output_schema=MovieScript,
)
# ---------------------------------------------------------------------------
# Run Agent
# ---------------------------------------------------------------------------
if __name__ == "__main__":
json_mode_agent.print_response("New York")
structured_output_agent.print_response("New York")
Run the Example
1
Set up your virtual environment
uv venv --python 3.12
source .venv/bin/activate
uv venv --python 3.12
.venv\Scripts\activate
2
Install dependencies
uv pip install -U agno openai
3
Export your DeepSeek API key
export DEEPSEEK_API_KEY="your_deepseek_api_key_here"
$Env:DEEPSEEK_API_KEY="your_deepseek_api_key_here"
4
Run the example
Save the code above as
structured_output.py, then run:python structured_output.py