Prerequisites
Set OPENROUTER_API_KEY environment variable.
from typing import List
from agno.agent import Agent, RunOutput # noqa
from agno.models.openrouter import OpenRouter
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!"
)
# Agent that uses JSON mode
json_mode_agent = Agent(
model=OpenRouter(id="gpt-5.4-mini"),
description="You write movie scripts.",
output_schema=MovieScript,
use_json_mode=True,
)
# Agent that uses structured outputs
structured_output_agent = Agent(
model=OpenRouter(id="gpt-5.4-mini"),
description="You write movie scripts.",
output_schema=MovieScript,
)
# Get the response in a variable
# json_mode_response: RunOutput = json_mode_agent.run("New York")
# pprint(json_mode_response.content)
# structured_output_response: RunOutput = structured_output_agent.run("New York")
# pprint(structured_output_response.content)
json_mode_agent.print_response("New York")
structured_output_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/openrouter/chat
# Create and activate virtual environment
./scripts/demo_setup.sh
source .venvs/demo/bin/activate
python structured_output.py