from agno.agent import Agent
from agno.models.anthropic import Claude
from agno.tools import Function
from pydantic import BaseModel
class WeatherInfo(BaseModel):
"""Structured output schema for weather information."""
location: str
temperature: float
unit: str
condition: str
def get_weather(location: str, unit: str = "celsius") -> str:
temp = 72 if unit == "fahrenheit" else 22
return f"Weather in {location}: {temp}°{unit}, Sunny"
# Create function with strict mode enabled
weather_tool = Function(
name="get_weather",
description="Get current weather information for a location",
parameters={
"type": "object",
"properties": {
"location": {
"type": "string",
"description": "The city and state, e.g. San Francisco, CA",
},
"unit": {
"type": "string",
"enum": ["celsius", "fahrenheit"],
"description": "Temperature unit",
},
},
"required": ["location"],
"additionalProperties": False,
},
strict=True, # Enable strict mode for validated tool parameters
entrypoint=get_weather,
)
# Agent with both structured outputs and strict tool
agent = Agent(
model=Claude(id="claude-sonnet-4-5-20250929"),
tools=[weather_tool],
output_schema=WeatherInfo,
description="You help users get weather information.",
)
# The agent will use strict tool validation and return structured output
agent.print_response("What's the weather like in San Francisco?")
