ADK weather tool

ai/gen-ai-agents/oci_adk_projects/adk-weather-tool/README.md

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+# OCI Weather Assistant API
+
+A FastAPI-based service that integrates with Oracle Cloud Infrastructure's Generative AI Agent and uses OpenWeather API to provide real-time weather forecasts. The agent invokes the `get_weather` tool automatically when weather-related questions are asked.
+
+## Features
+
+- FastAPI backend with async support
+- OCI Generative AI Agent integration
+- Weather tool using OpenWeather API
+- `.env` configuration for secrets
+
+## Setup
+
+1. Clone the repo & install dependencies:
+
+```bash
+git clone https://github.com/your-username/oci-weather-assistant.git
+cd oci-weather-assistant
+pip install -r requirements.txt
+
+## Create a .env file in the root directory:
+
+OCI_AI_AGENT_ENDPOINT_ID=ocid1.generativeaiendpoint.oc1..example
+OCI_CONFIG_PROFILE=DEFAULT
+OCI_REGION=us-chicago-1
+OPENWEATHER_API_KEY=your_openweather_api_key
+
+## Run the app
+
+uvicorn main:app --reload --port 8000
+
+## UI
+
+To test the API via a simple UI, use the frontend from this repository:
+🔗 https://github.com/ralungei/oci-genai-agent-blackbelt

ai/gen-ai-agents/oci_adk_projects/adk-weather-tool/example.env

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+OCI_AI_AGENT_ENDPOINT_ID=ocid1.generativeaiendpoint.oc1..example
+OCI_CONFIG_PROFILE=DEFAULT
+OCI_REGION=us-chicago-1
+OPENWEATHER_API_KEY=your_openweather_api_key

ai/gen-ai-agents/oci_adk_projects/adk-weather-tool/main.py

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+from __future__ import annotations
+
+import os
+from typing import Dict, Optional
+
+import requests
+from dotenv import load_dotenv
+from oci.addons.adk import Agent, AgentClient, tool
+from fastapi import FastAPI
+from fastapi.middleware.cors import CORSMiddleware
+from pydantic import BaseModel
+
+# ---------------------------------------------------------------------------
+# Environment setup
+# ---------------------------------------------------------------------------
+
+load_dotenv(dotenv_path=os.path.join(os.path.dirname(__file__), ".env"))
+
+OCI_AI_AGENT_ENDPOINT_ID = os.getenv("OCI_AI_AGENT_ENDPOINT_ID")
+OCI_CONFIG_PROFILE = os.getenv("OCI_CONFIG_PROFILE", "DEFAULT")
+OCI_REGION = os.getenv("OCI_REGION", "us-chicago-1")
+OPENWEATHER_API_KEY = os.getenv("OPENWEATHER_API_KEY", "")
+
+
+# ---------------------------------------------------------------------------
+# Tool definition
+# ---------------------------------------------------------------------------
+
+@tool
+def get_weather(location: str, units: str = "metric") -> Dict[str, str]:
+    """Return the current weather for *location* using OpenWeatherMap.
+
+    Args:
+        location: City name (e.g. "Seattle" or "Seattle,US").
+        units:   Measurement system – "metric" (°C), "imperial" (°F), or
+                  "standard" (Kelvin). Defaults to "metric".
+
+    Returns:
+        A dict ready for the agent response, containing temperature, unit,
+        humidity, wind speed and a short description.
+    """
+
+    base_url = "https://api.openweathermap.org/data/2.5/weather"
+    params = {
+        "q": location,
+        "appid": OPENWEATHER_API_KEY,
+        "units": units,
+    }
+
+    try:
+        resp = requests.get(base_url, params=params, timeout=10)
+        resp.raise_for_status()
+    except requests.RequestException as exc:
+        raise RuntimeError(f"Weather service unavailable: {exc}") from exc
+
+    data = resp.json()
+
+    main = data["main"]
+    weather = data["weather"][0]
+    wind = data.get("wind", {})
+
+    unit_symbol = {"metric": "°C", "imperial": "°F", "standard": "K"}.get(units, "°?")
+
+    return {
+        "location": location,
+        "temperature": main["temp"],
+        "unit": unit_symbol,
+        "description": weather["description"],
+        "humidity_percent": main.get("humidity"),
+        "wind_speed_mps": wind.get("speed"),
+    }
+
+
+# ---------------------------------------------------------------------------
+# FastAPI setup
+# ---------------------------------------------------------------------------
+app = FastAPI()
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=["*"],
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
+# ---------------------------------------------------------------------------
+# Agent setup (reuse from main)
+# ---------------------------------------------------------------------------
+if not OCI_AI_AGENT_ENDPOINT_ID:
+    raise SystemExit("OCI_AI_AGENT_ENDPOINT_ID is not set. Check your .env file.")
+
+client = AgentClient(
+    auth_type="api_key",
+    profile=OCI_CONFIG_PROFILE,
+    region=OCI_REGION,
+)
+
+agent = Agent(
+    client=client,
+    agent_endpoint_id=OCI_AI_AGENT_ENDPOINT_ID,
+    instructions=(
+        "You are a helpful assistant that answers weather questions. "
+        "Always invoke the get_weather tool when the user asks about the forecast."
+    ),
+    tools=[get_weather],
+)
+
+agent.setup()
+
+# ---------------------------------------------------------------------------
+# API request/response models
+# ---------------------------------------------------------------------------
+class ChatRequest(BaseModel):
+    question: str
+    execute_functions: Optional[bool] = True
+    session_id: Optional[str] = None
+
+# ---------------------------------------------------------------------------
+# /chat endpoint
+# ---------------------------------------------------------------------------
+@app.post("/chat")
+async def chat(request: ChatRequest):
+    try:
+        response = await agent.run_async(request.question)
+        return {
+            "answer": response.final_output,
+            "session_id": request.session_id or "session123"
+        }
+    except Exception as e:
+        return {"answer": str(e), "session_id": request.session_id or "session123"}
+
+
+if __name__ == "__main__":
+    main()

ai/gen-ai-agents/oci_adk_projects/adk-weather-tool/requirements.txt

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+fastapi==0.111.0
+uvicorn==0.29.0
+requests==2.31.0
+python-dotenv==1.0.1
+oci==2.114.1