add tools.py

tools.py

@@ -1,17 +1,20 @@
-"""
+import os
-Utility tools used by the deep agent.
-
-The functions are decorated with `@tool` from langchain and can be called by the agent.
-"""
-
 from langchain.tools import tool
 
 @tool
-def echo(text: str) -> str:
+def get_price(symbol: str) -> str:
-    """Return the same text – useful for demonstration."""
+    """Return the current price for a given stock symbol.
-    return f"Echo: {text}"
+    For demo purposes, this function returns a mocked value.
-
+    In a real implementation you would query an API such as Yahoo Finance or Alpha Vantage.
-@tool
+    """
-def add(a: int, b: int) -> int:
+    # Mocked response – replace with real API call
-    """Add two integers."""
+    prices = {
-    return a + b
+        "AAPL": 150.12,
+        "GOOG": 2750.45,
+        "MSFT": 299.87,
+        "TSLA": 720.33,
+    }
+    price = prices.get(symbol.upper(), None)
+    if price is None:
+        return f"Price for {symbol} not found."
+    return f"The current price of {symbol.upper()} is ${price:.2f}."