Update tools.py

Removing the retriever.

tools.py

@@ -1,4 +1,4 @@
-# tools.py
+# tools.py (VERSION MODIFICADA SIN RETRIEVER)
 import os
 from dotenv import load_dotenv
 from langchain_community.tools.tavily_search import TavilySearchResults
@@ -10,6 +10,8 @@ from datetime import datetime # Added for get_current_datetime tool
 from langchain.tools import Tool
 from langchain.utilities import PythonREPL
 
+# REMOVED: from retriever import get_retriever # This import is removed
+
 # Load environment variables
 load_dotenv()
 
@@ -60,7 +62,7 @@ def wiki_search(query: str) -> dict:
     Search Wikipedia for a given query and return up to 2 relevant document results.
     Useful for factual questions about people, places, events, etc.
     Input should be a string representing the search query.
-    Example: "Barack Obama"
+    Example: {"query": "Barack Obama"}
     """
     try:
         if not query.strip():
@@ -85,7 +87,7 @@ def web_search(query: str) -> dict:
     Search the web using Tavily for a given query and return up to 3 relevant snippets.
     Useful for up-to-date information, current events, or general web searches.
     Input should be a string representing the search query. Requires TAVILY_API_KEY environment variable.
-    Example: "latest news on AI"
+    Example: {"query": "latest news on AI"}
     """
     try:
         if not query.strip():
@@ -169,8 +171,8 @@ if __name__ == "__main__":
 
     # Test Search Tools
     print("\n--- Search Tools Test ---")
-    print(f"Wiki Search 'Artificial Intelligence': {wiki_search.invoke('Artificial Intelligence')['wiki_results'][:200]}...") # Limit output for brevity
-    print(f"Web Search 'Hugging Face new features': {web_search.invoke('Hugging Face new features')['web_results'][:200]}...") # Limit output for brevity
+    print(f"Wiki Search 'Artificial Intelligence': {wiki_search.invoke({'query': 'Artificial Intelligence'})['wiki_results'][:200]}...") # Limit output for brevity
+    print(f"Web Search 'Hugging Face new features': {web_search.invoke({'query': 'Hugging Face new features'})['web_results'][:200]}...") # Limit output for brevity
 
     # Test Utility Tool
     print("\n--- Utility Tools Test ---")