added wiki and replace duck duck go as only fallback

app.py

@@ -37,16 +37,38 @@ class ReliableSearchTool(Tool):
         
     def forward(self, query: str) -> str:
         """Search the web with retry logic and fallbacks."""
-        for attempt in range(self.max_retries):
-            try:
-                result = self.ddg_tool(query)
-                if result and len(result) > 50:
-                    return result
-            except Exception as e:
-                print(f"DuckDuckGo search failed (attempt {attempt+1}/{self.max_retries}): {e}")
-                time.sleep(2)
+        # Try Wikipedia first
+        try:
+            import requests
+            wiki_url = "https://en.wikipedia.org/api/rest_v1/page/summary/" + query.replace(" ", "_")
+            response = requests.get(wiki_url, timeout=5)
+            if response.status_code == 200:
+                data = response.json()
+                if 'extract' in data and data['extract']:
+                    return f"Wikipedia: {data['extract']}"
+        except Exception as e:
+            print(f"Wikipedia search failed: {e}")
+        
+        # Try Wikipedia search API
+        try:
+            search_url = "https://en.wikipedia.org/api/rest_v1/page/search/" + query.replace(" ", "%20")
+            response = requests.get(search_url, timeout=5)
+            if response.status_code == 200:
+                data = response.json()
+                if 'pages' in data and data['pages']:
+                    return f"Wikipedia search: {data['pages'][0].get('description', 'No description available')}"
+        except Exception as e:
+            print(f"Wikipedia search API failed: {e}")
+        
+        # Fallback to DuckDuckGo
+        try:
+            result = self.ddg_tool(query)
+            if result and len(result) > 50:
+                return result
+        except Exception as e:
+            print(f"DuckDuckGo search failed: {e}")
         
-        return f"I couldn't search for '{query}' due to search service limitations. Using my existing knowledge instead."
+        return f"Search unavailable for '{query}'. Please use your existing knowledge to answer."
 
 # --- Basic Agent Definition ---
 # ----- THIS IS WERE YOU CAN BUILD WHAT YOU WANT ------
@@ -74,7 +96,7 @@ class SlpMultiAgent:
         web_agent = CodeAgent(
             tools=[ReliableSearchTool(), VisitWebpageTool()],  # Use custom reliable search tool
             model=model,
-            additional_authorized_imports=["pandas", "time", "json", "requests"],
+            additional_authorized_imports=["pandas", "time", "json", "requests", "urllib"],
             max_steps=5,  # Keep sufficient steps for complex tasks
             name="WebAgent",
             verbosity_level=0,