Update tools/arxiv_tool.py

tools/arxiv_tool.py

@@ -10,8 +10,16 @@ class ArxivSearchTool(Tool):
     name = "search_arxiv"
     description = "Search ArXiv for papers matching the query"
     inputs = {
-        'query': {'type': 'string', 'description': 'The search query for papers'},
-        'max_results': {'type': 'integer', 'description': 'Maximum number of results to return'}
+        'query': {
+            'type': 'string', 
+            'description': 'The search query for papers',
+            'nullable': True
+        },
+        'max_results': {
+            'type': 'integer', 
+            'description': 'Maximum number of results to return',
+            'nullable': True
+        }
     }
     output_type = "string"
 
@@ -69,7 +77,13 @@ class ArxivSearchTool(Tool):
 class LatestPapersTool(Tool):
     name = "get_latest_papers"
     description = "Get papers from the last N days from saved results"
-    inputs = {'days_back': {'type': 'integer', 'description': 'Number of days to look back'}}
+    inputs = {
+        'days_back': {
+            'type': 'integer', 
+            'description': 'Number of days to look back',
+            'nullable': True
+        }
+    }
     output_type = "string"
 
     def forward(self, days_back: int = 1) -> str: