diff --git a/altk/pre_tool/sparc/function_calling/pipeline/adapters.py b/altk/pre_tool/sparc/function_calling/pipeline/adapters.py
index 4826813..d8b55ee 100644
--- a/altk/pre_tool/sparc/function_calling/pipeline/adapters.py
+++ b/altk/pre_tool/sparc/function_calling/pipeline/adapters.py
@@ -56,7 +56,7 @@ def get_tools_inventory_summary(self) -> List[Dict[str, Any]]:
                 "tool_name": spec.function.name,
                 "tool_description": spec.function.description,
                 "tool_parameters": {
-                    prop_name: prop_d["type"]
+                    prop_name: prop_d.get("type", "object")
                     for prop_name, prop_d in spec.function.parameters.get(
                         "properties", {}
                     ).items()