diff --git a/src/aipass/aipass/apps/aipass.py b/src/aipass/aipass/apps/aipass.py
index a3a8427f..555fb7f8 100644
--- a/src/aipass/aipass/apps/aipass.py
+++ b/src/aipass/aipass/apps/aipass.py
@@ -17,6 +17,7 @@ Auto-discovery architecture:
 
 import sys
 import importlib
+import traceback
 from pathlib import Path
 from typing import List, Any
 
@@ -59,7 +60,12 @@ def route_command(command: str, args: List[str], modules: List[Any]) -> bool:
             if module.handle_command(command, args):
                 return True
         except Exception as e:
+            # A module that owns this command but fails must not be masked as
+            # "Unknown command" — surface the real error (and traceback) to
+            # stderr so failures are diagnosable instead of silently swallowed.
             logger.error(f"[AIPASS] Module {module.__name__} error: {e}")
+            print(f"[AIPASS] {module.__name__.split('.')[-1]} failed: {e}", file=sys.stderr)
+            traceback.print_exc(file=sys.stderr)
     return False