diff --git a/pentestagent/interface/tui.py b/pentestagent/interface/tui.py
index 00f15bb..0a888bb 100644
--- a/pentestagent/interface/tui.py
+++ b/pentestagent/interface/tui.py
@@ -2226,7 +2226,8 @@ Be concise. Use the actual data from notes."""
         elif cmd_lower == "/tools":
             # Open the interactive tools browser (split-pane).
             try:
-                await self.push_screen(ToolsScreen(tools=self.agent.get_tools()))
+                if self.agent:
+                    await self.push_screen(ToolsScreen(tools=self.agent.get_tools()))
             except Exception:
                 # Fallback: list tools in the system area if UI push fails
                 from ..runtime.runtime import detect_environment