diff --git a/src/pyra/config/tui.py b/src/pyra/config/tui.py
index c9d0556..34d99a1 100644
--- a/src/pyra/config/tui.py
+++ b/src/pyra/config/tui.py
@@ -149,6 +149,14 @@ class _AITab(VerticalScroll):
         show_key = provider.requires_key
         self.query_one("#ai-key-row").display = show_key
         self.query_one("#ai-key-hint").display = show_key
+        if show_key:
+            try:
+                has_key = get_key(provider_id) is not None
+            except Exception:
+                has_key = False
+            key_input = self.query_one("#ai-key", Input)
+            key_input.placeholder = "set" if has_key else "not set"
+            key_input.value = ""
 
     def action_save(self) -> None:
         self._do_save()