diff --git a/packages/kilo-vscode/src/KiloProvider.ts b/packages/kilo-vscode/src/KiloProvider.ts
index 9a25e3e1b38..2a46f1d01f0 100644
--- a/packages/kilo-vscode/src/KiloProvider.ts
+++ b/packages/kilo-vscode/src/KiloProvider.ts
@@ -1629,6 +1629,7 @@ export class KiloProvider implements vscode.WebviewViewProvider, TelemetryProper
         description: a.description,
         mode: a.mode,
         native: a.native,
+        hidden: a.hidden,
         color: a.color,
         deprecated: a.deprecated,
         permission: a.permission,
diff --git a/packages/kilo-vscode/webview-ui/src/components/settings/AgentBehaviourTab.tsx b/packages/kilo-vscode/webview-ui/src/components/settings/AgentBehaviourTab.tsx
index b2f1b0f9e74..ed5583a9e3c 100644
--- a/packages/kilo-vscode/webview-ui/src/components/settings/AgentBehaviourTab.tsx
+++ b/packages/kilo-vscode/webview-ui/src/components/settings/AgentBehaviourTab.tsx
@@ -82,7 +82,12 @@ const AgentBehaviourTab: Component = () => {
   })
 
   const agentNames = createMemo(() => {
-    const names = session.allAgents().map((a) => a.name)
+    // Exclude server-side hidden internal modes (compaction, title, summary)
+    // from the list. Config-only agents are still added below.
+    const names = session
+      .allAgents()
+      .filter((a) => !a.hidden)
+      .map((a) => a.name)
     // Also include any agents from config that might not be in the agent list
     const agents = Object.keys(config().agent ?? {})
     for (const name of agents) {