diff --git a/packages/cli/src/config/extension-manager.ts b/packages/cli/src/config/extension-manager.ts
index e201c0aeec..8d62d02311 100644
--- a/packages/cli/src/config/extension-manager.ts
+++ b/packages/cli/src/config/extension-manager.ts
@@ -862,6 +862,7 @@ Would you like to attempt to install via "git clone" instead?`,
         installMetadata,
         mcpServers: config.mcpServers,
         excludeTools: config.excludeTools,
+        plan: config.plan,
         hooks,
         isActive: this.extensionEnablementManager.isEnabled(
           config.name,
diff --git a/packages/cli/src/config/extension.ts b/packages/cli/src/config/extension.ts
index 815cf23ece..9691967bd7 100644
--- a/packages/cli/src/config/extension.ts
+++ b/packages/cli/src/config/extension.ts
@@ -28,6 +28,7 @@ export interface ExtensionConfig {
   contextFileName?: string | string[];
   excludeTools?: string[];
   settings?: ExtensionSetting[];
+  plan?: { directory?: string };
   /**
    * Custom themes contributed by this extension.
    * These themes will be registered when the extension is activated.
diff --git a/packages/core/src/config/config.ts b/packages/core/src/config/config.ts
index 76e49a696b..c39055023f 100644
--- a/packages/core/src/config/config.ts
+++ b/packages/core/src/config/config.ts
@@ -308,6 +308,7 @@ export interface GeminiCLIExtension {
   mcpServers?: Record<string, MCPServerConfig>;
   contextFiles: string[];
   excludeTools?: string[];
+  plan?: PlanSettings;
   id: string;
   hooks?: { [K in HookEventName]?: HookDefinition[] };
   settings?: ExtensionSetting[];