diff --git a/src/SiteInterface.php b/src/SiteInterface.php
index 01403bc..0c696a1 100644
--- a/src/SiteInterface.php
+++ b/src/SiteInterface.php
@@ -32,4 +32,9 @@ public function publicMeta(Path $at): PublicMeta;
     public function hasPublicContent(Path $at): bool;
 
     public function publicContent(Path $at): PublicContent;
+
+    /**
+     * @return string[]
+     */
+    public function titles(Path $at): array
 }