diff --git a/lib/AppInfo/Application.php b/lib/AppInfo/Application.php
index 5bd8dd0e..abfd751f 100644
--- a/lib/AppInfo/Application.php
+++ b/lib/AppInfo/Application.php
@@ -75,11 +75,11 @@ class Application extends App implements IBootstrap
         $context->registerEventListener(NodeDeletedEvent::class, PostDeleteListener::class);
 
         // Register clusters backends
-        ClustersBackend\Manager::register('albums', ClustersBackend\AlbumsBackend::class);
-        ClustersBackend\Manager::register('tags', ClustersBackend\TagsBackend::class);
-        ClustersBackend\Manager::register('places', ClustersBackend\PlacesBackend::class);
-        ClustersBackend\Manager::register('recognize', ClustersBackend\RecognizeBackend::class);
-        ClustersBackend\Manager::register('facerecognition', ClustersBackend\FaceRecognitionBackend::class);
+        ClustersBackend\AlbumsBackend::register();
+        ClustersBackend\TagsBackend::register();
+        ClustersBackend\PlacesBackend::register();
+        ClustersBackend\RecognizeBackend::register();
+        ClustersBackend\FaceRecognitionBackend::register();
     }
 
     public function boot(IBootContext $context): void
diff --git a/lib/ClustersBackend/AlbumsBackend.php b/lib/ClustersBackend/AlbumsBackend.php
index 91d2acc7..a008b017 100644
--- a/lib/ClustersBackend/AlbumsBackend.php
+++ b/lib/ClustersBackend/AlbumsBackend.php
@@ -41,11 +41,16 @@ class AlbumsBackend extends Backend
         $this->request = $request;
     }
 
-    public function appName(): string
+    public static function appName(): string
     {
         return 'Albums';
     }
 
+    public static function clusterType(): string
+    {
+        return 'albums';
+    }
+
     public function isEnabled(): bool
     {
         return Util::albumsIsEnabled();
@@ -105,6 +110,11 @@ class AlbumsBackend extends Backend
         return array_values($list);
     }
 
+    public static function getClusterId(array $cluster)
+    {
+        return $cluster['album_id'];
+    }
+
     public function getPhotos(string $name, ?int $limit = null): array
     {
         // Get album
diff --git a/lib/ClustersBackend/Backend.php b/lib/ClustersBackend/Backend.php
index 89c90f3f..8ad162ef 100644
--- a/lib/ClustersBackend/Backend.php
+++ b/lib/ClustersBackend/Backend.php
@@ -31,7 +31,12 @@ abstract class Backend
      * A human-readable name for the app.
      * Used for error messages.
      */
-    abstract public function appName(): string;
+    abstract static public function appName(): string;
+
+    /**
+     * Get name of the cluster type.
+     */
+    abstract static public function clusterType(): string;
 
     /**
      * Whether the app is enabled for the current user.
@@ -58,6 +63,11 @@ abstract class Backend
      */
     abstract public function getClusters(): array;
 
+    /**
+     * Get a cluster ID for the given cluster.
+     */
+    abstract static public function getClusterId(array $cluster);
+
     /**
      * Get a list of photos with any extra parameters for the given cluster
      * Used for preview generation and download.
@@ -112,4 +122,12 @@ abstract class Backend
     {
         return (int) $photo['fileid'];
     }
+
+    /**
+     * Register the backend. Do not override.
+     */
+    public static function register(): void
+    {
+        Manager::register(static::clusterType(), static::class);
+    }
 }
diff --git a/lib/ClustersBackend/FaceRecognitionBackend.php b/lib/ClustersBackend/FaceRecognitionBackend.php
index 6e81c8e6..2ddce61d 100644
--- a/lib/ClustersBackend/FaceRecognitionBackend.php
+++ b/lib/ClustersBackend/FaceRecognitionBackend.php
@@ -46,11 +46,16 @@ class FaceRecognitionBackend extends Backend
         $this->config = $config;
     }
 
-    public function appName(): string
+    public static function appName(): string
     {
         return 'Face Recognition';
     }
 
+    public static function clusterType(): string
+    {
+        return 'facerecognition';
+    }
+
     public function isEnabled(): bool
     {
         return Util::facerecognitionIsInstalled()
@@ -134,6 +139,11 @@ class FaceRecognitionBackend extends Backend
         return $faces;
     }
 
+    public static function getClusterId(array $cluster)
+    {
+        return $cluster['id'];
+    }
+
     public function getPhotos(string $name, ?int $limit = null): array
     {
         $query = $this->tq->getBuilder();
diff --git a/lib/ClustersBackend/PlacesBackend.php b/lib/ClustersBackend/PlacesBackend.php
index 11ae221e..167c891e 100644
--- a/lib/ClustersBackend/PlacesBackend.php
+++ b/lib/ClustersBackend/PlacesBackend.php
@@ -38,11 +38,16 @@ class PlacesBackend extends Backend
         $this->request = $request;
     }
 
-    public function appName(): string
+    public static function appName(): string
     {
         return 'Places';
     }
 
+    public static function clusterType(): string
+    {
+        return 'places';
+    }
+
     public function isEnabled(): bool
     {
         return Util::placesGISType() > 0;
@@ -92,6 +97,11 @@ class PlacesBackend extends Backend
         return $places;
     }
 
+    public static function getClusterId(array $cluster)
+    {
+        return $cluster['osm_id'];
+    }
+
     public function getPhotos(string $name, ?int $limit = null): array
     {
         $query = $this->tq->getBuilder();
diff --git a/lib/ClustersBackend/RecognizeBackend.php b/lib/ClustersBackend/RecognizeBackend.php
index 3d59398b..e00549ed 100644
--- a/lib/ClustersBackend/RecognizeBackend.php
+++ b/lib/ClustersBackend/RecognizeBackend.php
@@ -40,11 +40,16 @@ class RecognizeBackend extends Backend
         $this->request = $request;
     }
 
-    public function appName(): string
+    public static function appName(): string
     {
         return 'Recognize';
     }
 
+    public static function clusterType(): string
+    {
+        return 'recognize';
+    }
+
     public function isEnabled(): bool
     {
         return Util::recognizeIsEnabled();
@@ -162,6 +167,11 @@ class RecognizeBackend extends Backend
         return $faces;
     }
 
+    public static function getClusterId(array $cluster)
+    {
+        return $cluster['id'];
+    }
+
     public function getPhotos(string $name, ?int $limit = null): array
     {
         $query = $this->tq->getBuilder();
diff --git a/lib/ClustersBackend/TagsBackend.php b/lib/ClustersBackend/TagsBackend.php
index e305937b..c1db033d 100644
--- a/lib/ClustersBackend/TagsBackend.php
+++ b/lib/ClustersBackend/TagsBackend.php
@@ -39,11 +39,16 @@ class TagsBackend extends Backend
         $this->request = $request;
     }
 
-    public function appName(): string
+    public static function appName(): string
     {
         return 'Tags';
     }
 
+    public static function clusterType(): string
+    {
+        return 'tags';
+    }
+
     public function isEnabled(): bool
     {
         return Util::tagsIsEnabled();
@@ -101,6 +106,11 @@ class TagsBackend extends Backend
         return $tags;
     }
 
+    public static function getClusterId(array $cluster)
+    {
+        return $cluster['name'];
+    }
+
     public function getPhotos(string $name, ?int $limit = null): array
     {
         $query = $this->tq->getBuilder();
diff --git a/lib/Controller/ClustersController.php b/lib/Controller/ClustersController.php
index cb6f6592..b3dd6a2d 100644
--- a/lib/Controller/ClustersController.php
+++ b/lib/Controller/ClustersController.php
@@ -47,6 +47,12 @@ class ClustersController extends GenericApiController
 
             $list = $this->backend->getClusters();
 
+            // Set cluster_id and cluster_type for each cluster
+            foreach ($list as &$cluster) {
+                $cluster['cluster_id'] = $this->backend->getClusterId($cluster);
+                $cluster['cluster_type'] = $this->backend->clusterType();
+            }
+
             return new JSONResponse($list, Http::STATUS_OK);
         });
     }