diff --git a/appinfo/routes.php b/appinfo/routes.php
index 85e2a3b..ec0fc03 100644
--- a/appinfo/routes.php
+++ b/appinfo/routes.php
@@ -13,7 +13,8 @@ declare(strict_types=1);
 return [
 	'routes' => [
 		['name' => 'page#index', 'url' => '/', 'verb' => 'GET'],
-		['name' => 'toplist#index', 'url' => '/toplist/{count}', 'verb' => 'GET'],
+		['name' => 'fetch#index', 'url' => '/fetch/{uri}', 'verb' => 'GET'],
 		['name' => 'search#index', 'url' => '/search/{value}', 'verb' => 'GET'],
+		['name' => 'toplist#index', 'url' => '/toplist/{count}', 'verb' => 'GET'],
 	],
 ];
diff --git a/composer.json b/composer.json
index 1391d21..90c989f 100644
--- a/composer.json
+++ b/composer.json
@@ -5,7 +5,7 @@
 	"license": "AGPL-3.0-or-later",
 	"require-dev": {
 		"nextcloud/ocp": "^27.0.2",
-		"psalm/phar": "^5.14.1",
+		"psalm/phar": "^5.15.0",
 		"nextcloud/coding-standard": "^1.1.1"
 	},
 	"scripts": {
diff --git a/composer.lock b/composer.lock
index cb655c6..7309866 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "3fa8e5aac39e7c385a793eff9a78e763",
+    "content-hash": "c0c30dda23dd29e41502385edf3227da",
     "packages": [],
     "packages-dev": [
         {
@@ -94,16 +94,16 @@
         },
         {
             "name": "php-cs-fixer/shim",
-            "version": "v3.22.0",
+            "version": "v3.23.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/PHP-CS-Fixer/shim.git",
-                "reference": "f6692934a6d1fe40fd8bc3339487490baa4a6700"
+                "reference": "ddca9b342374087121e44cca3b7d8aca8f121fa7"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/PHP-CS-Fixer/shim/zipball/f6692934a6d1fe40fd8bc3339487490baa4a6700",
-                "reference": "f6692934a6d1fe40fd8bc3339487490baa4a6700",
+                "url": "https://api.github.com/repos/PHP-CS-Fixer/shim/zipball/ddca9b342374087121e44cca3b7d8aca8f121fa7",
+                "reference": "ddca9b342374087121e44cca3b7d8aca8f121fa7",
                 "shasum": ""
             },
             "require": {
@@ -140,9 +140,9 @@
             "description": "A tool to automatically fix PHP code style",
             "support": {
                 "issues": "https://github.com/PHP-CS-Fixer/shim/issues",
-                "source": "https://github.com/PHP-CS-Fixer/shim/tree/v3.22.0"
+                "source": "https://github.com/PHP-CS-Fixer/shim/tree/v3.23.0"
             },
-            "time": "2023-07-16T23:08:49+00:00"
+            "time": "2023-08-14T12:28:46+00:00"
         },
         {
             "name": "psalm/phar",
diff --git a/lib/Controller/FetchController.php b/lib/Controller/FetchController.php
new file mode 100644
index 0000000..2a06b47
--- /dev/null
+++ b/lib/Controller/FetchController.php
@@ -0,0 +1,47 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OCA\RePod\Controller;
+
+use OCA\GPodderSync\Core\PodcastData\PodcastData;
+use OCA\GPodderSync\Core\PodcastData\PodcastDataReader;
+use OCA\RePod\AppInfo\Application;
+use OCA\RePod\Service\UserService;
+use OCP\AppFramework\Controller;
+use OCP\AppFramework\Http\JSONResponse;
+use OCP\Http\Client\IClientService;
+use OCP\IRequest;
+
+class FetchController extends Controller
+{
+	public function __construct(
+		IRequest $request,
+		private IClientService $clientService,
+		private UserService $userService,
+		private PodcastDataReader $podcastDataReader
+	) {
+		parent::__construct(Application::APP_ID, $request);
+	}
+
+	public function index(string $uri): JSONResponse
+	{
+		$podcastData = $this->podcastDataReader->getCachedOrFetchPodcastData($uri, $this->userService->getUserUID());
+
+		if ($podcastData) {
+			return new JSONResponse($podcastData->toArray());
+		}
+
+		$client = $this->clientService->newClient();
+		$feed = $client->get($uri);
+		$statusCode = $feed->getStatusCode();
+
+		if ($statusCode < 200 || $statusCode >= 300) {
+			throw new \ErrorException("Web request returned non-2xx status code: {$statusCode}");
+		}
+
+		$podcastData = PodcastData::parseRssXml((string) $feed->getBody());
+
+		return new JSONResponse($podcastData->toArray());
+	}
+}
diff --git a/lib/Controller/SearchController.php b/lib/Controller/SearchController.php
index f9d91f2..4abdf68 100644
--- a/lib/Controller/SearchController.php
+++ b/lib/Controller/SearchController.php
@@ -4,6 +4,7 @@ declare(strict_types=1);
 
 namespace OCA\RePod\Controller;
 
+use OCA\GPodderSync\Core\PodcastData\PodcastData;
 use OCA\RePod\AppInfo\Application;
 use OCA\RePod\Service\FyydService;
 use OCA\RePod\Service\ItunesService;
@@ -36,8 +37,8 @@ class SearchController extends Controller
 			}
 		}
 
-		usort($podcasts, fn (array $a, array $b) => new \DateTime((string) $b['lastpub']) <=> new \DateTime((string) $a['lastpub']));
-		$podcasts = array_intersect_key($podcasts, array_unique(array_map(fn (array $feed) => $feed['url'], $podcasts)));
+		usort($podcasts, fn (PodcastData $a, PodcastData $b) => $a->getFetchedAtUnix() <=> $b->getFetchedAtUnix());
+		$podcasts = array_intersect_key($podcasts, array_unique(array_map(fn (PodcastData $feed) => $feed->getLink(), $podcasts)));
 
 		return new JSONResponse($podcasts);
 	}
diff --git a/lib/Service/FyydService.php b/lib/Service/FyydService.php
index 2feda43..cfb5050 100644
--- a/lib/Service/FyydService.php
+++ b/lib/Service/FyydService.php
@@ -4,14 +4,12 @@ declare(strict_types=1);
 
 namespace OCA\RePod\Service;
 
+use OCA\GPodderSync\Core\PodcastData\PodcastData;
 use OCP\Http\Client\IClientService;
 use OCP\IUserSession;
 use OCP\L10N\IFactory;
 use Psr\Log\LoggerInterface;
 
-/**
- * @psalm-import-type Podcast from IProvider
- */
 class FyydService implements IProvider
 {
 	private const BASE_URL = 'https://api.fyyd.de/0.2/';
@@ -42,20 +40,14 @@ class FyydService implements IProvider
 		if (array_key_exists('data', $json) && is_array($json['data'])) {
 			/** @var string[] $feed */
 			foreach ($json['data'] as $feed) {
-				$podcasts[] = [
-					'id' => $feed['id'],
-					'provider' => 'fyyd',
-					'website' => $feed['htmlURL'],
-					'description' => $feed['description'],
-					'title' => $feed['title'],
-					'author' => $feed['author'],
-					'url' => $feed['xmlURL'],
-					'position_last_week' => $feed['rank'],
-					'mygpo_link' => $feed['url_fyyd'],
-					'logo_url' => $feed['imgURL'],
-					'lastpub' => $feed['lastpub'],
-					'episode_count' => $feed['episode_count'],
-				];
+				$podcasts[] = new PodcastData(
+					$feed['title'],
+					$feed['author'],
+					$feed['xmlURL'],
+					$feed['description'],
+					$feed['imgURL'],
+					strtotime($feed['lastpub'])
+				);
 			}
 		}
 
@@ -63,7 +55,7 @@ class FyydService implements IProvider
 	}
 
 	/**
-	 * @return Podcast[]
+	 * @return PodcastData[]
 	 */
 	public function hot(int $count = 10): array
 	{
@@ -95,20 +87,14 @@ class FyydService implements IProvider
 		if (array_key_exists('data', $postCastJson) && is_array($postCastJson['data'])) {
 			/** @var string[] $feed */
 			foreach ($postCastJson['data'] as $feed) {
-				$podcasts[] = [
-					'id' => $feed['id'],
-					'provider' => 'fyyd',
-					'website' => $feed['htmlURL'],
-					'description' => $feed['description'],
-					'title' => $feed['title'],
-					'author' => $feed['author'],
-					'url' => $feed['xmlURL'],
-					'position_last_week' => $feed['rank'],
-					'mygpo_link' => $feed['url_fyyd'],
-					'logo_url' => $feed['imgURL'],
-					'lastpub' => $feed['lastpub'],
-					'episode_count' => $feed['episode_count'],
-				];
+				$podcasts[] = new PodcastData(
+					$feed['title'],
+					$feed['author'],
+					$feed['xmlURL'],
+					$feed['description'],
+					$feed['imgURL'],
+					strtotime($feed['lastpub'])
+				);
 			}
 		}
 
diff --git a/lib/Service/IProvider.php b/lib/Service/IProvider.php
index bbe5290..3476fc4 100644
--- a/lib/Service/IProvider.php
+++ b/lib/Service/IProvider.php
@@ -4,26 +4,12 @@ declare(strict_types=1);
 
 namespace OCA\RePod\Service;
 
-/**
- * @psalm-type Podcast = array{
- *  id: string,
- *  provider: string,
- *  website: string,
- *  description: string,
- *  title: string,
- *  author: string,
- *  url: string,
- *  position_last_week: ?string,
- *  mygpo_link: string,
- *  logo_url: string,
- *  lastpub: string,
- *  episode_count: string
- * }
- */
+use OCA\GPodderSync\Core\PodcastData\PodcastData;
+
 interface IProvider
 {
 	/**
-	 * @return Podcast[]
+	 * @return PodcastData[]
 	 */
 	public function search(string $value): array;
 }
diff --git a/lib/Service/ItunesService.php b/lib/Service/ItunesService.php
index b86bdd3..ad08ebc 100644
--- a/lib/Service/ItunesService.php
+++ b/lib/Service/ItunesService.php
@@ -4,6 +4,7 @@ declare(strict_types=1);
 
 namespace OCA\RePod\Service;
 
+use OCA\GPodderSync\Core\PodcastData\PodcastData;
 use OCP\Http\Client\IClientService;
 
 class ItunesService implements IProvider
@@ -33,20 +34,14 @@ class ItunesService implements IProvider
 		if (array_key_exists('results', $json) && is_array($json['results'])) {
 			/** @var string[] $feed */
 			foreach ($json['results'] as $feed) {
-				$podcasts[] = [
-					'id' => $feed['id'],
-					'provider' => 'itunes',
-					'website' => $feed['trackViewUrl'],
-					'description' => $feed['primaryGenreName'],
-					'title' => $feed['trackName'],
-					'author' => $feed['artistName'],
-					'url' => $feed['feedUrl'],
-					'position_last_week' => null,
-					'mygpo_link' => $feed['trackViewUrl'],
-					'logo_url' => $feed['artworkUrl600'],
-					'lastpub' => $feed['releaseDate'],
-					'episode_count' => $feed['trackCount'],
-				];
+				$podcasts[] = new PodcastData(
+					$feed['trackName'],
+					$feed['artistName'],
+					$feed['feedUrl'],
+					$feed['primaryGenreName'],
+					$feed['artworkUrl600'],
+					strtotime($feed['releaseDate'])
+				);
 			}
 		}
 
diff --git a/lib/Service/UserService.php b/lib/Service/UserService.php
index 4906371..5d53e05 100644
--- a/lib/Service/UserService.php
+++ b/lib/Service/UserService.php
@@ -15,6 +15,13 @@ class UserService
 	) {
 	}
 
+	public function getUserUID(): string
+	{
+		$user = $this->userSession->getUser();
+
+		return $user ? $user->getUID() : '';
+	}
+
 	public function getIsoCode(): string
 	{
 		return $this->l10n->getUserLanguage($this->userSession->getUser());
diff --git a/psalm.xml b/psalm.xml
index e55d59b..7b74fb9 100644
--- a/psalm.xml
+++ b/psalm.xml
@@ -6,7 +6,6 @@
 		findUnusedCode="false"
 		xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 		xmlns="https://getpsalm.org/schema/config"
-		xsi:schemaLocation="https://getpsalm.org/schema/config vendor/vimeo/psalm/config.xsd"
 >
 	<projectFiles>
 		<directory name="lib" />
diff --git a/stubs/OCA/GPodderSync/Core/EpisodeAction/EpisodeAction.php b/stubs/OCA/GPodderSync/Core/EpisodeAction/EpisodeAction.php
index 655dcd5..a9af0d6 100644
--- a/stubs/OCA/GPodderSync/Core/EpisodeAction/EpisodeAction.php
+++ b/stubs/OCA/GPodderSync/Core/EpisodeAction/EpisodeAction.php
@@ -19,6 +19,19 @@ namespace OCA\GPodderSync\Core\EpisodeAction;
  */
 class EpisodeAction
 {
+	public function __construct(
+		private string $podcast,
+		private string $episode,
+		private string $action,
+		private string $timestamp,
+		private int $started,
+		private int $position,
+		private int $total,
+		private ?string $guid,
+		private ?int $id
+	) {
+	}
+
 	/**
 	 * @return string
 	 */
diff --git a/stubs/OCA/GPodderSync/Core/PodcastData/PodcastData.php b/stubs/OCA/GPodderSync/Core/PodcastData/PodcastData.php
index 1bfefe2..2ab8c48 100644
--- a/stubs/OCA/GPodderSync/Core/PodcastData/PodcastData.php
+++ b/stubs/OCA/GPodderSync/Core/PodcastData/PodcastData.php
@@ -17,6 +17,17 @@ namespace OCA\GPodderSync\Core\PodcastData;
  */
 class PodcastData implements \JsonSerializable
 {
+	public function __construct(
+		private ?string $title,
+		private ?string $author,
+		private ?string $link,
+		private ?string $description,
+		private ?string $imageUrl,
+		private int $fetchedAtUnix,
+		private ?string $imageBlob = null
+	) {
+	}
+
 	/**
 	 * @return PodcastData
 	 * @throws \Exception  if the XML data could not be parsed
diff --git a/stubs/OCA/GPodderSync/Core/PodcastData/PodcastMetrics.php b/stubs/OCA/GPodderSync/Core/PodcastData/PodcastMetrics.php
index ce7e0c9..3481fed 100644
--- a/stubs/OCA/GPodderSync/Core/PodcastData/PodcastMetrics.php
+++ b/stubs/OCA/GPodderSync/Core/PodcastData/PodcastMetrics.php
@@ -13,6 +13,13 @@ namespace OCA\GPodderSync\Core\PodcastData;
  */
 class PodcastMetrics implements \JsonSerializable
 {
+	public function __construct(
+		private string $url,
+		private int $listenedSeconds = 0,
+		private ?PodcastActionCounts $actionCounts = null
+	) {
+	}
+
 	/**
 	 * @return string
 	 */
diff --git a/stubs/OCA/GPodderSync/Core/SubscriptionChange/SubscriptionChange.php b/stubs/OCA/GPodderSync/Core/SubscriptionChange/SubscriptionChange.php
index 7ef7f85..02857fc 100644
--- a/stubs/OCA/GPodderSync/Core/SubscriptionChange/SubscriptionChange.php
+++ b/stubs/OCA/GPodderSync/Core/SubscriptionChange/SubscriptionChange.php
@@ -6,6 +6,12 @@ namespace OCA\GPodderSync\Core\SubscriptionChange;
 
 class SubscriptionChange
 {
+	public function __construct(
+		private string $url,
+		private bool $isSubscribed
+	) {
+	}
+
 	/**
 	 * @return bool
 	 */
diff --git a/stubs/OCA/GPodderSync/Core/SubscriptionChange/SubscriptionChangeRequestParser.php b/stubs/OCA/GPodderSync/Core/SubscriptionChange/SubscriptionChangeRequestParser.php
index eef272f..5b83720 100644
--- a/stubs/OCA/GPodderSync/Core/SubscriptionChange/SubscriptionChangeRequestParser.php
+++ b/stubs/OCA/GPodderSync/Core/SubscriptionChange/SubscriptionChangeRequestParser.php
@@ -6,6 +6,10 @@ namespace OCA\GPodderSync\Core\SubscriptionChange;
 
 class SubscriptionChangeRequestParser
 {
+	public function __construct(private SubscriptionChangesReader $subscriptionChangeReader)
+	{
+	}
+
 	/**
 	 * @return SubscriptionChange[]
 	 */