diff --git a/appinfo/info.xml b/appinfo/info.xml
index 8b3e63f2..d8948710 100644
--- a/appinfo/info.xml
+++ b/appinfo/info.xml
@@ -9,7 +9,7 @@
 	<name>Recommendations</name>
 	<summary>Shows recommended files</summary>
 	<description>Shows recommended files for quick access of files and folders with recent activity</description>
-	<version>5.0.0-dev.0</version>
+	<version>5.0.0-dev.1</version>
 	<licence>agpl</licence>
 	<author>Christoph Wurst</author>
 	<author>Jan-Christoph Borchardt</author>
@@ -19,7 +19,19 @@
 	<dependencies>
 		<nextcloud min-version="32" max-version="32" />
 	</dependencies>
+	<types>
+		<filesystem/>
+		<dav/>
+	</types>
 	<commands>
 		<command>OCA\Recommendations\Command\GetRecommendations</command>
 	</commands>
+	<sabre>
+		<collections>
+			<collection>OCA\Recommendations\Sabre\RootCollection</collection>
+		</collections>
+		<plugins>
+			<plugin>OCA\Recommendations\Sabre\PropFindPlugin</plugin>
+		</plugins>
+	</sabre>
 </info>
diff --git a/lib/AppInfo/Application.php b/lib/AppInfo/Application.php
index 909dd4c8..16bd7c98 100644
--- a/lib/AppInfo/Application.php
+++ b/lib/AppInfo/Application.php
@@ -9,6 +9,7 @@
 
 namespace OCA\Recommendations\AppInfo;
 
+use OCA\DAV\Connector\Sabre\Principal;
 use OCA\Files\Event\LoadAdditionalScriptsEvent;
 use OCA\Recommendations\Capabilities;
 use OCA\Recommendations\Dashboard\RecommendationWidget;
@@ -29,6 +30,7 @@ public function register(IRegistrationContext $context): void {
 		$context->registerEventListener(LoadAdditionalScriptsEvent::class, FilesLoadAdditionalScriptsListener::class);
 		$context->registerDashboardWidget(RecommendationWidget::class);
 		$context->registerCapability(Capabilities::class);
+		$context->registerServiceAlias('principalBackend', Principal::class);
 	}
 
 	public function boot(IBootContext $context): void {
diff --git a/lib/Command/GetRecommendations.php b/lib/Command/GetRecommendations.php
index 2ab7523e..5bc17b5d 100644
--- a/lib/Command/GetRecommendations.php
+++ b/lib/Command/GetRecommendations.php
@@ -49,12 +49,12 @@ public function execute(InputInterface $input, OutputInterface $output) {
 		);
 
 		if (is_null($user)) {
-			$output->writeln("user does not exist");
+			$output->writeln('user does not exist');
 			return 1;
 		}
 
 		if ($input->getArgument('max')) {
-			$recommendations = $this->recommendationService->getRecommendations($user, (int) $input->getArgument('max'));
+			$recommendations = $this->recommendationService->getRecommendations($user, (int)$input->getArgument('max'));
 		} else {
 			$recommendations = $this->recommendationService->getRecommendations($user);
 		}
diff --git a/lib/Controller/RecommendationController.php b/lib/Controller/RecommendationController.php
index 3d23701e..0aef9969 100644
--- a/lib/Controller/RecommendationController.php
+++ b/lib/Controller/RecommendationController.php
@@ -50,7 +50,7 @@ public function __construct(IRequest $request,
 	public function index(): DataResponse {
 		$user = $this->userSession->getUser();
 		if (is_null($user)) {
-			throw new Exception("Not logged in");
+			throw new Exception('Not logged in');
 		}
 		$response = [];
 		$response['enabled'] = $this->config->getUserValue($user->getUID(), Application::APP_ID, 'enabled', 'true') === 'true';
@@ -73,7 +73,7 @@ public function index(): DataResponse {
 	public function always(): DataResponse {
 		$user = $this->userSession->getUser();
 		if (is_null($user)) {
-			throw new Exception("Not logged in");
+			throw new Exception('Not logged in');
 		}
 		$response = [
 			'enabled' => $this->config->getUserValue($user->getUID(), Application::APP_ID, 'enabled', 'true') === 'true',
diff --git a/lib/Controller/SettingsController.php b/lib/Controller/SettingsController.php
index ad9836fb..b1e6837d 100644
--- a/lib/Controller/SettingsController.php
+++ b/lib/Controller/SettingsController.php
@@ -40,7 +40,7 @@ public function __construct($appName,
 	public function getSettings(): JSONResponse {
 		$user = $this->userSession->getUser();
 		if (!$user instanceof IUser) {
-			throw new Exception("Not logged in");
+			throw new Exception('Not logged in');
 		}
 		return new JSONResponse([
 			'enabled' => $this->config->getUserValue($user->getUID(), Application::APP_ID, 'enabled', 'true') === 'true',
@@ -55,7 +55,7 @@ public function getSettings(): JSONResponse {
 	public function setSetting(string $key, string $value): JSONResponse {
 		$user = $this->userSession->getUser();
 		if (!$user instanceof IUser) {
-			throw new Exception("Not logged in");
+			throw new Exception('Not logged in');
 		}
 		$availableSettings = ['enabled'];
 		if (!in_array($key, $availableSettings)) {
diff --git a/lib/Dashboard/RecommendationWidget.php b/lib/Dashboard/RecommendationWidget.php
index 3d0de16c..9575d4dd 100644
--- a/lib/Dashboard/RecommendationWidget.php
+++ b/lib/Dashboard/RecommendationWidget.php
@@ -37,7 +37,7 @@ public function __construct(
 		IURLGenerator $urlGenerator,
 		IMimeTypeDetector $mimeTypeDetector,
 		RecommendationService $recommendationService,
-		IUserManager $userManager
+		IUserManager $userManager,
 	) {
 		$this->userSession = $userSession;
 		$this->l10n = $l10n;
diff --git a/lib/ResponseDefinitions.php b/lib/ResponseDefinitions.php
index b240498c..140bda83 100644
--- a/lib/ResponseDefinitions.php
+++ b/lib/ResponseDefinitions.php
@@ -17,6 +17,7 @@
  *     mimeType: string,
  *     hasPreview: bool,
  *     reason: string,
+ *     reasonLabel: string,
  * }
  *
  * @psalm-suppress UnusedClass
diff --git a/lib/Sabre/IRecommendationNode.php b/lib/Sabre/IRecommendationNode.php
new file mode 100644
index 00000000..5f6fbd81
--- /dev/null
+++ b/lib/Sabre/IRecommendationNode.php
@@ -0,0 +1,14 @@
+<?php
+
+declare(strict_types=1);
+/**
+ * SPDX-FileCopyrightText: 2025 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace OCA\Recommendations\Sabre;
+
+interface IRecommendationNode {
+	public function getRecommendationReason(): string;
+	public function getRecommendationReasonLabel(): string;
+}
diff --git a/lib/Sabre/PropFindPlugin.php b/lib/Sabre/PropFindPlugin.php
new file mode 100644
index 00000000..e521d503
--- /dev/null
+++ b/lib/Sabre/PropFindPlugin.php
@@ -0,0 +1,51 @@
+<?php
+
+declare(strict_types=1);
+/**
+ * SPDX-FileCopyrightText: 2025 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace OCA\Recommendations\Sabre;
+
+use OCP\Files\Folder;
+use Sabre\DAV\INode;
+use Sabre\DAV\PropFind;
+use Sabre\DAV\Server;
+use Sabre\DAV\ServerPlugin;
+
+class PropFindPlugin extends ServerPlugin {
+	private ?Folder $userFolder = null;
+
+	public const RECOMMENDATION_REASON = '{http://nextcloud.org/ns}recommendation-reason';
+	public const RECOMMENDATION_REASON_LABEL = '{http://nextcloud.org/ns}recommendation-reason-label';
+	public const RECOMMENDATION_ORIGINAL_LOCATION = '{http://nextcloud.org/ns}recommendation-original-location';
+
+	public function getPluginName(): string {
+		return 'recommendationsPropFindPlugin';
+	}
+
+	public function initialize(Server $server): void {
+		$server->on('propFind', $this->propFind(...));
+	}
+
+	public function propFind(PropFind $propFind, INode $node): void {
+		if ($node instanceof RecommendationDirectory || $node instanceof RecommendationFile) {
+			$propFind->handle(
+				self::RECOMMENDATION_REASON,
+				/** @psalm-suppress PossiblyNullReference Null already checked above */
+				fn () => $node->getRecommendationReason(),
+			);
+			$propFind->handle(
+				self::RECOMMENDATION_REASON_LABEL,
+				/** @psalm-suppress PossiblyNullReference Null already checked above */
+				fn () => $node->getRecommendationReasonLabel(),
+			);
+			$propFind->handle(
+				self::RECOMMENDATION_ORIGINAL_LOCATION,
+				/** @psalm-suppress PossiblyNullReference Null already checked above */
+				fn () => $node->getPath(),
+			);
+		}
+	}
+}
diff --git a/lib/Sabre/RecommendationDirectory.php b/lib/Sabre/RecommendationDirectory.php
new file mode 100644
index 00000000..6ca5f687
--- /dev/null
+++ b/lib/Sabre/RecommendationDirectory.php
@@ -0,0 +1,37 @@
+<?php
+
+declare(strict_types=1);
+/**
+ * SPDX-FileCopyrightText: 2025 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace OCA\Recommendations\Sabre;
+
+use OC\Files\View;
+use OCA\DAV\Connector\Sabre\CachingTree;
+use OCA\DAV\Connector\Sabre\Directory;
+use OCP\Files\FileInfo;
+use OCP\Share\IManager;
+
+class RecommendationDirectory extends Directory implements IRecommendationNode {
+	public function __construct(
+		private string $recommendationReason,
+		private string $recommendationReasonLabel,
+		View $view,
+		FileInfo $info,
+		?CachingTree $tree = null,
+		?IManager $shareManager = null,
+	) {
+		parent::__construct($view, $info, $tree, $shareManager);
+	}
+
+
+	public function getRecommendationReason(): string {
+		return $this->recommendationReason;
+	}
+
+	public function getRecommendationReasonLabel(): string {
+		return $this->recommendationReasonLabel;
+	}
+}
diff --git a/lib/Sabre/RecommendationFile.php b/lib/Sabre/RecommendationFile.php
new file mode 100644
index 00000000..8e5f50f6
--- /dev/null
+++ b/lib/Sabre/RecommendationFile.php
@@ -0,0 +1,38 @@
+<?php
+
+declare(strict_types=1);
+/**
+ * SPDX-FileCopyrightText: 2025 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace OCA\Recommendations\Sabre;
+
+use OC\Files\View;
+use OCA\DAV\Connector\Sabre\File;
+use OCP\Files\FileInfo;
+use OCP\IL10N;
+use OCP\IRequest;
+use OCP\Share\IManager;
+
+class RecommendationFile extends File implements IRecommendationNode {
+	public function __construct(
+		private string $recommendationReason,
+		private string $recommendationReasonLabel,
+		View $view,
+		FileInfo $info,
+		?IManager $shareManager = null,
+		?IRequest $request = null,
+		?IL10N $l10n = null,
+	) {
+		parent::__construct($view, $info, $shareManager, $request, $l10n);
+	}
+
+	public function getRecommendationReason(): string {
+		return $this->recommendationReason;
+	}
+
+	public function getRecommendationReasonLabel(): string {
+		return $this->recommendationReasonLabel;
+	}
+}
diff --git a/lib/Sabre/RecommendationsHome.php b/lib/Sabre/RecommendationsHome.php
new file mode 100644
index 00000000..59022f5c
--- /dev/null
+++ b/lib/Sabre/RecommendationsHome.php
@@ -0,0 +1,132 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * SPDX-FileCopyrightText: 2025 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+namespace OCA\Recommendations\Sabre;
+
+use OC\Files\Filesystem;
+use OC\Files\View;
+use OCA\Recommendations\AppInfo\Application;
+use OCA\Recommendations\Service\IRecommendation;
+use OCA\Recommendations\Service\RecommendationService;
+use OCP\Files\FileInfo;
+use OCP\IConfig;
+use OCP\IL10N;
+use OCP\IRequest;
+use OCP\IUser;
+use OCP\Share\IManager;
+use Sabre\DAV\Exception\Forbidden;
+use Sabre\DAV\Exception\NotFound;
+use Sabre\DAV\ICollection;
+
+class RecommendationsHome implements ICollection {
+
+	/** @var ?list<IRecommendation> */
+	private ?array $cachedRecommendations = null;
+
+	private View $fileView;
+
+	public function __construct(
+		private array $principalInfo,
+		private IUser $user,
+		private IConfig $config,
+		private RecommendationService $recommendationService,
+		private IManager $shareManager,
+		private IRequest $request,
+		private IL10N $l10n,
+	) {
+		$this->fileView = Filesystem::getView();
+	}
+
+	public function delete() {
+		throw new Forbidden();
+	}
+
+	public function getName(): string {
+		[, $name] = \Sabre\Uri\split($this->principalInfo['uri']);
+		return $name;
+	}
+
+	public function setName($name) {
+		throw new Forbidden();
+	}
+
+	public function createFile($name, $data = null) {
+		throw new Forbidden();
+	}
+
+	public function createDirectory($name) {
+		throw new Forbidden();
+	}
+
+	public function getChild($name) {
+		if (!$this->isEnabled()) {
+			throw new NotFound('Recommendations are disabled');
+		}
+
+		$recommendations = $this->getChildren();
+		foreach ($recommendations as $child) {
+			if ($child->getName() === $name) {
+				return $child;
+			}
+		}
+
+		throw new NotFound("Child '$name' not found in recommendations");
+	}
+
+	public function getChildren(): array {
+		if (!$this->isEnabled()) {
+			return [];
+		}
+
+		if ($this->cachedRecommendations === null) {
+			$this->cachedRecommendations = $this->recommendationService->getRecommendations($this->user);
+		}
+
+		return array_map(
+			function (IRecommendation $recommendation) {
+				$fileInfo = $recommendation->getNode()->getFileInfo();
+				if ($recommendation->getNode()->getType() === FileInfo::TYPE_FOLDER) {
+					return new RecommendationDirectory(
+						$recommendation->getReason(),
+						$recommendation->getReasonLabel(),
+						$this->fileView,
+						$fileInfo,
+						null,
+						$this->shareManager,
+					);
+				}
+				return new RecommendationFile(
+					$recommendation->getReason(),
+					$recommendation->getReasonLabel(),
+					$this->fileView,
+					$fileInfo,
+					$this->shareManager,
+					$this->request,
+					$this->l10n
+				);
+			},
+			$this->cachedRecommendations
+		);
+	}
+
+	public function childExists($name): bool {
+		if (!$this->isEnabled()) {
+			return false;
+		}
+		// TODO: map the recommendations to a Sabre node type
+		return true;
+	}
+
+	public function getLastModified(): int {
+		return 0;
+	}
+
+	private function isEnabled(): bool {
+		return $this->config->getUserValue($this->user->getUID(), Application::APP_ID, 'enabled', 'true') === 'true';
+	}
+}
diff --git a/lib/Sabre/RootCollection.php b/lib/Sabre/RootCollection.php
new file mode 100644
index 00000000..031533fa
--- /dev/null
+++ b/lib/Sabre/RootCollection.php
@@ -0,0 +1,67 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * SPDX-FileCopyrightText: 2025 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+namespace OCA\Recommendations\Sabre;
+
+use OCA\Recommendations\AppInfo\Application;
+use OCA\Recommendations\Service\RecommendationService;
+use OCP\IConfig;
+use OCP\IL10N;
+use OCP\IRequest;
+use OCP\IUserSession;
+use OCP\Share\IManager;
+use Sabre\DAV\Exception\Forbidden;
+use Sabre\DAV\INode;
+use Sabre\DAVACL\AbstractPrincipalCollection;
+use Sabre\DAVACL\PrincipalBackend;
+
+class RootCollection extends AbstractPrincipalCollection {
+	public function __construct(
+		PrincipalBackend\BackendInterface $principalBackend,
+		private IConfig $config,
+		private RecommendationService $recommendationService,
+		private IUserSession $userSession,
+		private IManager $shareManager,
+		private IRequest $request,
+		private IL10N $l10n,
+	) {
+		parent::__construct($principalBackend, 'principals/users');
+		$this->disableListing = !$config->getSystemValue('debug', false);
+	}
+
+	/**
+	 * This method returns a node for a principal.
+	 *
+	 * The passed array contains principal information, and is guaranteed to
+	 * at least contain a uri item. Other properties may or may not be
+	 * supplied by the authentication backend.
+	 *
+	 * @param array $principalInfo
+	 * @return INode
+	 */
+	public function getChildForPrincipal(array $principalInfo): RecommendationsHome {
+		[, $name] = \Sabre\Uri\split($principalInfo['uri']);
+		$user = $this->userSession->getUser();
+		if (is_null($user) || $name !== $user->getUID()) {
+			throw new Forbidden();
+		}
+		return new RecommendationsHome(
+			$principalInfo,
+			$user,
+			$this->config,
+			$this->recommendationService,
+			$this->shareManager,
+			$this->request,
+			$this->l10n,
+		);
+	}
+
+	public function getName(): string {
+		return Application::APP_ID;
+	}
+}
diff --git a/lib/Service/IRecommendation.php b/lib/Service/IRecommendation.php
index 080fd600..491ddea8 100644
--- a/lib/Service/IRecommendation.php
+++ b/lib/Service/IRecommendation.php
@@ -24,4 +24,6 @@ public function hasPreview(): bool;
 	public function setHasPreview(bool $state);
 
 	public function getReason(): string;
+
+	public function getReasonLabel(): string;
 }
diff --git a/lib/Service/RecentlyCommentedFilesSource.php b/lib/Service/RecentlyCommentedFilesSource.php
index 9f912d1b..75ad049e 100644
--- a/lib/Service/RecentlyCommentedFilesSource.php
+++ b/lib/Service/RecentlyCommentedFilesSource.php
@@ -1,4 +1,5 @@
 <?php
+
 /**
  * SPDX-FileCopyrightText: 2018 Nextcloud GmbH and Nextcloud contributors
  * SPDX-License-Identifier: AGPL-3.0-or-later
@@ -139,6 +140,7 @@ public function getMostRecentRecommendation(IUser $user, int $max): array {
 				$file->getNode(),
 				$file->getComment()->getCreationDateTime()->getTimestamp(),
 				self::REASON,
+				$this->l10n->t('Recently commented')
 			);
 		}, $this->getNMostRecentlyCommenedFiles($all, $max));
 	}
diff --git a/lib/Service/RecentlyEditedFilesSource.php b/lib/Service/RecentlyEditedFilesSource.php
index 71afae05..9a3dc140 100644
--- a/lib/Service/RecentlyEditedFilesSource.php
+++ b/lib/Service/RecentlyEditedFilesSource.php
@@ -48,6 +48,7 @@ public function getMostRecentRecommendation(IUser $user, int $max): array {
 					$node,
 					$node->getMTime(),
 					self::REASON,
+					$this->l10n->t('Recently edited'),
 				);
 			} catch (StorageNotAvailableException $e) {
 				return null;
diff --git a/lib/Service/RecentlySharedFilesSource.php b/lib/Service/RecentlySharedFilesSource.php
index 2b9aa1b5..0b4d72b6 100644
--- a/lib/Service/RecentlySharedFilesSource.php
+++ b/lib/Service/RecentlySharedFilesSource.php
@@ -99,11 +99,13 @@ public function getMostRecentRecommendation(IUser $user, int $max): array {
 
 		return array_filter(array_map(function (IShare $share) use ($userFolder): ?RecommendedFile {
 			try {
+				$node = $userFolder->get($share->getTarget());
 				return new RecommendedFile(
-					$userFolder->getRelativePath($userFolder->get($share->getTarget())->getParent()->getPath()),
-					$share->getNode(),
+					$userFolder->getRelativePath($node->getParent()->getPath()),
+					$node,
 					$share->getShareTime()->getTimestamp(),
 					self::REASON,
+					$this->l10n->t('Recently shared'),
 				);
 			} catch (NotFoundException $ex) {
 				return null;
diff --git a/lib/Service/RecommendedFile.php b/lib/Service/RecommendedFile.php
index c8c3d30b..2bd32806 100644
--- a/lib/Service/RecommendedFile.php
+++ b/lib/Service/RecommendedFile.php
@@ -16,21 +16,14 @@
  * @psalm-import-type RecommendationsRecommendedFile from ResponseDefinitions
  */
 class RecommendedFile implements IRecommendation {
-	private string $directory;
-	private Node $node;
-	private int $timestamp;
-	private string $reason;
-	private bool $hasPreview;
-
-	public function __construct(string $directory,
-		Node $node,
-		int $timestamp,
-		string $reason) {
-		$this->directory = $directory;
-		$this->node = $node;
-		$this->reason = $reason;
-		$this->timestamp = $timestamp;
-		$this->hasPreview = false;
+	public function __construct(
+		private string $directory,
+		private Node $node,
+		private int $timestamp,
+		private string $reason,
+		private string $reasonLabel,
+		private bool $hasPreview = false,
+	) {
 	}
 
 	public function getId(): string {
@@ -61,6 +54,10 @@ public function setHasPreview(bool $state) {
 		$this->hasPreview = $state;
 	}
 
+	public function getReasonLabel(): string {
+		return $this->reasonLabel;
+	}
+
 	/**
 	 * @return RecommendationsRecommendedFile
 	 */
@@ -75,6 +72,7 @@ public function jsonSerialize() {
 			'mimeType' => $this->node->getMimetype(),
 			'hasPreview' => $this->hasPreview(),
 			'reason' => $this->getReason(),
+			'reasonLabel' => $this->getReasonLabel(),
 		];
 	}
 }
diff --git a/openapi.json b/openapi.json
index c72e5f6c..ea0a485c 100644
--- a/openapi.json
+++ b/openapi.json
@@ -70,7 +70,8 @@
                     "extension",
                     "mimeType",
                     "hasPreview",
-                    "reason"
+                    "reason",
+                    "reasonLabel"
                 ],
                 "properties": {
                     "id": {
@@ -97,6 +98,9 @@
                     },
                     "reason": {
                         "type": "string"
+                    },
+                    "reasonLabel": {
+                        "type": "string"
                     }
                 }
             }