diff --git a/apps/files/lib/Command/Mount/ListMounts.php b/apps/files/lib/Command/Mount/ListMounts.php
index b4abeac5ab8..487e769ad2c 100644
--- a/apps/files/lib/Command/Mount/ListMounts.php
+++ b/apps/files/lib/Command/Mount/ListMounts.php
@@ -8,17 +8,18 @@ declare(strict_types=1);
 
 namespace OCA\Files\Command\Mount;
 
+use OC\Core\Command\Base;
 use OCP\Files\Config\ICachedMountInfo;
 use OCP\Files\Config\IMountProviderCollection;
 use OCP\Files\Config\IUserMountCache;
 use OCP\Files\Mount\IMountPoint;
 use OCP\IUserManager;
-use Symfony\Component\Console\Command\Command;
 use Symfony\Component\Console\Input\InputArgument;
 use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Input\InputOption;
 use Symfony\Component\Console\Output\OutputInterface;
 
-class ListMounts extends Command {
+class ListMounts extends Base {
 	public function __construct(
 		private readonly IUserManager $userManager,
 		private readonly IUserMountCache $userMountCache,
@@ -28,52 +29,81 @@ class ListMounts extends Command {
 	}
 
 	protected function configure(): void {
+		parent::configure();
 		$this
 			->setName('files:mount:list')
 			->setDescription('List of mounts for a user')
-			->addArgument('user', InputArgument::REQUIRED, 'User to list mounts for');
+			->addArgument('user', InputArgument::REQUIRED, 'User to list mounts for')
+			->addOption('cached-only', null, InputOption::VALUE_NONE, 'Only return cached mounts, prevents filesystem setup');
 	}
 
 	public function execute(InputInterface $input, OutputInterface $output): int {
 		$userId = $input->getArgument('user');
+		$cachedOnly = $input->getOption('cached-only');
 		$user = $this->userManager->get($userId);
 		if (!$user) {
 			$output->writeln("<error>User $userId not found</error>");
 			return 1;
 		}
 
-		$mounts = $this->mountProviderCollection->getMountsForUser($user);
-		$mounts[] = $this->mountProviderCollection->getHomeMountForUser($user);
-		/** @var array<string, IMountPoint> $cachedByMountpoint */
-		$mountsByMountpoint = array_combine(array_map(fn (IMountPoint $mount) => $mount->getMountPoint(), $mounts), $mounts);
+		if ($cachedOnly) {
+			$mounts = [];
+		} else {
+			$mounts = $this->mountProviderCollection->getMountsForUser($user);
+			$mounts[] = $this->mountProviderCollection->getHomeMountForUser($user);
+		}
+		/** @var array<string, IMountPoint> $cachedByMountPoint */
+		$mountsByMountPoint = array_combine(array_map(fn (IMountPoint $mount) => $mount->getMountPoint(), $mounts), $mounts);
 		usort($mounts, fn (IMountPoint $a, IMountPoint $b) => $a->getMountPoint() <=> $b->getMountPoint());
 
 		$cachedMounts = $this->userMountCache->getMountsForUser($user);
 		usort($cachedMounts, fn (ICachedMountInfo $a, ICachedMountInfo $b) => $a->getMountPoint() <=> $b->getMountPoint());
 		/** @var array<string, ICachedMountInfo> $cachedByMountpoint */
-		$cachedByMountpoint = array_combine(array_map(fn (ICachedMountInfo $mount) => $mount->getMountPoint(), $cachedMounts), $cachedMounts);
+		$cachedByMountPoint = array_combine(array_map(fn (ICachedMountInfo $mount) => $mount->getMountPoint(), $cachedMounts), $cachedMounts);
 
-		foreach ($mounts as $mount) {
-			$output->writeln('<info>' . $mount->getMountPoint() . '</info>: ' . $mount->getStorageId());
-			if (isset($cachedByMountpoint[$mount->getMountPoint()])) {
-				$cached = $cachedByMountpoint[$mount->getMountPoint()];
-				$output->writeln("\t- provider: " . $cached->getMountProvider());
-				$output->writeln("\t- storage id: " . $cached->getStorageId());
-				$output->writeln("\t- root id: " . $cached->getRootId());
-			} else {
-				$output->writeln("\t<error>not registered</error>");
-			}
-		}
-		foreach ($cachedMounts as $cachedMount) {
-			if (!isset($mountsByMountpoint[$cachedMount->getMountPoint()])) {
-				$output->writeln('<info>' . $cachedMount->getMountPoint() . '</info>:');
-				$output->writeln("\t<error>registered but no longer provided</error>");
-				$output->writeln("\t- provider: " . $cachedMount->getMountProvider());
-				$output->writeln("\t- storage id: " . $cachedMount->getStorageId());
-				$output->writeln("\t- root id: " . $cachedMount->getRootId());
-			}
-		}
+		$format = $input->getOption('output');
 
+		if ($format === self::OUTPUT_FORMAT_PLAIN) {
+			foreach ($mounts as $mount) {
+				$output->writeln('<info>' . $mount->getMountPoint() . '</info>: ' . $mount->getStorageId());
+				if (isset($cachedByMountPoint[$mount->getMountPoint()])) {
+					$cached = $cachedByMountPoint[$mount->getMountPoint()];
+					$output->writeln("\t- provider: " . $cached->getMountProvider());
+					$output->writeln("\t- storage id: " . $cached->getStorageId());
+					$output->writeln("\t- root id: " . $cached->getRootId());
+				} else {
+					$output->writeln("\t<error>not registered</error>");
+				}
+			}
+			foreach ($cachedMounts as $cachedMount) {
+				if ($cachedOnly || !isset($mountsByMountPoint[$cachedMount->getMountPoint()])) {
+					$output->writeln('<info>' . $cachedMount->getMountPoint() . '</info>:');
+					if (!$cachedOnly) {
+						$output->writeln("\t<error>registered but no longer provided</error>");
+					}
+					$output->writeln("\t- provider: " . $cachedMount->getMountProvider());
+					$output->writeln("\t- storage id: " . $cachedMount->getStorageId());
+					$output->writeln("\t- root id: " . $cachedMount->getRootId());
+				}
+			}
+		} else {
+			$cached = array_map(fn (ICachedMountInfo $cachedMountInfo) => [
+				'mountpoint' => $cachedMountInfo->getMountPoint(),
+				'provider' => $cachedMountInfo->getMountProvider(),
+				'storage_id' => $cachedMountInfo->getStorageId(),
+				'root_id' => $cachedMountInfo->getRootId(),
+			], $cachedMounts);
+			$provided = array_map(fn (IMountPoint $cachedMountInfo) => [
+				'mountpoint' => $cachedMountInfo->getMountPoint(),
+				'provider' => $cachedMountInfo->getMountProvider(),
+				'storage_id' => $cachedMountInfo->getStorageId(),
+				'root_id' => $cachedMountInfo->getStorageRootId(),
+			], $mounts);
+			$this->writeArrayInOutputFormat($input, $output, array_filter([
+				'cached' => $cached,
+				'provided' => $cachedOnly ? null : $provided,
+			]));
+		}
 		return 0;
 	}