diff --git a/.github/workflows/integration-sqlite.yml b/.github/workflows/integration-sqlite.yml
index 8fbea470911..0ec7e452a74 100644
--- a/.github/workflows/integration-sqlite.yml
+++ b/.github/workflows/integration-sqlite.yml
@@ -62,6 +62,7 @@ jobs:
           - '--tags ~@large files_features'
           - 'filesdrop_features'
           - 'file_conversions'
+          - 'files_reminders'
           - 'openldap_features'
           - 'openldap_numerical_features'
           - 'ldap_features'
diff --git a/build/integration/config/behat.yml b/build/integration/config/behat.yml
index 0a3fe4fd823..9d06553ba38 100644
--- a/build/integration/config/behat.yml
+++ b/build/integration/config/behat.yml
@@ -131,6 +131,16 @@ default:
               - admin
               - admin
             regular_user_password: 123456
+    files_reminders:
+      paths:
+        - "%paths.base%/../files_reminders"
+      contexts:
+        - FilesRemindersContext:
+            baseUrl: http://localhost:8080
+            admin:
+              - admin
+              - admin
+            regular_user_password: 123456
     capabilities:
       paths:
         - "%paths.base%/../capabilities_features"
diff --git a/build/integration/features/bootstrap/BasicStructure.php b/build/integration/features/bootstrap/BasicStructure.php
index 59a4312913e..e6ba54a7212 100644
--- a/build/integration/features/bootstrap/BasicStructure.php
+++ b/build/integration/features/bootstrap/BasicStructure.php
@@ -116,18 +116,27 @@ trait BasicStructure {
 	}
 
 	/**
-	 * Parses the xml answer to get ocs response which doesn't match with
+	 * Parses the xml or json answer to get ocs response which doesn't match with
 	 * http one in v1 of the api.
 	 *
 	 * @param ResponseInterface $response
 	 * @return string
 	 */
-	public function getOCSResponse($response) {
-		$body = simplexml_load_string((string)$response->getBody());
-		if ($body === false) {
-			throw new \RuntimeException('Could not parse OCS response, body is not valid XML');
+	public function getOCSResponseCode($response): int {
+		if ($response === null) {
+			throw new \RuntimeException('No response available');
 		}
-		return $body->meta[0]->statuscode;
+
+		$body = (string)$response->getBody();
+		if (str_starts_with($body, '<')) {
+			$body = simplexml_load_string($body);
+			if ($body === false) {
+				throw new \RuntimeException('Could not parse OCS response, body is not valid XML');
+			}
+			return (int)$body->meta[0]->statuscode;
+		}
+
+		return json_decode($body, true)['ocs']['meta']['statuscode'];
 	}
 
 	/**
@@ -257,7 +266,7 @@ trait BasicStructure {
 	 * @param int $statusCode
 	 */
 	public function theOCSStatusCodeShouldBe($statusCode) {
-		Assert::assertEquals($statusCode, $this->getOCSResponse($this->response));
+		Assert::assertEquals($statusCode, $this->getOCSResponseCode($this->response));
 	}
 
 	/**
diff --git a/build/integration/features/bootstrap/FilesRemindersContext.php b/build/integration/features/bootstrap/FilesRemindersContext.php
new file mode 100644
index 00000000000..13adfaf5f83
--- /dev/null
+++ b/build/integration/features/bootstrap/FilesRemindersContext.php
@@ -0,0 +1,96 @@
+<?php
+
+/**
+ * SPDX-FileCopyrightText: 2025 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+use Behat\Behat\Context\Context;
+use PHPUnit\Framework\Assert;
+
+require __DIR__ . '/../../vendor/autoload.php';
+
+
+/**
+ * Files reminders context.
+ */
+class FilesRemindersContext implements Context {
+	use BasicStructure;
+	use WebDav;
+
+	/**
+	 * @When the user sets a reminder for :path with due date :dueDate
+	 */
+	public function settingAReminderForFileWithDueDate($path, $dueDate) {
+		$fileId = $this->getFileIdForPath($this->currentUser, $path);
+		$this->sendRequestForJSON(
+			'PUT',
+			'/apps/files_reminders/api/v1/' . $fileId,
+			['dueDate' => $dueDate],
+			['OCS-APIREQUEST' => 'true']
+		);
+	}
+
+	/**
+	 * @Then the user sees the reminder for :path is set to :dueDate
+	 */
+	public function retrievingTheReminderForFile($path, $dueDate) {
+		$fileId = $this->getFileIdForPath($this->currentUser, $path);
+		$this->sendRequestForJSON(
+			'GET',
+			'/apps/files_reminders/api/v1/' . $fileId,
+			null,
+			['OCS-APIREQUEST' => 'true']
+		);
+		$response = $this->getDueDateFromOCSResponse();
+		Assert::assertEquals($dueDate, $response);
+	}
+
+	/**
+	 * @Then the user sees the reminder for :path is not set
+	 */
+	public function retrievingTheReminderForFileIsNotSet($path) {
+		$fileId = $this->getFileIdForPath($this->currentUser, $path);
+		$this->sendRequestForJSON(
+			'GET',
+			'/apps/files_reminders/api/v1/' . $fileId,
+			null,
+			['OCS-APIREQUEST' => 'true']
+		);
+		$response = $this->getDueDateFromOCSResponse();
+		Assert::assertNull($response);
+	}
+
+	/**
+	 * @When the user removes the reminder for :path
+	 */
+	public function removingTheReminderForFile($path) {
+		$fileId = $this->getFileIdForPath($this->currentUser, $path);
+		$this->sendRequestForJSON(
+			'DELETE',
+			'/apps/files_reminders/api/v1/' . $fileId,
+			null,
+			['OCS-APIREQUEST' => 'true']
+		);
+	}
+
+	/**
+	 * Check the due date from OCS response
+	 */
+	private function getDueDateFromOCSResponse(): ?string {
+		if ($this->response === null) {
+			throw new \RuntimeException('No response available');
+		}
+
+		$body = (string)$this->response->getBody();
+		if (str_starts_with($body, '<')) {
+			$body = simplexml_load_string($body);
+			if ($body === false) {
+				throw new \RuntimeException('Could not parse OCS response, body is not valid XML');
+			}
+			return $body->data->dueDate;
+		}
+
+		$body = json_decode($body, true);
+		return $body['ocs']['data']['dueDate'] ?? null;
+	}
+}
diff --git a/build/integration/files_reminders/files_reminders.feature b/build/integration/files_reminders/files_reminders.feature
new file mode 100644
index 00000000000..b8446814418
--- /dev/null
+++ b/build/integration/files_reminders/files_reminders.feature
@@ -0,0 +1,33 @@
+# SPDX-FileCopyrightText: 2025 Nextcloud GmbH and Nextcloud contributors
+# SPDX-License-Identifier: AGPL-3.0-only
+Feature: Files reminders
+
+  Background:
+    Given using api version "2"
+
+  Scenario: Set a reminder with a past due date
+    Given user "user0" exists
+    Given As an "user0"
+    Given User "user0" uploads file "data/textfile.txt" to "/file.txt"
+    When the user sets a reminder for "/file.txt" with due date "2000-01-01T00:00:00Z"
+    Then the OCS status code should be "400"
+    Then the user sees the reminder for "/file.txt" is not set
+
+  Scenario: Set a reminder with a valid due date
+    Given user "user1" exists
+    Given As an "user1"
+    Given User "user1" uploads file "data/textfile.txt" to "/file.txt"
+    When the user sets a reminder for "/file.txt" with due date "2100-01-01T00:00:00Z"
+    Then the OCS status code should be "201"
+    Then the user sees the reminder for "/file.txt" is set to "2100-01-01T00:00:00+00:00"
+
+  Scenario: Remove a reminder
+    Given user "user2" exists
+    Given As an "user2"
+    Given User "user2" uploads file "data/textfile.txt" to "/file.txt"
+    When the user sets a reminder for "/file.txt" with due date "2100-01-01T00:00:00Z"
+    Then the OCS status code should be "201"
+    Then the user sees the reminder for "/file.txt" is set to "2100-01-01T00:00:00+00:00"
+    When the user removes the reminder for "/file.txt"
+    Then the OCS status code should be "200"
+    Then the user sees the reminder for "/file.txt" is not set