diff --git a/appinfo/info.xml b/appinfo/info.xml
index cfc6e9eb..d84a930a 100644
--- a/appinfo/info.xml
+++ b/appinfo/info.xml
@@ -26,6 +26,9 @@
         <nextcloud min-version="15" max-version="26"/>
         <owncloud min-version="10" max-version="10"/>
     </dependencies>
+    
+    <migration class="OCA\ScienceMesh\Migration\Version0001Date202305101530" app="sciencemesh" version="1.0.0" />
+
     <settings>
         <admin>OCA\ScienceMesh\Settings</admin>
         <admin>OCA\ScienceMesh\Settings\SciencemeshSettingsAdmin</admin>
diff --git a/appinfo/routes.php b/appinfo/routes.php
index 6707021d..a11a7f45 100644
--- a/appinfo/routes.php
+++ b/appinfo/routes.php
@@ -94,8 +94,16 @@
 		["name" => "settings#get_settings", "url" => "/ajax/settings", "verb" => "GET"],
 		["name" => "settings#get_sciencemesh_settings", "url" => "/sciencemesh_settings", "verb" => "GET"],
 		["name" => "settings#save_sciencemesh_settings", "url" => "/ajax/sciencemesh_settings/save", "verb" => "GET"],
-		["name" => "settings#check_connection_settings", "url" => "/ajax/check_connection_settings", "verb" => "GET"]
-
+		["name" => "settings#check_connection_settings", "url" => "/ajax/check_connection_settings", "verb" => "GET"],
+		
+		// API Routes
+		["name" => "api#add_token", "url" => "/api/v1/add_token/{initiator}", "verb" => "POST"],
+		["name" => "api#get_token", "url" => "/api/v1/get_token", "verb" => "GET"],
+		["name" => "api#tokens_list", "url" => "/api/v1/tokens_list/{initiator}", "verb" => "GET"],
+		["name" => "api#add_remote_user", "url" => "/api/v1/add_remote_user/{initiator}", "verb" => "POST"],
+		["name" => "api#get_remote_user", "url" => "/api/v1/get_remote_user/{initiator}", "verb" => "GET"],
+		["name" => "api#find_remote_user", "url" => "/api/v1/find_remote_user/{initiator}", "verb" => "GET"]
+	
 	]
 ];
 
diff --git a/js/contacts.js b/js/contacts.js
index 1b4e3bb4..01dc328d 100644
--- a/js/contacts.js
+++ b/js/contacts.js
@@ -1,5 +1,6 @@
 document.addEventListener("DOMContentLoaded", function(event) {
     //Everything will be for working with contacts
+    loadData("");
     var baseUrl = OC.generateUrl('/apps/sciencemesh');
     $('#test_error').hide(); 
     $.ajax({
diff --git a/lib/Controller/ApiController.php b/lib/Controller/ApiController.php
new file mode 100644
index 00000000..6a382270
--- /dev/null
+++ b/lib/Controller/ApiController.php
@@ -0,0 +1,333 @@
+<?php
+
+namespace OCA\ScienceMesh\Controller;
+
+use OCP\AppFramework\Http\JSONResponse;
+use OCP\IRequest;
+use OCP\AppFramework\Controller;
+use OCP\AppFramework\Http\TemplateResponse;
+use OCP\IL10N;
+use OCP\ILogger;
+use OCP\IURLGenerator;
+use OCA\ScienceMesh\AppConfig;
+use OCA\ScienceMesh\Crypt;
+use OCA\ScienceMesh\DocumentService;
+use OCA\ScienceMesh\RevaHttpClient;
+use OCP\AppFramework\Http\DataResponse;
+use OCP\DB\QueryBuilder\IQueryBuilder;
+use OCP\IDBConnection;
+use OCP\AppFramework\Http\TextPlainResponse;
+use OCP\AppFramework\Http;
+use OCA\Sciencemesh\ServerConfig;
+use OCP\IConfig;
+
+/**
+ * Settings controller for the administration page
+ */
+class ApiController extends Controller
+{
+    private $logger;
+	private $config;
+	private $urlGenerator;
+	private $serverConfig;
+	private $sciencemeshConfig;
+	private $userId;
+	private $db;
+	const CATALOG_URL = "https://iop.sciencemesh.uni-muenster.de/iop/mentix/sitereg";
+
+	/**
+	 * @param string $AppName - application name
+	 * @param IRequest $request - request object
+	 * @param IURLGenerator $urlGenerator - url generator service
+	 * @param IL10N $trans - l10n service
+	 * @param ILogger $logger - logger
+	 * @param AppConfig $config - application configuration
+	 */
+	public function __construct(
+		$AppName,
+		IRequest $request,
+		IURLGenerator $urlGenerator,
+		IL10N $trans,
+		ILogger $logger,
+		AppConfig $config,
+		IConfig $sciencemeshConfig,
+		IDBConnection $db,
+		$userId
+	) {
+        parent::__construct($AppName, $request);
+		$this->serverConfig = new \OCA\ScienceMesh\ServerConfig($sciencemeshConfig);
+
+		$this->urlGenerator = $urlGenerator;
+		$this->logger = $logger;
+		$this->config = $config;
+		$this->sciencemeshConfig = $sciencemeshConfig;
+        $this->db = $db;
+		$this->request = $request;
+    }
+
+    /**
+     * Check if the request is authenticated by comparing the request's API key with the stored inviteManagerApikey.
+     *
+	 * 
+	 * @PublicPage
+     * @param IRequest $request
+     * @return bool
+     */
+    public function authentication($request)
+    {
+        $qb = $this->db->getQueryBuilder();
+
+        $qb->select('*')
+            ->from('appconfig')
+            ->where(
+                $qb->expr()->eq('appid', $qb->createNamedParameter('sciencemesh', IQueryBuilder::PARAM_STR))
+            )
+            ->andWhere(
+                $qb->expr()->eq('configkey', $qb->createNamedParameter('inviteManagerApikey', IQueryBuilder::PARAM_STR))
+            );
+
+        $cursor = $qb->execute();
+        $row = $cursor->fetchAll();
+
+		if ($row[0]['configvalue'] == $this->request->getHeader('apikey')) {
+            return true;
+        } else {
+            return false;
+        }
+    }
+	
+	/**
+	 * 
+	 * @PublicPage
+	 * @NoCSRFRequired
+	 */
+	public function addToken($initiator, $request){
+		if(!$this->authentication($this->request)) return new DataResponse((['message' => 'Authentication failed!','status' => 412, 'data' => null]), Http::STATUS_INTERNAL_SERVER_ERROR);
+
+		if(!$this->request->getParam('token') and !$initiator and !$this->request->getParam('expiration') and !$this->request->getParam('description')){
+			return new DataResponse(['message' => 'values are not provided properly!','status' => 412, 'data' => null], Http::STATUS_OK);
+		}
+
+		$qb = $this->db->getQueryBuilder();
+
+        $qb->select('*')
+		->from('ocm_tokens')
+		->where(
+			$qb->expr()->eq('initiator', $qb->createNamedParameter($initiator, IQueryBuilder::PARAM_STR))
+		)
+		->andWhere(
+			$qb->expr()->eq('token', $qb->createNamedParameter($this->request->getParam('token'), IQueryBuilder::PARAM_STR))
+		);
+        $cursor = $qb->execute();
+        $row = $cursor->fetchAll();
+		
+		$expiration = $this->request->getParam('expiration');
+
+		if(empty($row)){
+			$qb->insert('ocm_tokens')
+			->values(
+				array(
+					'token' => $qb->createNamedParameter($this->request->getParam('token'), IQueryBuilder::PARAM_STR),
+					'initiator' => $qb->createNamedParameter($initiator, IQueryBuilder::PARAM_STR),
+					'expiration' => $qb->createNamedParameter($expiration, IQueryBuilder::PARAM_STR),
+					'description' => $qb->createNamedParameter($this->request->getParam('description'), IQueryBuilder::PARAM_STR)
+				)
+			);
+			$cursor = $qb->execute();
+		}else{
+			$cursor = 0;
+		}
+
+		if($cursor)
+			return new DataResponse((['message' => 'Token added!','status' => 200, 'data' => $cursor]), Http::STATUS_OK);
+		else if($cursor == 0)
+			return new DataResponse((['message' => 'Token already exists!','status' => 204, 'data' => 0]), Http::STATUS_BAD_REQUEST);
+		else
+			return new DataResponse((['message' => 'Token added failed!','status' => 400, 'data' => 0]), Http::STATUS_BAD_REQUEST);
+	}
+
+	/**
+	 * @PublicPage
+	 * @NoCSRFRequired
+	 */
+	public function getToken($initiator){
+
+		if(!$this->authentication($this->request)) return new DataResponse((['message' => 'Authentication failed!','status' => 412, 'data' => null]), Http::STATUS_INTERNAL_SERVER_ERROR);
+
+		$qb = $this->db->getQueryBuilder();
+
+        $qb->select('*')
+		->from('ocm_tokens')
+		->where(
+			$qb->expr()->eq('token', $qb->createNamedParameter($this->request->getParam('token'), IQueryBuilder::PARAM_STR))
+		);
+
+        $cursor = $qb->execute();
+        $row = $cursor->fetchAll();
+
+		if(empty($row)){
+			return new DataResponse((['message' => 'No Token found!','status' => 201, 'data' => '']), Http::STATUS_BAD_REQUEST);
+		}else{
+			return new DataResponse(($row[0]), Http::STATUS_OK);
+		}
+		
+	}
+
+	
+	/**
+	 * @PublicPage
+	 * @NoCSRFRequired
+	 */
+	public function tokensList($initiator){
+
+		if(!$this->authentication($this->request)) return new DataResponse((['message' => 'Authentication failed!','status' => 412, 'data' => null]), Http::STATUS_INTERNAL_SERVER_ERROR);
+
+		$qb = $this->db->getQueryBuilder();
+
+        $qb->select('*')
+		->where(
+			$qb->expr()->eq('initiator', $qb->createNamedParameter($initiator, IQueryBuilder::PARAM_STR))
+		)
+		->from('ocm_tokens');
+
+        $cursor = $qb->execute();
+        $row = $cursor->fetchAll();
+		return new DataResponse(($row), Http::STATUS_OK);
+	}
+
+	
+	/**
+	 * @PublicPage
+	 * @NoCSRFRequired
+	 */
+	public function addRemoteUser($initiator){
+
+		if(!$this->authentication($this->request)) return new DataResponse((['message' => 'Authentication failed!','status' => 412, 'data' => null]), Http::STATUS_INTERNAL_SERVER_ERROR);
+		
+		if(!$this->request->getParam('opaqueUserId') and !$this->request->getParam('idp') and !$this->request->getParam('email') and !$this->request->getParam('displayName')){
+			return new DataResponse((['message' => 'values are not provided properly!','status' => 412, 'data' => null]), Http::STATUS_OK);
+		}
+
+		$qb = $this->db->getQueryBuilder();
+		
+
+        $qb->select('*')
+		->from('ocm_remote_users')
+		->where(
+			$qb->expr()->eq('opaque_user_id', $qb->createNamedParameter($this->request->getParam('opaqueUserId'), IQueryBuilder::PARAM_STR))
+		)
+		->andWhere(
+			$qb->expr()->eq('idp', $qb->createNamedParameter($this->request->getParam('idp'), IQueryBuilder::PARAM_STR))
+		)
+		->andWhere(
+			$qb->expr()->eq('email', $qb->createNamedParameter($this->request->getParam('email'), IQueryBuilder::PARAM_STR))
+		);
+        $cursor = $qb->execute();
+        $row = $cursor->fetchAll();
+		
+		if(empty($row)){
+			$qb->insert('ocm_remote_users')
+			->values(
+				array(
+					'initiator' => $qb->createNamedParameter($initiator, IQueryBuilder::PARAM_STR),
+					'opaque_user_id' => $qb->createNamedParameter($this->request->getParam('opaqueUserId'), IQueryBuilder::PARAM_STR),
+					'idp' => $qb->createNamedParameter($this->request->getParam('idp'), IQueryBuilder::PARAM_STR),
+					'email' => $qb->createNamedParameter($this->request->getParam('email'), IQueryBuilder::PARAM_STR),
+					'display_name' => $qb->createNamedParameter($this->request->getParam('displayName'), IQueryBuilder::PARAM_STR)
+				)
+			);
+			$cursor = $qb->execute();
+		}else{
+			$cursor = 0;
+		}
+
+		if($cursor || !empty($row))
+			if(!empty($row))
+				return new DataResponse((['message' => 'User exists!','status' => 400, 'data' => $row]), Http::STATUS_BAD_REQUEST);
+			if($cursor)
+				return new DataResponse((['message' => 'User added!','status' => 200, 'data' => $cursor]), Http::STATUS_OK);
+		else
+			return new DataResponse((['message' => 'User does not added!','status' => 500, 'data' => 0]), Http::STATUS_INTERNAL_SERVER_ERROR);
+	}
+
+	
+	/**
+	 * @PublicPage
+	 * @NoCSRFRequired
+	 */
+	public function getRemoteUser($initiator){
+
+		if(!$this->authentication($this->request)) return new DataResponse((['message' => 'Authentication failed!','status' => 412, 'data' => null]), Http::STATUS_INTERNAL_SERVER_ERROR);
+
+		$qb = $this->db->getQueryBuilder();
+
+        $qb->select('*')
+		->from('ocm_remote_users')
+		->where(
+			$qb->expr()->eq('initiator', $qb->createNamedParameter($initiator, IQueryBuilder::PARAM_STR))
+		)
+		->andWhere(
+			$qb->expr()->eq('idp', $qb->createNamedParameter($this->request->getParam('idp'), IQueryBuilder::PARAM_STR))
+		)
+		->andWhere(
+			$qb->expr()->eq('opaque_user_id', $qb->createNamedParameter($this->request->getParam('opaqueUserId'), IQueryBuilder::PARAM_STR))
+		);
+
+        $cursor = $qb->execute();
+        $row = $cursor->fetchAll();
+
+		if(empty($row)){
+			return new DataResponse((['message' => 'User not found!','status' => 201, 'data' => '']), Http::STATUS_BAD_REQUEST);
+		}else{
+			return new DataResponse(($this->CastToRevaUser($row[0])), Http::STATUS_OK);
+		}
+		
+	}
+
+
+	/**
+	 * @PublicPage
+	 * @NoCSRFRequired
+	 */
+	public function findRemoteUser($initiator){
+
+		$qb = $this->db->getQueryBuilder();
+
+        $qb->select('*')
+		->from('ocm_remote_users')
+		->where(
+			$qb->expr()->eq('initiator', $qb->createNamedParameter($initiator, IQueryBuilder::PARAM_STR))
+		)
+		->andWhere(
+			$qb->expr()->orX(
+				$qb->expr()->like('opaque_user_id', $qb->createNamedParameter($this->request->getParam('search'), IQueryBuilder::PARAM_STR)),
+				$qb->expr()->like('idp', $qb->createNamedParameter($this->request->getParam('search'), IQueryBuilder::PARAM_STR)),
+				$qb->expr()->like('email', $qb->createNamedParameter($this->request->getParam('search'), IQueryBuilder::PARAM_STR)),
+				$qb->expr()->like('display_name', $qb->createNamedParameter($this->request->getParam('search'), IQueryBuilder::PARAM_STR))
+			)
+		);
+
+        $cursor = $qb->execute();
+        $row = $cursor->fetchAll();
+
+		if(empty($row)){
+			return new DataResponse(([ ]), Http::STATUS_OK);
+		}else{
+			$result = [];
+			foreach($row as $item){
+				$result[] = $this->CastToRevaUser($item);
+			}
+			return new DataResponse(($result), Http::STATUS_OK);
+		}
+		
+	}
+
+	private function CastToRevaUser($user){
+		return array(
+			'opaqueUserId' => $user['opaque_user_id'],
+			'idp' => $user['idp'],
+			'email' => $user['email'],
+			'displayName' => $user['display_name']
+		);
+	}
+}
\ No newline at end of file
diff --git a/lib/Controller/AppController.php b/lib/Controller/AppController.php
index 10e677d4..9c329ecb 100644
--- a/lib/Controller/AppController.php
+++ b/lib/Controller/AppController.php
@@ -125,6 +125,9 @@ public function invitationsGenerate() {
 		$recipient = $this->request->getParam('email');
 		$invitationsData = $this->httpClient->generateTokenFromReva($this->userId, $recipient);
 		$inviteLinkStr = $invitationsData["invite_link"];
+		$iopUrl = $invitationsData["user_id"]["idp"];
+		$iopDomain =  parse_url($iopUrl)["host"];
+		// $meshDirectoryUrl = "https://sciencemesh.cesnet.cz/iop/meshdir/";
 		$meshDirectoryUrl = $this->config->getAppValue('sciencemesh', 'meshDirectoryUrl', 'https://sciencemesh.cesnet.cz/iop/meshdir/');
     if (!$inviteLinkStr) {
 			return new TextPlainResponse("Unexpected response from Reva", Http::STATUS_INTERNAL_SERVER_ERROR);
diff --git a/lib/Migration/Version0001Date202305082200.php b/lib/Migration/Version0001Date202305082200.php
new file mode 100644
index 00000000..da7e4ea3
--- /dev/null
+++ b/lib/Migration/Version0001Date202305082200.php
@@ -0,0 +1,68 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OCA\ScienceMesh\Migration;
+
+use Closure;
+use OCP\DB\ISchemaWrapper;
+use OCP\Migration\IOutput;
+use Doctrine\DBAL\Types\Types;
+use OCP\Migration\SimpleMigrationStep;
+
+/**
+ * Auto-generated migration step: Please modify to your needs!
+ */
+class Version0001Date202305082200 extends SimpleMigrationStep {
+
+	/**
+	 * @param IOutput $output
+	 * @param Closure $schemaClosure The `\Closure` returns a `ISchemaWrapper`
+	 * @param array $options
+	 */
+	public function preSchemaChange(IOutput $output, Closure $schemaClosure, array $options) {
+	}
+
+	/**
+	 * @param IOutput $output
+	 * @param Closure $schemaClosure The `\Closure` returns a `ISchemaWrapper`
+	 * @param array $options
+	 * @return null|ISchemaWrapper
+	 */
+	public function changeSchema(IOutput $output, Closure $schemaClosure, array $options) {
+		/** @var ISchemaWrapper $schema */
+		$schema = $schemaClosure();
+
+		if (!$schema->hasTable('ocm_tokens')) {
+			$table = $schema->createTable("ocm_tokens");
+			$table->addColumn('id', 'integer', ['autoincrement' => true, 'notnull' => true]);
+			$table->addColumn('token', 'string', ['length' => 255, 'notnull' => true]);
+			$table->addColumn('initiator', 'string', ['length' => 255, 'notnull' => true]);
+			$table->addColumn('expiration', 'string', ['length' => 255, 'notnull' => true]);
+			$table->addColumn('description', 'string', ['length' => 255, 'notnull' => true]);
+			$table->setPrimaryKey(['id']);
+		}
+
+		
+		if (!$schema->hasTable('ocm_remote_users')) {
+			$table1 = $schema->createTable("ocm_remote_users");
+			$table1->addColumn('id', 'integer', ['autoincrement' => true, 'notnull' => true]);
+			$table1->addColumn('opaque_user_id', 'string', ['length' => 255, 'notnull' => true]);
+			$table1->addColumn('idp', 'string', ['length' => 255, 'notnull' => true]);
+			$table1->addColumn('email', 'string', ['length' => 255, 'notnull' => true]);
+			$table1->addColumn('initiator', 'string', ['length' => 255, 'notnull' => true]);
+			$table1->addColumn('display_name', 'string', ['length' => 255, 'notnull' => true]);
+			$table1->setPrimaryKey(['id']);
+		}
+
+		return $schema;
+	}
+
+	/**
+	 * @param IOutput $output
+	 * @param Closure $schemaClosure The `\Closure` returns a `ISchemaWrapper`
+	 * @param array $options
+	 */
+	public function postSchemaChange(IOutput $output, Closure $schemaClosure, array $options) {
+	}
+}
diff --git a/lib/Migration/Version0001Date202305101500.php b/lib/Migration/Version0001Date202305101500.php
new file mode 100644
index 00000000..9b2e6074
--- /dev/null
+++ b/lib/Migration/Version0001Date202305101500.php
@@ -0,0 +1,68 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OCA\ScienceMesh\Migration;
+
+use Closure;
+use OCP\DB\ISchemaWrapper;
+use OCP\Migration\IOutput;
+use Doctrine\DBAL\Types\Types;
+use OCP\Migration\SimpleMigrationStep;
+
+/**
+ * Auto-generated migration step: Please modify to your needs!
+ */
+class Version0001Date202305101500 extends SimpleMigrationStep {
+
+	/**
+	 * @param IOutput $output
+	 * @param Closure $schemaClosure The `\Closure` returns a `ISchemaWrapper`
+	 * @param array $options
+	 */
+	public function preSchemaChange(IOutput $output, Closure $schemaClosure, array $options) {
+	}
+
+	/**
+	 * @param IOutput $output
+	 * @param Closure $schemaClosure The `\Closure` returns a `ISchemaWrapper`
+	 * @param array $options
+	 * @return null|ISchemaWrapper
+	 */
+	public function changeSchema(IOutput $output, Closure $schemaClosure, array $options) {
+		/** @var ISchemaWrapper $schema */
+		$schema = $schemaClosure();
+
+		if (!$schema->hasTable('ocm_tokens')) {
+			$table = $schema->createTable("ocm_tokens");
+			$table->addColumn('id', 'integer', ['autoincrement' => true, 'notnull' => true]);
+			$table->addColumn('token', 'string', ['length' => 255, 'notnull' => true]);
+			$table->addColumn('initiator', 'string', ['length' => 255, 'notnull' => true]);
+			$table->addColumn('expiration', 'string', ['length' => 255, 'notnull' => true]);
+			$table->addColumn('description', 'string', ['length' => 255, 'notnull' => true]);
+			$table->setPrimaryKey(['id']);
+		}
+
+		
+		if (!$schema->hasTable('ocm_remote_users')) {
+			$table1 = $schema->createTable("ocm_remote_users");
+			$table1->addColumn('id', 'integer', ['autoincrement' => true, 'notnull' => true]);
+			$table1->addColumn('opaque_user_id', 'string', ['length' => 255, 'notnull' => true]);
+			$table1->addColumn('idp', 'string', ['length' => 255, 'notnull' => true]);
+			$table1->addColumn('email', 'string', ['length' => 255, 'notnull' => true]);
+			$table1->addColumn('initiator', 'string', ['length' => 255, 'notnull' => true]);
+			$table1->addColumn('display_name', 'string', ['length' => 255, 'notnull' => true]);
+			$table1->setPrimaryKey(['id']);
+		}
+
+		return $schema;
+	}
+
+	/**
+	 * @param IOutput $output
+	 * @param Closure $schemaClosure The `\Closure` returns a `ISchemaWrapper`
+	 * @param array $options
+	 */
+	public function postSchemaChange(IOutput $output, Closure $schemaClosure, array $options) {
+	}
+}
diff --git a/lib/Migration/Version0001Date202305101530.php b/lib/Migration/Version0001Date202305101530.php
new file mode 100644
index 00000000..1adb01bc
--- /dev/null
+++ b/lib/Migration/Version0001Date202305101530.php
@@ -0,0 +1,68 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OCA\ScienceMesh\Migration;
+
+use Closure;
+use OCP\DB\ISchemaWrapper;
+use OCP\Migration\IOutput;
+use Doctrine\DBAL\Types\Types;
+use OCP\Migration\SimpleMigrationStep;
+
+/**
+ * Auto-generated migration step: Please modify to your needs!
+ */
+class Version0001Date202305101530 extends SimpleMigrationStep {
+
+	/**
+	 * @param IOutput $output
+	 * @param Closure $schemaClosure The `\Closure` returns a `ISchemaWrapper`
+	 * @param array $options
+	 */
+	public function preSchemaChange(IOutput $output, Closure $schemaClosure, array $options) {
+	}
+
+	/**
+	 * @param IOutput $output
+	 * @param Closure $schemaClosure The `\Closure` returns a `ISchemaWrapper`
+	 * @param array $options
+	 * @return null|ISchemaWrapper
+	 */
+	public function changeSchema(IOutput $output, Closure $schemaClosure, array $options) {
+		/** @var ISchemaWrapper $schema */
+		$schema = $schemaClosure();
+
+		if (!$schema->hasTable('ocm_tokens')) {
+			$table = $schema->createTable("ocm_tokens");
+			$table->addColumn('id', 'integer', ['autoincrement' => true, 'notnull' => true]);
+			$table->addColumn('token', 'string', ['length' => 255, 'notnull' => true]);
+			$table->addColumn('initiator', 'string', ['length' => 255, 'notnull' => true]);
+			$table->addColumn('expiration', 'string', ['length' => 255, 'notnull' => true]);
+			$table->addColumn('description', 'string', ['length' => 255, 'notnull' => true]);
+			$table->setPrimaryKey(['id']);
+		}
+
+		
+		if (!$schema->hasTable('ocm_remote_users')) {
+			$table1 = $schema->createTable("ocm_remote_users");
+			$table1->addColumn('id', 'integer', ['autoincrement' => true, 'notnull' => true]);
+			$table1->addColumn('opaque_user_id', 'string', ['length' => 255, 'notnull' => true]);
+			$table1->addColumn('idp', 'string', ['length' => 255, 'notnull' => true]);
+			$table1->addColumn('email', 'string', ['length' => 255, 'notnull' => true]);
+			$table1->addColumn('initiator', 'string', ['length' => 255, 'notnull' => true]);
+			$table1->addColumn('display_name', 'string', ['length' => 255, 'notnull' => true]);
+			$table1->setPrimaryKey(['id']);
+		}
+
+		return $schema;
+	}
+
+	/**
+	 * @param IOutput $output
+	 * @param Closure $schemaClosure The `\Closure` returns a `ISchemaWrapper`
+	 * @param array $options
+	 */
+	public function postSchemaChange(IOutput $output, Closure $schemaClosure, array $options) {
+	}
+}