diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000..b0b42d7
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,56 @@
+# EditorConfig is awesome: http://EditorConfig.org
+
+# top-most EditorConfig file
+root = true
+
+# Unix-style newlines with a newline ending every file
+[*]
+charset = utf-8
+end_of_line = lf
+indent_style = space
+indent_size = 4
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+# TS/JS-Files
+[*.{ts,js}]
+indent_size = 2
+
+# JSON-Files
+[*.json]
+indent_style = tab
+
+# ReST-Files
+[*.rst]
+indent_size = 4
+max_line_length = 80
+
+# YAML-Files
+[*.{yaml,yml}]
+indent_size = 2
+
+# NEON-Files
+[*.neon]
+indent_size = 2
+indent_style = tab
+
+# package.json
+[package.json]
+indent_size = 2
+
+# TypoScript
+[*.{typoscript,tsconfig}]
+indent_size = 2
+
+# XLF-Files
+[*.xlf]
+indent_style = tab
+
+# SQL-Files
+[*.sql]
+indent_style = tab
+indent_size = 2
+
+# .htaccess
+[{_.htaccess,.htaccess}]
+indent_style = tab
\ No newline at end of file
diff --git a/Classes/Controller/BookedController.php b/Classes/Controller/BookedController.php
new file mode 100644
index 0000000..51e0310
--- /dev/null
+++ b/Classes/Controller/BookedController.php
@@ -0,0 +1,49 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the package slub/slub-profile-booked
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE file that was distributed with this source code.
+ */
+
+namespace Slub\SlubProfileBooked\Controller;
+
+use JsonException;
+use Psr\Http\Message\ResponseInterface;
+use Slub\SlubProfileBooked\Mvc\View\JsonView;
+use Slub\SlubProfileBooked\Service\BookedService;
+use TYPO3\CMS\Core\Context\Exception\AspectNotFoundException;
+use TYPO3\CMS\Extbase\Mvc\Controller\ActionController;
+
+class BookedController extends ActionController
+{
+    protected $view;
+    protected $defaultViewObjectName = JsonView::class;
+    protected BookedService $bookedService;
+
+    /**
+     * @param BookedService $bookedService
+     */
+    public function __construct(BookedService $bookedService)
+    {
+        $this->bookedService = $bookedService;
+    }
+
+    /**
+     * @return ResponseInterface
+     * @throws AspectNotFoundException
+     * @throws JsonException
+     */
+    public function listAction(): ResponseInterface
+    {
+        $booked['booked'] = $this->bookedService->getBooked($this->request->getArguments());
+
+        $this->view->setVariablesToRender(['bookedList']);
+        $this->view->assign('bookedList', $booked);
+
+        return $this->jsonResponse();
+    }
+}
diff --git a/Classes/Domain/Model/Dto/ApiConfiguration.php b/Classes/Domain/Model/Dto/ApiConfiguration.php
new file mode 100644
index 0000000..d345d14
--- /dev/null
+++ b/Classes/Domain/Model/Dto/ApiConfiguration.php
@@ -0,0 +1,97 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the package slub/slub-profile-booked
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE file that was distributed with this source code.
+ */
+
+namespace Slub\SlubProfileBooked\Domain\Model\Dto;
+
+use Exception;
+use Slub\SlubProfileBooked\Utility\ConstantsUtility;
+use TYPO3\CMS\Core\Configuration\ExtensionConfiguration;
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+
+class ApiConfiguration
+{
+    protected string $authenticationUsername = '';
+    protected string $authenticationPassword = '';
+    protected string $requestUri = '';
+
+    public function __construct()
+    {
+        $configuration = $this->getConfiguration(ConstantsUtility::EXTENSION_KEY);
+
+        empty($configuration['authenticationUsername']) ?: $this->setAuthenticationUsername($configuration['authenticationUsername']);
+        empty($configuration['authenticationPassword']) ?: $this->setAuthenticationPassword($configuration['authenticationPassword']);
+        empty($configuration['requestUri']) ?: $this->setRequestUri($configuration['requestUri']);
+    }
+
+    /**
+     * @return string
+     */
+    public function getAuthenticationUsername(): string
+    {
+        return $this->authenticationUsername;
+    }
+
+    /**
+     * @param string $authenticationUsername
+     */
+    public function setAuthenticationUsername(string $authenticationUsername = ''): void
+    {
+        $this->authenticationUsername = $authenticationUsername;
+    }
+
+    /**
+     * @return string
+     */
+    public function getAuthenticationPassword(): string
+    {
+        return $this->authenticationPassword;
+    }
+
+    /**
+     * @param string $authenticationPassword
+     */
+    public function setAuthenticationPassword(string $authenticationPassword = ''): void
+    {
+        $this->authenticationPassword = $authenticationPassword;
+    }
+
+    /**
+     * @return string
+     */
+    public function getRequestUri(): string
+    {
+        return $this->requestUri;
+    }
+
+    /**
+     * @param string $requestUri
+     */
+    public function setRequestUri(string $requestUri = ''): void
+    {
+        $this->requestUri = $requestUri;
+    }
+
+    /**
+     * @param string $extensionKey
+     * @return array
+     */
+    protected function getConfiguration(string $extensionKey = ''): array
+    {
+        /** @var ExtensionConfiguration $extensionConfiguration */
+        $extensionConfiguration = GeneralUtility::makeInstance(ExtensionConfiguration::class);
+
+        try {
+            return $extensionConfiguration->get($extensionKey);
+        } catch (Exception $e) {
+            return [];
+        }
+    }
+}
diff --git a/Classes/Http/Request.php b/Classes/Http/Request.php
new file mode 100644
index 0000000..4a94c0d
--- /dev/null
+++ b/Classes/Http/Request.php
@@ -0,0 +1,108 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the package slub/slub-profile-booked
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE file that was distributed with this source code.
+ */
+
+namespace Slub\SlubProfileBooked\Http;
+
+use GuzzleHttp\Exception\RequestException;
+use Psr\Http\Message\RequestFactoryInterface;
+use Psr\Http\Message\ResponseInterface;
+use Psr\Log\LoggerInterface;
+use TYPO3\CMS\Core\Utility\ArrayUtility;
+
+class Request
+{
+    public array $options = [
+        'headers' => [
+            'Cache-Control' => 'no-cache'
+        ],
+        'allow_redirects' => false
+    ];
+    protected LoggerInterface $logger;
+    protected RequestFactoryInterface $requestFactory;
+
+    /**
+     * @param LoggerInterface $logger
+     * @param RequestFactoryInterface $requestFactory
+     */
+    public function __construct(
+        LoggerInterface $logger,
+        RequestFactoryInterface $requestFactory
+    ) {
+        $this->logger = $logger;
+        $this->requestFactory = $requestFactory;
+    }
+
+    /**
+     * @param string $uri
+     * @param string $method
+     * @param array $options
+     * @return array|null
+     */
+    public function process(string $uri = '', string $method = 'GET', array $options = []): ?array
+    {
+        try {
+            $options = $this->mergeOptions($this->options, $options);
+            $response = $this->requestFactory->request($uri, $method, $options);
+
+            return $this->getContent($response, $uri);
+        } catch (RequestException $e) {
+            /** @extensionScannerIgnoreLine */
+            $this->logger->error($e->getMessage());
+
+            return null;
+        }
+    }
+
+    /**
+     * @param array $default
+     * @param array $new
+     * @return array
+     */
+    protected function mergeOptions(array $default, array $new): array
+    {
+        if (count($new) > 0) {
+            ArrayUtility::mergeRecursiveWithOverrule($default, $new);
+        }
+
+        return $default;
+    }
+
+    /**
+     * @param ResponseInterface $response
+     * @param string $uri
+     * @return array|null
+     */
+    protected function getContent(ResponseInterface $response, string $uri = ''): ?array
+    {
+        $content = '';
+
+        if ($response->getStatusCode() === 200 &&
+            strpos($response->getHeaderLine('Content-Type'), 'application/json') === 0
+        ) {
+            $content = (array)json_decode($response->getBody()->getContents(), true);
+        }
+
+        if (empty($content)) {
+            $this->logger->warning(
+                'Requesting {request} was not successful, got status code {status} ({reason})',
+                [
+                    'request' => $uri,
+                    'status' => $response->getStatusCode(),
+                    'reason' => $response->getReasonPhrase(),
+                ]
+            );
+
+            return null;
+        }
+
+        return $content;
+    }
+}
diff --git a/Classes/Mvc/View/JsonView.php b/Classes/Mvc/View/JsonView.php
new file mode 100644
index 0000000..59bd77a
--- /dev/null
+++ b/Classes/Mvc/View/JsonView.php
@@ -0,0 +1,60 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the package slub/slub-profile-booked
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE file that was distributed with this source code.
+ */
+
+namespace Slub\SlubProfileBooked\Mvc\View;
+
+use TYPO3\CMS\Extbase\Mvc\View\JsonView as ExtbaseJsonView;
+
+class JsonView extends ExtbaseJsonView
+{
+    /**
+     * The rendering configuration for this JSON view which
+     * determines which properties of each variable to render.
+     * In default all data are given.
+     *
+     * You can exclude fields like:
+     *
+     * 'booked' => [
+     *     '_descendAll' => [
+     *         '_exclude' => [
+     *             'categories',
+     *             'contact',
+     *             'discipline'
+     *         ]
+     *     ]
+     * ]
+     */
+    protected array $bookedConfiguration = [
+        'bookedList' => [
+            '_only' => [
+                'booked'
+            ],
+            'booked' => [
+                '_descendAll' => [
+                    '_only' => [
+                        'referenceNumber',
+                        'startDate',
+                        'endDate',
+                        'resourceName',
+                        'title',
+                        'description',
+                        'duration'
+                    ],
+                ]
+            ]
+        ]
+    ];
+
+    public function __construct()
+    {
+        $this->setConfiguration($this->bookedConfiguration);
+    }
+}
diff --git a/Classes/Routing/UriGenerator.php b/Classes/Routing/UriGenerator.php
new file mode 100644
index 0000000..4228bb6
--- /dev/null
+++ b/Classes/Routing/UriGenerator.php
@@ -0,0 +1,54 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the package slub/slub-profile-booked
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE file that was distributed with this source code.
+ */
+
+namespace Slub\SlubProfileBooked\Routing;
+
+use Slub\SlubProfileBooked\Domain\Model\Dto\ApiConfiguration;
+
+class UriGenerator
+{
+    protected ApiConfiguration $apiConfiguration;
+
+    /**
+     * @param ApiConfiguration $apiConfiguration
+     */
+    public function __construct(ApiConfiguration $apiConfiguration)
+    {
+        $this->apiConfiguration = $apiConfiguration;
+    }
+
+    /**
+     * @return string
+     */
+    public function buildAuthenticationUri(): string
+    {
+        /** @extensionScannerIgnoreLine */
+        return $this->apiConfiguration->getRequestUri() . 'Authentication/Authenticate';
+    }
+
+    /**
+     * @return string
+     */
+    public function buildUsersUri(): string
+    {
+        /** @extensionScannerIgnoreLine */
+        return $this->apiConfiguration->getRequestUri() . 'Users/';
+    }
+
+    /**
+     * @return string
+     */
+    public function buildReservationsUri(): string
+    {
+        /** @extensionScannerIgnoreLine */
+        return $this->apiConfiguration->getRequestUri() . 'Reservations/';
+    }
+}
diff --git a/Classes/Sanitization/BookedArgumentSanitization.php b/Classes/Sanitization/BookedArgumentSanitization.php
new file mode 100644
index 0000000..96baa32
--- /dev/null
+++ b/Classes/Sanitization/BookedArgumentSanitization.php
@@ -0,0 +1,41 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the package slub/slub-profile-booked
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE file that was distributed with this source code.
+ */
+
+namespace Slub\SlubProfileBooked\Sanitization;
+
+class BookedArgumentSanitization
+{
+    protected array $sanitizedArguments = [];
+
+    /**
+     * @param array $arguments
+     * @return array
+     */
+    public function sanitizeArguments(array $arguments): array
+    {
+        if (count($arguments) === 0) {
+            return ['user' => 0];
+        }
+
+        $this->sanitizeInteger('user', $arguments['user']);
+
+        return $this->sanitizedArguments;
+    }
+
+    /**
+     * @param string $key
+     * @param string $value
+     */
+    protected function sanitizeInteger(string $key = '', string $value = ''): void
+    {
+        empty($value) ?: $this->sanitizedArguments[$key] = (int)$value;
+    }
+}
diff --git a/Classes/Service/AuthenticationService.php b/Classes/Service/AuthenticationService.php
new file mode 100644
index 0000000..84de77b
--- /dev/null
+++ b/Classes/Service/AuthenticationService.php
@@ -0,0 +1,86 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the package slub/slub-profile-booked
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE file that was distributed with this source code.
+ */
+
+namespace Slub\SlubProfileBooked\Service;
+
+use JsonException;
+use Slub\SlubProfileBooked\Domain\Model\Dto\ApiConfiguration;
+use Slub\SlubProfileBooked\Http\Request;
+use Slub\SlubProfileBooked\Routing\UriGenerator;
+
+class AuthenticationService
+{
+    protected ApiConfiguration $apiConfiguration;
+    protected Request $request;
+    protected UriGenerator $uriGenerator;
+
+    /**
+     * @param ApiConfiguration $apiConfiguration
+     * @param Request $request
+     * @param UriGenerator $uriGenerator
+     */
+    public function __construct(
+        ApiConfiguration $apiConfiguration,
+        Request $request,
+        UriGenerator $uriGenerator
+    ) {
+        $this->apiConfiguration = $apiConfiguration;
+        $this->request = $request;
+        $this->uriGenerator = $uriGenerator;
+    }
+
+    /**
+     * @return array
+     * @throws JsonException
+     */
+    public function getHeaders(): array
+    {
+        $authentication = $this->getAuthentication();
+
+        if ($authentication['isAuthenticated'] === true) {
+            return [
+                'headers' => [
+                    'X-Booked-SessionToken' => $authentication['sessionToken'],
+                    'X-Booked-UserId' => $authentication['userId']
+                ]
+            ];
+        }
+
+        return [];
+    }
+
+    /**
+     * @return array
+     * @throws JsonException
+     */
+    protected function getAuthentication(): array
+    {
+        $uri = $this->uriGenerator->buildAuthenticationUri();
+        /** @extensionScannerIgnoreLine */
+        $options = $this->getOptions();
+
+        return $this->request->process($uri, 'POST', $options) ?? [];
+    }
+
+    /**
+     * @return array
+     * @throws JsonException
+     */
+    protected function getOptions(): array
+    {
+        return [
+            'body' => json_encode([
+                'username' => $this->apiConfiguration->getAuthenticationUsername(),
+                'password' => $this->apiConfiguration->getAuthenticationPassword()
+            ], JSON_THROW_ON_ERROR)
+        ];
+    }
+}
diff --git a/Classes/Service/BookedService.php b/Classes/Service/BookedService.php
new file mode 100644
index 0000000..c01ec31
--- /dev/null
+++ b/Classes/Service/BookedService.php
@@ -0,0 +1,60 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the package slub/slub-profile-booked
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE file that was distributed with this source code.
+ */
+
+namespace Slub\SlubProfileBooked\Service;
+
+use JsonException;
+use Slub\SlubProfileBooked\Sanitization\BookedArgumentSanitization;
+
+class BookedService
+{
+    protected AuthenticationService $authenticationService;
+    protected BookedArgumentSanitization $bookedArgumentSanitization;
+    protected ReservationService $reservationService;
+    protected UserService $userService;
+
+    /**
+     * @param AuthenticationService $authenticationService
+     * @param BookedArgumentSanitization $bookedArgumentSanitization
+     * @param ReservationService $reservationService
+     * @param UserService $userService
+     */
+    public function __construct(
+        AuthenticationService $authenticationService,
+        BookedArgumentSanitization $bookedArgumentSanitization,
+        ReservationService $reservationService,
+        UserService $userService
+    ) {
+        $this->authenticationService = $authenticationService;
+        $this->bookedArgumentSanitization = $bookedArgumentSanitization;
+        $this->reservationService = $reservationService;
+        $this->userService = $userService;
+    }
+
+    /**
+     * @param array $arguments
+     * @return array
+     * @throws JsonException
+     */
+    public function getBooked(array $arguments): array
+    {
+        $sanitizedArguments = $this->bookedArgumentSanitization->sanitizeArguments($arguments);
+        $requestOptions = $this->authenticationService->getHeaders();
+
+        // There is no direct way to get the user nor his reservations.
+        // Collect all reservations and users and pick those who are relevant.
+        $reservations = $this->reservationService->getData($requestOptions);
+        $users = $this->userService->getData($requestOptions);
+        $currentUser = $this->userService->findByUserName($users, (string)$sanitizedArguments['user']);
+
+        return $this->reservationService->findByUserId($reservations, (string)$currentUser['id']);
+    }
+}
diff --git a/Classes/Service/ReservationService.php b/Classes/Service/ReservationService.php
new file mode 100644
index 0000000..1f5c468
--- /dev/null
+++ b/Classes/Service/ReservationService.php
@@ -0,0 +1,62 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the package slub/slub-profile-booked
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE file that was distributed with this source code.
+ */
+
+namespace Slub\SlubProfileBooked\Service;
+
+use Slub\SlubProfileBooked\Http\Request;
+use Slub\SlubProfileBooked\Routing\UriGenerator;
+
+class ReservationService
+{
+    protected Request $request;
+    protected UriGenerator $uriGenerator;
+
+    /**
+     * @param Request $request
+     * @param UriGenerator $uriGenerator
+     */
+    public function __construct(
+        Request $request,
+        UriGenerator $uriGenerator
+    ) {
+        $this->request = $request;
+        $this->uriGenerator = $uriGenerator;
+    }
+
+    /**
+     * @param array $reservations
+     * @param string $userId
+     * @return array
+     */
+    public function findByUserId(array $reservations, string $userId): array
+    {
+        $userReservations = [];
+
+        foreach ($reservations as $reservation) {
+            if ($reservation['userId'] === $userId) {
+                $userReservations[] = $reservation;
+            }
+        }
+
+        return $userReservations;
+    }
+
+    /**
+     * @param array $options
+     * @return array
+     */
+    public function getData(array $options): array
+    {
+        $uri = $this->uriGenerator->buildReservationsUri();
+
+        return $this->request->process($uri, 'GET', $options)['reservations'] ?? [];
+    }
+}
diff --git a/Classes/Service/UserService.php b/Classes/Service/UserService.php
new file mode 100644
index 0000000..ce0518f
--- /dev/null
+++ b/Classes/Service/UserService.php
@@ -0,0 +1,60 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the package slub/slub-profile-booked
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE file that was distributed with this source code.
+ */
+
+namespace Slub\SlubProfileBooked\Service;
+
+use Slub\SlubProfileBooked\Http\Request;
+use Slub\SlubProfileBooked\Routing\UriGenerator;
+
+class UserService
+{
+    protected Request $request;
+    protected UriGenerator $uriGenerator;
+
+    /**
+     * @param Request $request
+     * @param UriGenerator $uriGenerator
+     */
+    public function __construct(
+        Request $request,
+        UriGenerator $uriGenerator
+    ) {
+        $this->request = $request;
+        $this->uriGenerator = $uriGenerator;
+    }
+
+    /**
+     * @param array $users
+     * @param string $userName
+     * @return array
+     */
+    public function findByUserName(array $users, string $userName): array
+    {
+        foreach ($users as $user) {
+            if ($user['userName'] === $userName) {
+                return $user;
+            }
+        }
+
+        return [];
+    }
+
+    /**
+     * @param array $options
+     * @return array
+     */
+    public function getData(array $options): array
+    {
+        $uri = $this->uriGenerator->buildUsersUri();
+
+        return $this->request->process($uri, 'GET', $options)['users'] ?? [];
+    }
+}
diff --git a/Classes/Utility/ConstantsUtility.php b/Classes/Utility/ConstantsUtility.php
new file mode 100644
index 0000000..0f3e61e
--- /dev/null
+++ b/Classes/Utility/ConstantsUtility.php
@@ -0,0 +1,18 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+* This file is part of the package slub/slub-profile-booked
+*
+* For the full copyright and license information, please read the
+* LICENSE file that was distributed with this source code.
+*/
+
+namespace Slub\SlubProfileBooked\Utility;
+
+class ConstantsUtility
+{
+    public const EXTENSION_NAME = 'slubprofilebooked';
+    public const EXTENSION_KEY = 'slub_profile_booked';
+}
diff --git a/Classes/Utility/LanguageUtility.php b/Classes/Utility/LanguageUtility.php
new file mode 100644
index 0000000..c741b9d
--- /dev/null
+++ b/Classes/Utility/LanguageUtility.php
@@ -0,0 +1,68 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+* This file is part of the package slub/slub-profile-booked
+*
+* For the full copyright and license information, please read the
+* LICENSE file that was distributed with this source code.
+*/
+
+namespace Slub\SlubProfileBooked\Utility;
+
+use TYPO3\CMS\Core\Context\Context;
+use TYPO3\CMS\Core\Context\Exception\AspectNotFoundException;
+use TYPO3\CMS\Core\Exception\SiteNotFoundException;
+use TYPO3\CMS\Core\Site\Entity\Site;
+use TYPO3\CMS\Core\Site\Entity\SiteLanguage;
+use TYPO3\CMS\Core\Site\SiteFinder;
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+use UnexpectedValueException;
+
+class LanguageUtility
+{
+    /**
+     * @param int $pageUid
+     * @return SiteLanguage
+     * @throws AspectNotFoundException
+     */
+    public static function getSiteLanguage(int $pageUid): SiteLanguage
+    {
+        $site = self::getSite($pageUid);
+        $languageUid = self::getUid();
+
+        return $site->getLanguageById($languageUid);
+    }
+
+    /**
+     * @return int
+     * @throws AspectNotFoundException
+     */
+    public static function getUid(): int
+    {
+        /** @var Context $context */
+        $context = GeneralUtility::makeInstance(Context::class);
+
+        return (int)$context->getPropertyFromAspect('language', 'id');
+    }
+
+    /**
+     * @param int $pageUid
+     * @return Site
+     */
+    protected static function getSite(int $pageUid): Site
+    {
+        /** @var SiteFinder $siteFinder */
+        $siteFinder = GeneralUtility::makeInstance(SiteFinder::class);
+
+        try {
+            return $siteFinder->getSiteByPageId($pageUid);
+        } catch (SiteNotFoundException $e) {
+            throw new UnexpectedValueException(
+                'A site not found by "' . $pageUid . '".',
+                1490360742
+            );
+        }
+    }
+}
diff --git a/Configuration/Icons.php b/Configuration/Icons.php
new file mode 100644
index 0000000..cff8368
--- /dev/null
+++ b/Configuration/Icons.php
@@ -0,0 +1,14 @@
+<?php
+
+defined('TYPO3') || die();
+
+return [
+    'slubprofilebooked-wizard-bookedlist' => [
+        'provider' => \TYPO3\CMS\Core\Imaging\IconProvider\SvgIconProvider::class,
+        'source' => 'EXT:slub_profile_booked/Resources/Public/Icons/Wizard/booked-list.svg'
+    ],
+    'slubprofilebooked-overlay-extension' => [
+        'provider' => \TYPO3\CMS\Core\Imaging\IconProvider\SvgIconProvider::class,
+        'source' => 'EXT:slub_profile_booked/Resources/Public/Icons/Overlay/extension.svg'
+    ]
+];
diff --git a/Configuration/Routes/BookedList.yaml b/Configuration/Routes/BookedList.yaml
new file mode 100644
index 0000000..f8da053
--- /dev/null
+++ b/Configuration/Routes/BookedList.yaml
@@ -0,0 +1,10 @@
+routeEnhancers:
+  SlubBookedBookedList:
+    type: Simple
+    limitToPages: [23]
+    routePath: '/{user}'
+    requirements:
+      user: '[0-9]{1,10}'
+    _arguments:
+      user: 'tx_slubprofilebooked_bookedlist/user'
+
diff --git a/Configuration/Routes/Default.yaml b/Configuration/Routes/Default.yaml
new file mode 100644
index 0000000..634f535
--- /dev/null
+++ b/Configuration/Routes/Default.yaml
@@ -0,0 +1,5 @@
+# This route enhancer config is not final
+# But you can simply include it in your site configuration:
+imports:
+  - resource: 'EXT:slub_profile_booked/Configuration/Routes/BookedList.yaml'
+
diff --git a/Configuration/Services.yaml b/Configuration/Services.yaml
new file mode 100644
index 0000000..36fab67
--- /dev/null
+++ b/Configuration/Services.yaml
@@ -0,0 +1,26 @@
+services:
+  _defaults:
+    autowire: true
+    autoconfigure: true
+    public: false
+
+  Slub\SlubProfileBooked\:
+    resource: '../Classes/*'
+
+  Slub\SlubProfileBooked\Http\Request:
+    public: true
+
+  Slub\SlubProfileBooked\Routing\UriGenerator:
+    public: true
+
+  Slub\SlubProfileBooked\Service\AuthenticationService:
+    public: true
+
+  Slub\SlubProfileBooked\Service\BookedService:
+    public: true
+
+  Slub\SlubProfileBooked\Service\ReservationService:
+    public: true
+
+  Slub\SlubProfileBooked\Service\UserService:
+    public: true
diff --git a/Configuration/TCA/Overrides/sys_template.php b/Configuration/TCA/Overrides/sys_template.php
new file mode 100644
index 0000000..b8c7b47
--- /dev/null
+++ b/Configuration/TCA/Overrides/sys_template.php
@@ -0,0 +1,10 @@
+<?php
+
+defined('TYPO3') || die();
+
+// Add static typoscript
+\TYPO3\CMS\Core\Utility\ExtensionManagementUtility::addStaticFile(
+    'slub_profile_booked',
+    'Configuration/TypoScript/',
+    'SLUB profile booked'
+);
diff --git a/Configuration/TCA/Overrides/tt_content.php b/Configuration/TCA/Overrides/tt_content.php
new file mode 100644
index 0000000..6986b18
--- /dev/null
+++ b/Configuration/TCA/Overrides/tt_content.php
@@ -0,0 +1,63 @@
+<?php
+
+defined('TYPO3') || die();
+
+(static function (string $extensionKey, array $pluginNames): void {
+    $extensionName = str_replace('_', '', $extensionKey);
+    $ll = [
+        'backend' => 'LLL:EXT:' . $extensionKey . '/Resources/Private/Language/locallang_backend.xlf',
+        'core' => 'LLL:EXT:core/Resources/Private/Language/Form/locallang_tabs.xlf',
+        'frontend' => 'LLL:EXT:frontend/Resources/Private/Language/locallang_ttc.xlf',
+    ];
+
+    // Add new group to ctype selector
+    TYPO3\CMS\Core\Utility\ExtensionManagementUtility::addTcaSelectItemGroup(
+        'tt_content',
+        'CType',
+        $extensionName,
+        $ll['backend'] . ':plugin.title',
+        'after:default' // Should be the same like "common" in page tsconfig
+    );
+
+    foreach ($pluginNames as $pluginName) {
+        // Merge content element definition
+        TYPO3\CMS\Core\Utility\ArrayUtility::mergeRecursiveWithOverrule($GLOBALS['TCA']['tt_content'], [
+            'ctrl' => [
+                'typeicon_classes' => [
+                    $extensionName . '_' . $pluginName => $extensionName . '-wizard-' . $pluginName,
+                ],
+            ],
+            'types' => [
+                $extensionName . '_' . $pluginName => [
+                    'showitem' => '
+                        --div--;' . $ll['core'] . ':general,
+                            --palette--;;general,
+                            --palette--;;headers,
+                        --div--;' . $ll['core'] . ':language,
+                            --palette--;;language,
+                        --div--;' . $ll['core'] . ':access,
+                            --palette--;;hidden,
+                            --palette--;;access,
+                        --div--;' . $ll['core'] . ':notes,
+                            rowDescription,
+                        --div--;' . $ll['core'] . ':extended',
+                ],
+            ],
+        ]);
+
+        // Add item to select field list (ctype)
+        TYPO3\CMS\Core\Utility\ExtensionManagementUtility::addTcaSelectItem(
+            'tt_content',
+            'CType',
+            [
+                $ll['backend'] . ':plugin.' . $pluginName . '.title', // Title
+                $extensionName . '_' . $pluginName, // CType
+                $extensionName . '-wizard-' . $pluginName, // Icon identifier
+                $extensionName // Item group id
+            ]
+        );
+    }
+})(
+    'slub_profile_booked',
+    ['bookedlist']
+);
diff --git a/Configuration/TsConfig/Page.tsconfig b/Configuration/TsConfig/Page.tsconfig
new file mode 100644
index 0000000..7b5c4f4
--- /dev/null
+++ b/Configuration/TsConfig/Page.tsconfig
@@ -0,0 +1,18 @@
+mod {
+  wizards.newContentElement.wizardItems.slubprofilebooked {
+    after = common
+    header = LLL:EXT:slub_profile_booked/Resources/Private/Language/locallang_backend.xlf:plugin.title
+
+    elements {
+      slubprofilebooked_bookedlist {
+        iconIdentifier = slubprofilebooked-wizard-bookedlist
+        iconOverlay = slubprofilebooked-overlay-extension
+        title = LLL:EXT:slub_profile_booked/Resources/Private/Language/locallang_backend.xlf:plugin.bookedlist.title
+        description = LLL:EXT:slub_profile_booked/Resources/Private/Language/locallang_backend.xlf:plugin.bookedlist.description
+        tt_content_defValues.CType = slubprofilebooked_bookedlist
+      }
+    }
+
+    show := addToList(slubprofilebooked_bookedlist)
+  }
+}
diff --git a/Configuration/TypoScript/constants.typoscript b/Configuration/TypoScript/constants.typoscript
new file mode 100644
index 0000000..45ca925
--- /dev/null
+++ b/Configuration/TypoScript/constants.typoscript
@@ -0,0 +1,4 @@
+plugin.tx_slubprofilebooked {
+  # cat=plugin.tx_slubprofilebooked//a; type=string; label=Default storage PID
+  settings.storagePid = 0
+}
diff --git a/Configuration/TypoScript/setup.typoscript b/Configuration/TypoScript/setup.typoscript
new file mode 100644
index 0000000..fe7f9c4
--- /dev/null
+++ b/Configuration/TypoScript/setup.typoscript
@@ -0,0 +1,10 @@
+plugin.tx_slubprofilebooked {
+  mvc {
+    callDefaultActionIfActionCantBeResolved = 1
+    throwPageNotFoundExceptionIfActionCantBeResolved = 1
+  }
+
+  features {
+    skipDefaultArguments = 1
+  }
+}
diff --git a/README.md b/README.md
index 2a26cca..2eb3100 100644
--- a/README.md
+++ b/README.md
@@ -1 +1,41 @@
-# slub-profile-booked
\ No newline at end of file
+# TYPO3 Extension `slub_profile_booked`
+
+[![TYPO3](https://img.shields.io/badge/TYPO3-11-orange.svg)](https://typo3.org/)
+
+SLUB profile service booked rooms extension for TYPO3.
+
+## 1 Usage
+
+### 1.1 Installation using Composer
+
+The recommended way to install the extension is using [Composer][1].
+
+Run the following command within your Composer based TYPO3 project:
+
+```
+composer require slub/slub-profile-booked
+```
+
+## 2 API
+
+This extension communicates with another system to provide booked.
+
+### 2.1 Routes
+
+Please check the routes' configuration. You have to set the matching page (limitToPages). If not the routes will not work properly.
+
+### 2.2 Booked
+
+A list of booked rooms from a given user.
+
+- **Uri DDEV local:** https://ddev-slub-profile-service.ddev.site/raumbuchungen/###USER_ID###
+- **Uri general:** https://###YOUR-DOMAIN###/raumbuchungen/###USER_ID###
+
+#### 2.2.1 Extension configuration
+
+- **Uri:** Address or domain to request the data. The uri has to begin with "https://". If you connect to another ddev container, please use "https://ddev-###YOUR-CONTAINER###-web".
+- **Argument identifier:** When you request data from this extension to the booked api (external extension), you use additional parameters too. These parameters are wrapped with the "argument identifier". The default value is "tx_slubfindbooked_bookedlist". Change only if you know what you do.
+
+[1]: https://getcomposer.org/
+
+
diff --git a/Resources/Private/Language/de.locallang_backend.xlf b/Resources/Private/Language/de.locallang_backend.xlf
new file mode 100644
index 0000000..95363dd
--- /dev/null
+++ b/Resources/Private/Language/de.locallang_backend.xlf
@@ -0,0 +1,34 @@
+<?xml version="1.0" encoding="utf-8"?>
+<xliff version="1.2" xmlns="urn:oasis:names:tc:xliff:document:1.2">
+	<file source-language="en" target-language="de" datatype="plaintext" original="messages" date="2012-11-01T14:46:01Z"  product-name="slub_profile_bookeds">
+		<header/>
+		<body>
+			<trans-unit id="plugin.title" resname="plugin.title">
+				<source>Booked rooms</source>
+				<target>Raumbuchung</target>
+			</trans-unit>
+
+			<trans-unit id="plugin.bookedlist.title" resname="plugin.bookedlist.title">
+				<source>Booked rooms list</source>
+				<target>Raumbuchungsliste</target>
+			</trans-unit>
+			<trans-unit id="plugin.bookedlist.description" resname="plugin.bookedlist.description">
+				<source>List of booked rooms.</source>
+				<target>Auflistung von gebuchten Räumen.</target>
+			</trans-unit>
+
+			<trans-unit id="extensionConfiguration.requestUri" resname="extensionConfiguration.requestUri">
+				<source>URI: The uri has to begin with "https://". Another DDEV container can be addressed directly via the container with "https: // ddev - ### YOUR-CONTAINER ### - web" or the domain, if configured "external_links".</source>
+				<target>URI: Die URI muss mit "https://" anfangen. Ein anderer DDEV-Container kann direkt über den Container mit "https://ddev-###YOUR-CONTAINER###-web" angesprochen werden oder die Domain, wenn "external_links" konfiguriert.</target>
+			</trans-unit>
+			<trans-unit id="extensionConfiguration.authenticationUsername" resname="extensionConfiguration.authenticationUsername">
+				<source>Authentication username</source>
+				<target>Authentifizierung Benutzer</target>
+			</trans-unit>
+			<trans-unit id="extensionConfiguration.authenticationPassword" resname="extensionConfiguration.authenticationPassword">
+				<source>Authentication password</source>
+				<target>Authentifizierung Passwort</target>
+			</trans-unit>
+		</body>
+	</file>
+</xliff>
diff --git a/Resources/Private/Language/locallang_backend.xlf b/Resources/Private/Language/locallang_backend.xlf
new file mode 100644
index 0000000..ded20d8
--- /dev/null
+++ b/Resources/Private/Language/locallang_backend.xlf
@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="utf-8"?>
+<xliff version="1.2" xmlns="urn:oasis:names:tc:xliff:document:1.2">
+	<file source-language="en" datatype="plaintext" original="messages" date="2012-11-01T14:46:01Z"  product-name="slub_profile_booked">
+		<header/>
+		<body>
+			<trans-unit id="plugin.title" resname="plugin.title">
+				<source>Booked rooms</source>
+			</trans-unit>
+
+			<trans-unit id="plugin.bookedlist.title" resname="plugin.bookedlist.title">
+				<source>Booked rooms list</source>
+			</trans-unit>
+			<trans-unit id="plugin.bookedlist.description" resname="plugin.bookedlist.description">
+				<source>List of booked rooms.</source>
+			</trans-unit>
+
+			<trans-unit id="extensionConfiguration.requestUri" resname="extensionConfiguration.requestUri">
+				<source>URI: The uri has to begin with "https://". Another DDEV container can be addressed directly via the container with "https: // ddev - ### YOUR-CONTAINER ### - web" or the domain, if configured "external_links".</source>
+			</trans-unit>
+			<trans-unit id="extensionConfiguration.authenticationUsername" resname="extensionConfiguration.authenticationUsername">
+				<source>Authentication username</source>
+			</trans-unit>
+			<trans-unit id="extensionConfiguration.authenticationPassword" resname="extensionConfiguration.authenticationPassword">
+				<source>Authentication password</source>
+			</trans-unit>
+		</body>
+	</file>
+</xliff>
diff --git a/Resources/Public/Icons/Extension.svg b/Resources/Public/Icons/Extension.svg
new file mode 100644
index 0000000..7c5965b
--- /dev/null
+++ b/Resources/Public/Icons/Extension.svg
@@ -0,0 +1 @@
+<svg height="100" viewBox="0 0 100 100" width="100" xmlns="http://www.w3.org/2000/svg"><g fill="#a0dcf0" transform="translate(6 1)"><path d="m18 0v9.06l61.836 8.613v65.06l9.164 1.267v-74.105z"/><path d="m0 88.097 71 9.903v-74.098l-71-9.902z"/></g></svg>
diff --git a/Resources/Public/Icons/Overlay/extension.svg b/Resources/Public/Icons/Overlay/extension.svg
new file mode 100644
index 0000000..537358f
--- /dev/null
+++ b/Resources/Public/Icons/Overlay/extension.svg
@@ -0,0 +1,6 @@
+<svg height="100" viewBox="0 0 100 100" width="100" xmlns="http://www.w3.org/2000/svg">
+    <g opacity=".75" fill="#a0dcf0" transform="translate(6 1)">
+        <path d="m18 0v9.06l61.836 8.613v65.06l9.164 1.267v-74.105z"/>
+        <path d="m0 88.097 71 9.903v-74.098l-71-9.902z"/>
+    </g>
+</svg>
diff --git a/Resources/Public/Icons/Wizard/booked-list.svg b/Resources/Public/Icons/Wizard/booked-list.svg
new file mode 100644
index 0000000..a1921eb
--- /dev/null
+++ b/Resources/Public/Icons/Wizard/booked-list.svg
@@ -0,0 +1,14 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16">
+    <path fill="#FFF" d="M1 1h14v14H1V1z"/>
+    <path fill="#999" d="M1 1v14h14V1H1zm1 1h12v12H2V2z"/>
+    <path fill="#B9B9B9" d="M6 3h7v2H6z"/>
+    <path fill="#a0dcf0" d="M3 3h2v2H3z"/>
+    <path fill="#B9B9B9" d="M6 6h7v1H6z"/>
+    <path fill="#a0dcf0" d="M4 6h1v1H4z"/>
+    <path fill="#B9B9B9" d="M8 8h5v1H8z"/>
+    <path fill="#a0dcf0" d="M6 8h1v1H6z"/>
+    <path fill="#B9B9B9" d="M8 10h5v1H8z"/>
+    <path fill="#a0dcf0" d="M6 10h1v1H6z"/>
+    <path fill="#B9B9B9" d="M8 12h5v1H8z"/>
+    <path fill="#a0dcf0" d="M6 12h1v1H6z"/>
+</svg>
diff --git a/composer.json b/composer.json
new file mode 100644
index 0000000..9dd56bc
--- /dev/null
+++ b/composer.json
@@ -0,0 +1,29 @@
+{
+	"name": "slub/slub-profile-booked",
+	"type": "typo3-cms-extension",
+	"description": "SLUB profile service booked rooms extension for TYPO3",
+	"authors": [
+		{
+			"name": "Andreas Pfeiffer",
+			"role": "Developer"
+		}
+	],
+	"version": "0.1.0",
+	"license": "GPL-2.0-or-later",
+	"require": {
+		"typo3/cms-core": "^11"
+	},
+	"replace": {
+		"typo3-ter/slub-profile-booked": "self.version"
+	},
+	"autoload": {
+		"psr-4": {
+			"Slub\\SlubProfileBooked\\": "Classes/"
+		}
+	},
+	"extra": {
+		"typo3/cms": {
+			"extension-key": "slub_profile_booked"
+		}
+	}
+}
diff --git a/ext_conf_template.txt b/ext_conf_template.txt
new file mode 100644
index 0000000..ff60823
--- /dev/null
+++ b/ext_conf_template.txt
@@ -0,0 +1,8 @@
+# cat=API booked; type=string; label=LLL:EXT:slub_profile_booked/Resources/Private/Language/locallang_backend.xlf:extensionConfiguration.requestUri
+requestUri =
+
+# cat=API booked; type=string; label=LLL:EXT:slub_profile_booked/Resources/Private/Language/locallang_backend.xlf:extensionConfiguration.authenticationUsername
+authenticationUsername =
+
+# cat=API booked; type=string; label=LLL:EXT:slub_profile_booked/Resources/Private/Language/locallang_backend.xlf:extensionConfiguration.authenticationPassword
+authenticationPassword =
diff --git a/ext_emconf.php b/ext_emconf.php
new file mode 100644
index 0000000..7601e4a
--- /dev/null
+++ b/ext_emconf.php
@@ -0,0 +1,28 @@
+<?php
+
+$EM_CONF['slub_profile_booked'] = [
+    'title' => 'SLUB profile booked',
+    'description' => 'SLUB profile service booked rooms extension for TYPO3',
+    'category' => 'fe',
+    'author' => 'Andreas Pfeiffer',
+    'author_email' => 'andreas.pfeiffer@e-pixler.com',
+    'author_company' => 'e-pixler',
+    'shy' => '',
+    'priority' => '',
+    'module' => '',
+    'state' => 'stable',
+    'internal' => '',
+    'uploadfolder' => 1,
+    'createDirs' => '',
+    'modify_tables' => '',
+    'clearCacheOnLoad' => 1,
+    'lockType' => '',
+    'version' => '0.1.0',
+    'constraints' => [
+        'depends' => [
+            'typo3' => '11.0.0-11.5.99'
+        ],
+        'conflicts' => [],
+        'suggests' => [],
+    ],
+];
diff --git a/ext_localconf.php b/ext_localconf.php
new file mode 100644
index 0000000..3d931f9
--- /dev/null
+++ b/ext_localconf.php
@@ -0,0 +1,25 @@
+<?php
+
+use Slub\SlubProfileBooked\Controller\BookedController;
+use TYPO3\CMS\Core\Utility\ExtensionManagementUtility;
+use TYPO3\CMS\Extbase\Utility\ExtensionUtility;
+
+defined('TYPO3') || die();
+
+// Add tsconfig page
+ExtensionManagementUtility::addPageTSConfig(
+    '@import "EXT:slub_profile_booked/Configuration/TsConfig/Page.tsconfig"'
+);
+
+// Configure plugin - booked list
+ExtensionUtility::configurePlugin(
+    'SlubProfileBooked',
+    'BookedList',
+    [
+        BookedController::class => 'list'
+    ],
+    [
+        BookedController::class => 'list'
+    ],
+    ExtensionUtility::PLUGIN_TYPE_CONTENT_ELEMENT
+);