diff --git a/api/modules/session/controllers/SessionController.php b/api/modules/session/controllers/SessionController.php
index 1784917..583b5a0 100644
--- a/api/modules/session/controllers/SessionController.php
+++ b/api/modules/session/controllers/SessionController.php
@@ -4,9 +4,12 @@ namespace api\modules\session\controllers;
 use api\controllers\ApiController;
 use api\modules\session\exceptions\ForbiddenOperationException;
 use api\modules\session\exceptions\SessionServerException;
+use api\modules\session\models\HasJoinedForm;
 use api\modules\session\models\JoinForm;
 use api\modules\session\models\protocols\LegacyJoin;
+use api\modules\session\models\protocols\ModernHasJoined;
 use api\modules\session\models\protocols\ModernJoin;
+use common\models\Textures;
 use Yii;
 use yii\web\Response;
 
@@ -57,4 +60,38 @@ class SessionController extends ApiController {
         return 'OK';
     }
 
+    public function actionHasJoined() {
+        Yii::$app->response->format = Response::FORMAT_JSON;
+
+        $data = Yii::$app->request->get();
+        $protocol = new ModernHasJoined($data['username'] ?? '', $data['serverId'] ?? '');
+        $hasJoinedForm = new HasJoinedForm($protocol);
+        $account = $hasJoinedForm->hasJoined();
+        $textures = new Textures($account);
+
+        return $textures->getMinecraftResponse();
+    }
+
+    public function actionHasJoinedLegacy() {
+        Yii::$app->response->format = Response::FORMAT_RAW;
+
+        $data = Yii::$app->request->get();
+        $protocol = new ModernHasJoined($data['user'] ?? '', $data['serverId'] ?? '');
+        $hasJoinedForm = new HasJoinedForm($protocol);
+        try {
+            $hasJoinedForm->hasJoined();
+        } catch (SessionServerException $e) {
+            Yii::$app->response->statusCode = $e->statusCode;
+            if ($e instanceof ForbiddenOperationException) {
+                $message = 'NO';
+            } else {
+                $message = $e->getMessage();
+            }
+
+            return $message;
+        }
+
+        return 'YES';
+    }
+
 }
diff --git a/api/modules/session/models/HasJoinedForm.php b/api/modules/session/models/HasJoinedForm.php
new file mode 100644
index 0000000..622ce71
--- /dev/null
+++ b/api/modules/session/models/HasJoinedForm.php
@@ -0,0 +1,52 @@
+<?php
+namespace api\modules\session\models;
+
+use api\modules\session\exceptions\ForbiddenOperationException;
+use api\modules\session\exceptions\IllegalArgumentException;
+use api\modules\session\models\protocols\HasJoinedInterface;
+use api\modules\session\Module as Session;
+use common\models\Account;
+use yii\base\ErrorException;
+use yii\base\Model;
+
+class HasJoinedForm extends Model {
+
+    private $protocol;
+
+    public function __construct(HasJoinedInterface $protocol, array $config = []) {
+        $this->protocol = $protocol;
+        parent::__construct($config);
+    }
+
+    public function hasJoined() : Account {
+        if (!$this->protocol->validate()) {
+            throw new IllegalArgumentException();
+        }
+
+        $serverId = $this->protocol->getServerId();
+        $username = $this->protocol->getUsername();
+
+        Session::info(
+            "Server with server_id = '{$serverId}' trying to verify has joined user with username = '{$username}'."
+        );
+
+        $joinModel = SessionModel::find($username, $serverId);
+        if ($joinModel === null) {
+            Session::error("Not found join operation for username = '{$username}'.");
+            throw new ForbiddenOperationException('Invalid token.');
+        }
+
+        $joinModel->delete();
+        $account = $joinModel->getAccount();
+        if ($account === null) {
+            throw new ErrorException('Account must exists');
+        }
+
+        Session::info(
+            "User with username = '{$username}' successfully verified by server with server_id = '{$serverId}'."
+        );
+
+        return $account;
+    }
+
+}
diff --git a/api/modules/session/models/JoinForm.php b/api/modules/session/models/JoinForm.php
index d7e9e17..e0ac1de 100644
--- a/api/modules/session/models/JoinForm.php
+++ b/api/modules/session/models/JoinForm.php
@@ -18,9 +18,9 @@ use yii\web\UnauthorizedHttpException;
 
 class JoinForm extends Model {
 
-    private $accessToken;
-    private $selectedProfile;
-    private $serverId;
+    public $accessToken;
+    public $selectedProfile;
+    public $serverId;
 
     /**
      * @var Account|null
diff --git a/api/modules/session/models/SessionModel.php b/api/modules/session/models/SessionModel.php
index 1efd748..da43391 100644
--- a/api/modules/session/models/SessionModel.php
+++ b/api/modules/session/models/SessionModel.php
@@ -1,6 +1,7 @@
 <?php
 namespace api\modules\session\models;
 
+use common\models\Account;
 use Yii;
 
 class SessionModel {
@@ -50,7 +51,15 @@ class SessionModel {
         return Yii::$app->redis->executeCommand('DEL', [static::buildKey($this->username, $this->serverId)]);
     }
 
-    protected static function buildKey($username, $serverId) {
+    /**
+     * @return Account|null
+     * TODO: после перехода на PHP 7.1 установить тип как ?Account
+     */
+    public function getAccount() {
+        return Account::findOne(['username' => $this->username]);
+    }
+
+    protected static function buildKey($username, $serverId) : string {
         return md5('minecraft:join-server:' . mb_strtolower($username) . ':' . $serverId);
     }
 
diff --git a/api/modules/session/models/protocols/BaseHasJoined.php b/api/modules/session/models/protocols/BaseHasJoined.php
new file mode 100644
index 0000000..b10ce49
--- /dev/null
+++ b/api/modules/session/models/protocols/BaseHasJoined.php
@@ -0,0 +1,31 @@
+<?php
+namespace api\modules\session\models\protocols;
+
+use yii\validators\RequiredValidator;
+
+abstract class BaseHasJoined implements HasJoinedInterface {
+
+    private $username;
+    private $serverId;
+
+    public function __construct(string $username, string $serverId) {
+        $this->username = $username;
+        $this->serverId = $serverId;
+    }
+
+    public function getUsername() : string {
+        return $this->username;
+    }
+
+    public function getServerId() : string {
+        return $this->serverId;
+    }
+
+    public function validate() : bool {
+        $validator = new RequiredValidator();
+
+        return $validator->validate($this->username)
+            && $validator->validate($this->serverId);
+    }
+
+}
diff --git a/api/modules/session/models/protocols/HasJoinedInterface.php b/api/modules/session/models/protocols/HasJoinedInterface.php
new file mode 100644
index 0000000..96a051a
--- /dev/null
+++ b/api/modules/session/models/protocols/HasJoinedInterface.php
@@ -0,0 +1,12 @@
+<?php
+namespace api\modules\session\models\protocols;
+
+interface HasJoinedInterface {
+
+    public function getUsername() : string;
+
+    public function getServerId() : string;
+
+    public function validate() : bool;
+
+}
diff --git a/api/modules/session/models/protocols/LegacyHasJoined.php b/api/modules/session/models/protocols/LegacyHasJoined.php
new file mode 100644
index 0000000..567eeb3
--- /dev/null
+++ b/api/modules/session/models/protocols/LegacyHasJoined.php
@@ -0,0 +1,6 @@
+<?php
+namespace api\modules\session\models\protocols;
+
+class LegacyHasJoined extends BaseHasJoined {
+
+}
diff --git a/api/modules/session/models/protocols/ModernHasJoined.php b/api/modules/session/models/protocols/ModernHasJoined.php
new file mode 100644
index 0000000..8d6584f
--- /dev/null
+++ b/api/modules/session/models/protocols/ModernHasJoined.php
@@ -0,0 +1,6 @@
+<?php
+namespace api\modules\session\models\protocols;
+
+class ModernHasJoined extends BaseHasJoined {
+
+}
diff --git a/autocompletion.php b/autocompletion.php
index c3fcedf..68407f1 100644
--- a/autocompletion.php
+++ b/autocompletion.php
@@ -19,6 +19,7 @@ class Yii extends \yii\BaseYii {
  * @property \yii\swiftmailer\Mailer $mailer
  * @property \yii\redis\Connection $redis
  * @property \common\components\RabbitMQ\Component $amqp
+ * @property \GuzzleHttp\Client $guzzle
  */
 abstract class BaseApplication extends yii\base\Application {
 }
diff --git a/common/components/SkinSystem/Api.php b/common/components/SkinSystem/Api.php
new file mode 100644
index 0000000..14bbfd1
--- /dev/null
+++ b/common/components/SkinSystem/Api.php
@@ -0,0 +1,29 @@
+<?php
+namespace common\components\SkinSystem;
+
+use GuzzleHttp\Client as GuzzleClient;
+use Yii;
+
+class Api {
+
+    const BASE_DOMAIN = 'http://skinsystem.ely.by';
+
+    public function textures($username) : array {
+        $response = $this->getClient()->get($this->getBuildUrl('/textures/' . $username));
+        $textures = json_decode($response->getBody(), true);
+
+        return $textures;
+    }
+
+    protected function getBuildUrl(string $url) : string {
+        return self::BASE_DOMAIN . $url;
+    }
+
+    /**
+     * @return GuzzleClient
+     */
+    protected function getClient() : GuzzleClient {
+        return Yii::$app->guzzle;
+    }
+
+}
diff --git a/common/config/main.php b/common/config/main.php
index 92eb468..6ef7bfe 100644
--- a/common/config/main.php
+++ b/common/config/main.php
@@ -23,6 +23,9 @@ return [
         'amqp' => [
             'class' => \common\components\RabbitMQ\Component::class,
         ],
+        'guzzle' => [
+            'class' => \GuzzleHttp\Client::class,
+        ],
     ],
     'aliases' => [
         '@bower' => '@vendor/bower-asset',
diff --git a/common/models/Textures.php b/common/models/Textures.php
new file mode 100644
index 0000000..761e227
--- /dev/null
+++ b/common/models/Textures.php
@@ -0,0 +1,71 @@
+<?php
+namespace common\models;
+
+use common\components\SkinSystem\Api as SkinSystemApi;
+
+class Textures {
+
+    public $displayElyMark = true;
+
+    /**
+     * @var Account
+     */
+    protected $account;
+
+    public function __construct(Account $account) {
+        $this->account = $account;
+    }
+
+    public function getMinecraftResponse() {
+        $response =  [
+            'name' => $this->account->username,
+            'id' => str_replace('-', '', $this->account->uuid),
+            'properties' => [
+                [
+                    'name' => 'textures',
+                    'signature' => 'Cg==',
+                    'value' => $this->getTexturesValue(),
+                ],
+            ],
+        ];
+
+        if ($this->displayElyMark) {
+            $response['ely'] = true;
+        }
+
+        return $response;
+    }
+
+    public function getTexturesValue($encrypted = true) {
+        $array = [
+            'timestamp' => time() + 60 * 60 * 24 * 2,
+            'profileId' => str_replace('-', '', $this->account->uuid),
+            'profileName' => $this->account->username,
+            'textures' => $this->getTextures(),
+        ];
+
+        if ($this->displayElyMark) {
+            $array['ely'] = true;
+        }
+
+        if (!$encrypted) {
+            return $array;
+        } else {
+            return $this->encrypt($array);
+        }
+    }
+
+    public function getTextures() {
+        $api = new SkinSystemApi();
+        return $api->textures($this->account->username);
+    }
+
+    public static function encrypt(array $data) {
+        return base64_encode(stripcslashes(json_encode($data)));
+    }
+
+    public static function decrypt($string, $assoc = true) {
+        return json_decode(base64_decode($string), $assoc);
+    }
+
+}
diff --git a/tests/codeception/api/_pages/SessionServerRoute.php b/tests/codeception/api/_pages/SessionServerRoute.php
index e40c3fd..d136aac 100644
--- a/tests/codeception/api/_pages/SessionServerRoute.php
+++ b/tests/codeception/api/_pages/SessionServerRoute.php
@@ -18,4 +18,14 @@ class SessionServerRoute extends BasePage {
         $this->actor->sendGET($this->getUrl(), $params);
     }
 
+    public function hasJoined(array $params) {
+        $this->route = ['sessionserver/session/has-joined'];
+        $this->actor->sendGET($this->getUrl(), $params);
+    }
+
+    public function hasJoinedLegacy(array $params) {
+        $this->route = ['sessionserver/session/has-joined-legacy'];
+        $this->actor->sendGET($this->getUrl(), $params);
+    }
+
 }
diff --git a/tests/codeception/api/functional.suite.yml b/tests/codeception/api/functional.suite.yml
index 49ff5d6..4669215 100644
--- a/tests/codeception/api/functional.suite.yml
+++ b/tests/codeception/api/functional.suite.yml
@@ -6,6 +6,7 @@ modules:
         - tests\codeception\common\_support\FixtureHelper
         - Redis
         - AMQP
+        - Asserts
         - REST:
             depends: Yii2
     config:
diff --git a/tests/codeception/api/functional/_steps/SessionServerSteps.php b/tests/codeception/api/functional/_steps/SessionServerSteps.php
new file mode 100644
index 0000000..6bcb3fe
--- /dev/null
+++ b/tests/codeception/api/functional/_steps/SessionServerSteps.php
@@ -0,0 +1,38 @@
+<?php
+namespace tests\codeception\api\functional\_steps;
+
+use common\models\OauthScope as S;
+use Faker\Provider\Uuid;
+use tests\codeception\api\_pages\SessionServerRoute;
+
+class SessionServerSteps extends \tests\codeception\api\FunctionalTester {
+
+    public function amJoined($byLegacy = false) {
+        $oauthSteps = new OauthSteps($this->scenario);
+        $accessToken = $oauthSteps->getAccessToken([S::MINECRAFT_SERVER_SESSION]);
+        $route = new SessionServerRoute($this);
+        $serverId = Uuid::uuid();
+        $username = 'Admin';
+
+        if ($byLegacy) {
+            $route->joinLegacy([
+                'sessionId' => 'token:' . $accessToken . ':' . 'df936908-b2e1-544d-96f8-2977ec213022',
+                'user' => $username,
+                'serverId' => $serverId,
+            ]);
+
+            $this->canSeeResponseEquals('OK');
+        } else {
+            $route->join([
+                'accessToken' => $accessToken,
+                'selectedProfile' => 'df936908-b2e1-544d-96f8-2977ec213022',
+                'serverId' => $serverId,
+            ]);
+
+            $this->canSeeResponseContainsJson(['id' => 'OK']);
+        }
+
+        return [$username, $serverId];
+    }
+
+}
diff --git a/tests/codeception/api/functional/sessionserver/HasJoinedCest.php b/tests/codeception/api/functional/sessionserver/HasJoinedCest.php
new file mode 100644
index 0000000..682099a
--- /dev/null
+++ b/tests/codeception/api/functional/sessionserver/HasJoinedCest.php
@@ -0,0 +1,83 @@
+<?php
+namespace tests\codeception\api\functional\sessionserver;
+
+use Faker\Provider\Uuid;
+use tests\codeception\api\_pages\SessionServerRoute;
+use tests\codeception\api\functional\_steps\SessionServerSteps;
+use tests\codeception\api\FunctionalTester;
+
+class HasJoinedCest {
+
+    /**
+     * @var SessionServerRoute
+     */
+    private $route;
+
+    public function _before(FunctionalTester $I) {
+        $this->route = new SessionServerRoute($I);
+    }
+
+    public function hasJoined(SessionServerSteps $I) {
+        $I->wantTo('check hasJoined user to some server');
+        list($username, $serverId) = $I->amJoined();
+
+        $this->route->hasJoined([
+            'username' => $username,
+            'serverId' => $serverId,
+        ]);
+        $I->seeResponseCodeIs(200);
+        $I->seeResponseIsJson();
+        $I->canSeeResponseContainsJson([
+            'name' => $username,
+            'id' => 'df936908b2e1544d96f82977ec213022',
+            'ely' => true,
+            'properties' => [
+                [
+                    'name' => 'textures',
+                    'signature' => 'Cg==',
+                ],
+            ],
+        ]);
+        $I->canSeeResponseJsonMatchesJsonPath('$.properties[0].value');
+        $value = json_decode($I->grabResponse(), true)['properties'][0]['value'];
+        $decoded = json_decode(base64_decode($value), true);
+        $I->assertArrayHasKey('timestamp', $decoded);
+        $I->assertArrayHasKey('textures', $decoded);
+        $I->assertEquals('df936908b2e1544d96f82977ec213022', $decoded['profileId']);
+        $I->assertEquals('Admin', $decoded['profileName']);
+        $I->assertTrue($decoded['ely']);
+        $textures = $decoded['textures'];
+        $I->assertArrayHasKey('SKIN', $textures);
+        $skinTextures = $textures['SKIN'];
+        $I->assertArrayHasKey('url', $skinTextures);
+        $I->assertArrayHasKey('hash', $skinTextures);
+    }
+
+    public function wrongArguments(FunctionalTester $I) {
+        $I->wantTo('get error on wrong amount of arguments');
+        $this->route->hasJoined([
+            'wrong' => 'argument',
+        ]);
+        $I->canSeeResponseCodeIs(400);
+        $I->canSeeResponseIsJson();
+        $I->canSeeResponseContainsJson([
+            'error' => 'IllegalArgumentException',
+            'errorMessage' => 'credentials can not be null.',
+        ]);
+    }
+
+    public function hasJoinedWithNoJoinOperation(FunctionalTester $I) {
+        $I->wantTo('hasJoined to some server without join call');
+        $this->route->hasJoined([
+            'username' => 'some-username',
+            'serverId' => Uuid::uuid(),
+        ]);
+        $I->seeResponseCodeIs(401);
+        $I->seeResponseIsJson();
+        $I->canSeeResponseContainsJson([
+            'error' => 'ForbiddenOperationException',
+            'errorMessage' => 'Invalid token.',
+        ]);
+    }
+
+}
diff --git a/tests/codeception/api/functional/sessionserver/HasJoinedLegacyCest.php b/tests/codeception/api/functional/sessionserver/HasJoinedLegacyCest.php
new file mode 100644
index 0000000..b0133ac
--- /dev/null
+++ b/tests/codeception/api/functional/sessionserver/HasJoinedLegacyCest.php
@@ -0,0 +1,51 @@
+<?php
+namespace tests\codeception\api\functional\sessionserver;
+
+use Faker\Provider\Uuid;
+use tests\codeception\api\_pages\SessionServerRoute;
+use tests\codeception\api\functional\_steps\SessionServerSteps;
+use tests\codeception\api\FunctionalTester;
+
+class HasJoinedLegacyCest {
+
+    /**
+     * @var SessionServerRoute
+     */
+    private $route;
+
+    public function _before(FunctionalTester $I) {
+        $this->route = new SessionServerRoute($I);
+    }
+
+    public function hasJoined(SessionServerSteps $I) {
+        $I->wantTo('test hasJoined user to some server by legacy version');
+        list($username, $serverId) = $I->amJoined(true);
+
+        $this->route->hasJoinedLegacy([
+            'user' => $username,
+            'serverId' => $serverId,
+        ]);
+        $I->seeResponseCodeIs(200);
+        $I->canSeeResponseEquals('YES');
+    }
+
+    public function wrongArguments(FunctionalTester $I) {
+        $I->wantTo('get error on wrong amount of arguments');
+        $this->route->hasJoinedLegacy([
+            'wrong' => 'argument',
+        ]);
+        $I->canSeeResponseCodeIs(400);
+        $I->canSeeResponseEquals('credentials can not be null.');
+    }
+
+    public function hasJoinedWithNoJoinOperation(FunctionalTester $I) {
+        $I->wantTo('hasJoined by legacy version to some server without join call');
+        $this->route->hasJoinedLegacy([
+            'user' => 'random-username',
+            'serverId' => Uuid::uuid(),
+        ]);
+        $I->seeResponseCodeIs(401);
+        $I->canSeeResponseEquals('NO');
+    }
+
+}