diff --git a/src/Manticoresearch/Client.php b/src/Manticoresearch/Client.php
index aa9b5e0..e7727ed 100755
--- a/src/Manticoresearch/Client.php
+++ b/src/Manticoresearch/Client.php
@@ -28,7 +28,7 @@
  * @author Adrian Nuta <adrian.nuta@manticoresearch.com>
  * @link https://manticoresearch.com
  */
-class Client
+class Client implements ClientInterface
 {
 	/**
 	 *
diff --git a/src/Manticoresearch/ClientInterface.php b/src/Manticoresearch/ClientInterface.php
new file mode 100644
index 0000000..f58e4b5
--- /dev/null
+++ b/src/Manticoresearch/ClientInterface.php
@@ -0,0 +1,206 @@
+<?php
+
+// Copyright (c) Manticore Software LTD (https://manticoresearch.com)
+//
+// This source code is licensed under the MIT license found in the
+// LICENSE file in the root directory of this source tree.
+
+declare(strict_types=1);
+
+namespace Manticoresearch;
+
+use Manticoresearch\Connection\ConnectionPool;
+
+/**
+ * Interface for Manticore Search client
+ * @package Manticoresearch
+ * @category Manticoresearch
+ * @link https://manticoresearch.com
+ */
+interface ClientInterface
+{
+	/**
+	 * Set hosts configuration
+	 * @param string|array $hosts
+	 */
+	public function setHosts($hosts);
+
+	/**
+	 * Set client configuration
+	 * @param array $config
+	 * @return $this
+	 */
+	public function setConfig(array $config): self;
+
+	/**
+	 * Create client instance from configuration
+	 * @param array $config
+	 * @return Client
+	 */
+	public static function create($config): Client;
+
+	/**
+	 * Create client instance from array configuration
+	 * @param array $config
+	 * @return Client
+	 */
+	public static function createFromArray($config): Client;
+
+	/**
+	 * Get connections
+	 * @return mixed
+	 */
+	public function getConnections();
+
+	/**
+	 * Get connection pool
+	 * @return ConnectionPool
+	 */
+	public function getConnectionPool(): ConnectionPool;
+
+	/**
+	 * Endpoint: search
+	 * @param array $params
+	 * @param bool $obj
+	 * @return array|Response
+	 */
+	public function search(array $params = [], $obj = false);
+
+	/**
+	 * Endpoint: insert
+	 * @param array $params
+	 * @return mixed
+	 */
+	public function insert(array $params = []);
+
+	/**
+	 * Endpoint: replace
+	 * @param array $params
+	 * @return mixed
+	 */
+	public function replace(array $params = []);
+
+	/**
+	 * Endpoint: _update
+	 * @param string $table
+	 * @param int $id
+	 * @param array $params
+	 * @return mixed
+	 */
+	public function partialReplace(string $table, int $id, array $params = []);
+
+	/**
+	 * Endpoint: update
+	 * @param array $params
+	 * @return mixed
+	 */
+	public function update(array $params = []);
+
+	/**
+	 * Endpoint: sql
+	 * @param mixed $params
+	 * @return mixed
+	 */
+	public function sql(...$params);
+
+	/**
+	 * Endpoint: delete
+	 * @param array $params
+	 * @return mixed
+	 */
+	public function delete(array $params = []);
+
+	/**
+	 * Endpoint: pq
+	 * @return \Manticoresearch\Endpoints\Pq
+	 */
+	public function pq(): \Manticoresearch\Endpoints\Pq;
+
+	/**
+	 * Endpoint: tables
+	 * @return Tables
+	 */
+	public function tables(): Tables;
+
+	/**
+	 * Endpoint: nodes
+	 * @return Nodes
+	 */
+	public function nodes(): Nodes;
+
+	/**
+	 * Endpoint: cluster
+	 * @return Cluster
+	 */
+	public function cluster(): Cluster;
+
+	/**
+	 * Return Table object
+	 * @param string|null $name Name of table
+	 * @return Table
+	 */
+	public function table(?string $name = null): Table;
+
+	/**
+	 * Endpoint: bulk
+	 * @param array $params
+	 * @return mixed
+	 */
+	public function bulk(array $params = []);
+
+	/**
+	 * Endpoint: suggest
+	 * @param array $params
+	 * @return mixed
+	 */
+	public function suggest(array $params = []);
+
+	/**
+	 * Endpoint: qsuggest
+	 * @param array $params
+	 * @return mixed
+	 */
+	public function qsuggest(array $params = []);
+
+	/**
+	 * Endpoint: keywords
+	 * @param array $params
+	 * @return mixed
+	 */
+	public function keywords(array $params = []);
+
+	/**
+	 * Endpoint: autocomplete
+	 * @param array $params
+	 * @return mixed
+	 */
+	public function autocomplete(array $params = []);
+
+	/**
+	 * Endpoint: explain query
+	 * @param array $params
+	 * @return mixed
+	 */
+	public function explainQuery(array $params = []);
+
+	/**
+	 * Execute request
+	 * @param Request $request
+	 * @param array $params
+	 * @param string $retryReason
+	 * @return Response
+	 */
+	public function request(Request $request, array $params = [], string $retryReason = ''): Response;
+
+	/**
+	 * Get last response
+	 * @return Response
+	 */
+	public function getLastResponse(): Response;
+
+	/**
+	 * Unset last response
+	 * @return void
+	 */
+	public function unsetLastResponse(): void;
+}