diff --git a/CHANGELOG.md b/CHANGELOG.md
index 77fc0dc..cc2d224 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,7 @@ Updates should follow the [Keep a CHANGELOG](http://keepachangelog.com/) princip
 ### Changed
 * update minimum PHP to version 8.2 (currently still supported version) + update league/fractal library [BC]
 * change Inject from PHPDoc format to native PHP attribute
+* [Reverted] Remove BC addApi register method now requires ApiHandlerInterface as second parameter instead of string or service name
 
 ## 3.2.0
 
diff --git a/src/Api.php b/src/Api.php
index 8435789..06a117f 100644
--- a/src/Api.php
+++ b/src/Api.php
@@ -17,7 +17,7 @@ public function __construct(
         private EndpointInterface $endpoint,
         private ApiHandlerInterface $handler,
         private ApiAuthorizationInterface $authorization,
-        ?RateLimitInterface $rateLimit = null
+        ?RateLimitInterface $rateLimit = null,
     ) {
         $this->rateLimit = $rateLimit ?: new NoRateLimit();
     }
diff --git a/src/ApiDecider.php b/src/ApiDecider.php
index 4220bc6..712eddf 100644
--- a/src/ApiDecider.php
+++ b/src/ApiDecider.php
@@ -4,6 +4,7 @@
 
 namespace Tomaj\NetteApi;
 
+use Nette\DI\Container;
 use Nette\Http\Response;
 use Tomaj\NetteApi\Authorization\ApiAuthorizationInterface;
 use Tomaj\NetteApi\Authorization\NoAuthorization;
@@ -15,11 +16,16 @@
 
 class ApiDecider
 {
-    /** @var Api[] */
-    private $apis = [];
+    /** @var ApiHolder[] */
+    private array $apis = [];
 
     private ?ApiHandlerInterface $globalPreflightHandler = null;
 
+    public function __construct(
+        private Container $container,
+    ) {
+    }
+
     /**
      * Get api handler that match input method, version, package and apiAction.
      * If decider cannot find handler for given handler, returns defaults.
@@ -62,9 +68,9 @@ public function enableGlobalPreflight(?CorsPreflightHandlerInterface $corsHandle
     /**
      * Register new api handler
      */
-    public function addApi(EndpointInterface $endpointIdentifier, ApiHandlerInterface $handler, ApiAuthorizationInterface $apiAuthorization, ?RateLimitInterface $rateLimit = null): self
+    public function addApi(EndpointInterface $endpointIdentifier, ApiHandlerInterface|string $handler, ApiAuthorizationInterface $apiAuthorization, ?RateLimitInterface $rateLimit = null): self
     {
-        $this->apis[] = new Api($endpointIdentifier, $handler, $apiAuthorization, $rateLimit);
+        $this->apis[] = new ApiHolder($endpointIdentifier, $handler, $apiAuthorization, $rateLimit);
         return $this;
     }
 
@@ -84,8 +90,26 @@ public function getApis(): array
         return $apis;
     }
 
-    private function getHandler(Api $api): ApiHandlerInterface
+    private function getHandler(ApiHolder $api): ApiHandlerInterface
     {
-        return $api->getHandler();
+        $handler = $api->getHandler();
+        if (!is_string($handler)) {
+            return $handler;
+        }
+
+        if (str_starts_with($handler, '@')) {
+            /**
+             * @var ApiHandlerInterface $apiHandler
+             */
+            $apiHandler = $this->container->getByName(substr($handler, 1));
+            return $apiHandler;
+        }
+
+        /**
+         * @var ApiHandlerInterface $apiHandler
+         * @var class-string<object> $handler
+         */
+        $apiHandler = $this->container->getByType($handler);
+        return $apiHandler;
     }
 }
diff --git a/src/ApiHolder.php b/src/ApiHolder.php
new file mode 100644
index 0000000..b57771a
--- /dev/null
+++ b/src/ApiHolder.php
@@ -0,0 +1,50 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tomaj\NetteApi;
+
+use Tomaj\NetteApi\Authorization\ApiAuthorizationInterface;
+use Tomaj\NetteApi\Handlers\ApiHandlerInterface;
+use Tomaj\NetteApi\RateLimit\NoRateLimit;
+use Tomaj\NetteApi\RateLimit\RateLimitInterface;
+
+class ApiHolder
+{
+    private RateLimitInterface $rateLimit;
+
+    /**
+     * Allows to define api with handler as a string.
+     * Alows asynchronous loading of handlers if handler is defined as a string.
+     * ApiDecider will try to load the handler from container.
+     * Should not be used outside of ApiDecider.
+     */
+    public function __construct(
+        private EndpointInterface $endpoint,
+        private ApiHandlerInterface|string $handler,
+        private ApiAuthorizationInterface $authorization,
+        ?RateLimitInterface $rateLimit = null,
+    ) {
+        $this->rateLimit = $rateLimit ?: new NoRateLimit();
+    }
+
+    public function getEndpoint(): EndpointInterface
+    {
+        return $this->endpoint;
+    }
+
+    public function getHandler(): ApiHandlerInterface|string
+    {
+        return $this->handler;
+    }
+
+    public function getAuthorization(): ApiAuthorizationInterface
+    {
+        return $this->authorization;
+    }
+
+    public function getRateLimit(): RateLimitInterface
+    {
+        return $this->rateLimit;
+    }
+}