diff --git a/Annotation/Model.php b/Annotation/Model.php
new file mode 100644
index 0000000..799914a
--- /dev/null
+++ b/Annotation/Model.php
@@ -0,0 +1,29 @@
+<?php
+
+/*
+ * This file is part of the NelmioApiDocBundle package.
+ *
+ * (c) Nelmio
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Nelmio\ApiDocBundle\Annotation;
+
+use Swagger\Annotations\AbstractAnnotation;
+
+/**
+ * @Annotation
+ */
+final class Model extends AbstractAnnotation
+{
+    public static $_required = ['type'];
+    public static $_parents = [
+        'Swagger\Annotations\Parameter',
+        'Swagger\Annotations\Response',
+        'Swagger\Annotations\Swagger',
+    ];
+
+    public $type;
+}
diff --git a/ApiDocGenerator.php b/ApiDocGenerator.php
index a0f7585..e659f22 100644
--- a/ApiDocGenerator.php
+++ b/ApiDocGenerator.php
@@ -13,20 +13,26 @@ namespace Nelmio\ApiDocBundle;
 
 use EXSyst\Component\Swagger\Swagger;
 use Nelmio\ApiDocBundle\Describer\DescriberInterface;
+use Nelmio\ApiDocBundle\Describer\ModelRegistryAwareInterface;
+use Nelmio\ApiDocBundle\Model\ModelRegistry;
+use Nelmio\ApiDocBundle\ModelDescriber\ModelDescriberInterface;
 use Psr\Cache\CacheItemPoolInterface;
 
 final class ApiDocGenerator
 {
     private $swagger;
     private $describers;
+    private $modelDescribers;
     private $cacheItemPool;
 
     /**
-     * @param DescriberInterface[] $describers
+     * @param DescriberInterface[]      $describers
+     * @param ModelDescriberInterface[] $modelDescribers
      */
-    public function __construct(array $describers, CacheItemPoolInterface $cacheItemPool = null)
+    public function __construct(array $describers, array $modelDescribers, CacheItemPoolInterface $cacheItemPool = null)
     {
         $this->describers = $describers;
+        $this->modelDescribers = $modelDescribers;
         $this->cacheItemPool = $cacheItemPool;
     }
 
@@ -44,9 +50,15 @@ final class ApiDocGenerator
         }
 
         $this->swagger = new Swagger();
+        $modelRegistry = new ModelRegistry($this->modelDescribers, $this->swagger);
         foreach ($this->describers as $describer) {
+            if ($describer instanceof ModelRegistryAwareInterface) {
+                $describer->setModelRegistry($modelRegistry);
+            }
+
             $describer->describe($this->swagger);
         }
+        $modelRegistry->registerDefinitions();
 
         if (isset($item)) {
             $this->cacheItemPool->save($item->set($this->swagger));
diff --git a/DependencyInjection/Compiler/AddModelDescribersPass.php b/DependencyInjection/Compiler/AddModelDescribersPass.php
new file mode 100644
index 0000000..5a4c84c
--- /dev/null
+++ b/DependencyInjection/Compiler/AddModelDescribersPass.php
@@ -0,0 +1,30 @@
+<?php
+
+/*
+ * This file is part of the NelmioApiDocBundle package.
+ *
+ * (c) Nelmio
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Nelmio\ApiDocBundle\DependencyInjection\Compiler;
+
+use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+
+/**
+ * @internal
+ */
+final class AddModelDescribersPass implements CompilerPassInterface
+{
+    use PriorityTaggedServiceTrait;
+
+    public function process(ContainerBuilder $container)
+    {
+        $modelDescribers = $this->findAndSortTaggedServices('nelmio_api_doc.model_describer', $container);
+
+        $container->getDefinition('nelmio_api_doc.generator')->replaceArgument(1, $modelDescribers);
+    }
+}
diff --git a/Describer/DefaultDescriber.php b/Describer/DefaultDescriber.php
index 0b7c8ff..2c803aa 100644
--- a/Describer/DefaultDescriber.php
+++ b/Describer/DefaultDescriber.php
@@ -38,7 +38,7 @@ final class DefaultDescriber implements DescriberInterface
                 $operation = $path->getOperation($method);
 
                 // Default Response
-                if (0 === iterator_count($operation->getResponses())) {
+                if (0 === count($operation->getResponses())) {
                     $defaultResponse = $operation->getResponses()->get('default');
                     $defaultResponse->setDescription('');
                 }
diff --git a/Describer/ModelRegistryAwareInterface.php b/Describer/ModelRegistryAwareInterface.php
new file mode 100644
index 0000000..36bdc9e
--- /dev/null
+++ b/Describer/ModelRegistryAwareInterface.php
@@ -0,0 +1,19 @@
+<?php
+
+/*
+ * This file is part of the NelmioApiDocBundle package.
+ *
+ * (c) Nelmio
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Nelmio\ApiDocBundle\Describer;
+
+use Nelmio\ApiDocBundle\Model\ModelRegistry;
+
+interface ModelRegistryAwareInterface
+{
+    public function setModelRegistry(ModelRegistry $modelRegistry);
+}
diff --git a/Describer/ModelRegistryAwareTrait.php b/Describer/ModelRegistryAwareTrait.php
new file mode 100644
index 0000000..da1ab36
--- /dev/null
+++ b/Describer/ModelRegistryAwareTrait.php
@@ -0,0 +1,24 @@
+<?php
+
+/*
+ * This file is part of the NelmioApiDocBundle package.
+ *
+ * (c) Nelmio
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Nelmio\ApiDocBundle\Describer;
+
+use Nelmio\ApiDocBundle\Model\ModelRegistry;
+
+trait ModelRegistryAwareTrait
+{
+    private $modelRegistry;
+
+    public function setModelRegistry(ModelRegistry $modelRegistry)
+    {
+        $this->modelRegistry = $modelRegistry;
+    }
+}
diff --git a/Describer/RouteDescriber.php b/Describer/RouteDescriber.php
index eb7dca6..70f1d66 100644
--- a/Describer/RouteDescriber.php
+++ b/Describer/RouteDescriber.php
@@ -17,8 +17,10 @@ use Nelmio\ApiDocBundle\Util\ControllerReflector;
 use Symfony\Component\Routing\Route;
 use Symfony\Component\Routing\RouteCollection;
 
-final class RouteDescriber implements DescriberInterface
+final class RouteDescriber implements DescriberInterface, ModelRegistryAwareInterface
 {
+    use ModelRegistryAwareTrait;
+
     private $routeCollection;
     private $controllerReflector;
     private $routeDescribers;
@@ -51,6 +53,10 @@ final class RouteDescriber implements DescriberInterface
             if ($method = $this->controllerReflector->getReflectionMethod($controller)) {
                 // Extract as many informations as possible about this route
                 foreach ($this->routeDescribers as $describer) {
+                    if ($describer instanceof ModelRegistryAwareInterface) {
+                        $describer->setModelRegistry($this->modelRegistry);
+                    }
+
                     $describer->describe($api, $route, $method);
                 }
             }
diff --git a/Describer/SwaggerPhpDescriber.php b/Describer/SwaggerPhpDescriber.php
index 2716a08..5f26d1c 100644
--- a/Describer/SwaggerPhpDescriber.php
+++ b/Describer/SwaggerPhpDescriber.php
@@ -11,37 +11,30 @@
 
 namespace Nelmio\ApiDocBundle\Describer;
 
+use Nelmio\ApiDocBundle\SwaggerPhp\AddDefaults;
+use Nelmio\ApiDocBundle\SwaggerPhp\ModelRegister;
 use Nelmio\ApiDocBundle\SwaggerPhp\OperationResolver;
+use Swagger\Analyser;
 use Swagger\Analysis;
 
-final class SwaggerPhpDescriber extends ExternalDocDescriber
+final class SwaggerPhpDescriber extends ExternalDocDescriber implements ModelRegistryAwareInterface
 {
+    use ModelRegistryAwareTrait;
+
     private $operationResolver;
 
     public function __construct(string $projectPath, bool $overwrite = false)
     {
+        $nelmioNamespace = 'Nelmio\\ApiDocBundle\\';
+        if (!in_array($nelmioNamespace, Analyser::$whitelist)) {
+            Analyser::$whitelist[] = $nelmioNamespace;
+        }
+
         parent::__construct(function () use ($projectPath) {
-            // Ignore notices as the documentation can be completed by other describers
-            $prevHandler = set_error_handler(function ($type, $message, $file, $line, $context) use (&$prevHandler) {
-                if (E_USER_NOTICE === $type || E_USER_WARNING === $type) {
-                    return;
-                }
+            $options = ['processors' => $this->getProcessors()];
+            $annotation = \Swagger\scan($projectPath, $options);
 
-                return null !== $prevHandler && call_user_func($prevHandler, $type, $message, $file, $line, $context);
-            });
-
-            try {
-                $options = [];
-                if (null !== $this->operationResolver) {
-                    $options['processors'] = array_merge([$this->operationResolver], Analysis::processors());
-                }
-
-                $annotation = \Swagger\scan($projectPath, $options);
-
-                return json_decode(json_encode($annotation));
-            } finally {
-                restore_error_handler();
-            }
+            return json_decode(json_encode($annotation));
         }, $overwrite);
     }
 
@@ -53,4 +46,17 @@ final class SwaggerPhpDescriber extends ExternalDocDescriber
     {
         $this->operationResolver = $operationResolver;
     }
+
+    private function getProcessors(): array
+    {
+        $processors = [
+            new AddDefaults(),
+            new ModelRegister($this->modelRegistry),
+        ];
+        if (null !== $this->operationResolver) {
+            $processors[] = $this->operationResolver;
+        }
+
+        return array_merge($processors, Analysis::processors());
+    }
 }
diff --git a/EXSystApiDocBundle.php b/EXSystApiDocBundle.php
new file mode 100644
index 0000000..13ee40a
--- /dev/null
+++ b/EXSystApiDocBundle.php
@@ -0,0 +1,45 @@
+<?php
+
+/*
+ * This file is part of the NelmioApiDocBundle package.
+ *
+ * (c) Nelmio
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Nelmio\ApiDocBundle;
+
+use Nelmio\ApiDocBundle\DependencyInjection\Compiler\AddDescribersPass;
+use Nelmio\ApiDocBundle\DependencyInjection\Compiler\AddModelDescribersPass;
+use Nelmio\ApiDocBundle\DependencyInjection\Compiler\AddRouteDescribersPass;
+use Nelmio\ApiDocBundle\DependencyInjection\EXSystApiDocExtension;
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+use Symfony\Component\HttpKernel\Bundle\Bundle;
+
+final class EXSystApiDocBundle extends Bundle
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function build(ContainerBuilder $container)
+    {
+        $container->addCompilerPass(new AddDescribersPass());
+        $container->addCompilerPass(new AddRouteDescribersPass());
+        $container->addCompilerPass(new AddModelDescribersPass());
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getContainerExtension()
+    {
+        if (null === $this->extension) {
+            $this->extension = new EXSystApiDocExtension();
+        }
+        if ($this->extension) {
+            return $this->extension;
+        }
+    }
+}
diff --git a/Model/Model.php b/Model/Model.php
new file mode 100644
index 0000000..82693fe
--- /dev/null
+++ b/Model/Model.php
@@ -0,0 +1,37 @@
+<?php
+
+/*
+ * This file is part of the NelmioApiDocBundle package.
+ *
+ * (c) Nelmio
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Nelmio\ApiDocBundle\Model;
+
+use Symfony\Component\PropertyInfo\Type;
+
+final class Model
+{
+    private $type;
+
+    public function __construct(Type $type)
+    {
+        $this->type = $type;
+    }
+
+    /**
+     * @return Type|null
+     */
+    public function getType()
+    {
+        return $this->type;
+    }
+
+    public function getHash()
+    {
+        return md5(serialize($this->type));
+    }
+}
diff --git a/Model/ModelRegistry.php b/Model/ModelRegistry.php
new file mode 100644
index 0000000..197a336
--- /dev/null
+++ b/Model/ModelRegistry.php
@@ -0,0 +1,132 @@
+<?php
+
+/*
+ * This file is part of the NelmioApiDocBundle package.
+ *
+ * (c) Nelmio
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Nelmio\ApiDocBundle\Model;
+
+use EXSyst\Component\Swagger\Schema;
+use EXSyst\Component\Swagger\Swagger;
+use Nelmio\ApiDocBundle\Describer\ModelRegistryAwareInterface;
+use Nelmio\ApiDocBundle\ModelDescriber\ModelDescriberInterface;
+use Symfony\Component\PropertyInfo\Type;
+
+final class ModelRegistry
+{
+    private $unregistered = [];
+    private $models = [];
+    private $names = [];
+    private $modelDescribers = [];
+    private $api;
+
+    /**
+     * @param ModelDescriberInterface[] $modelDescribers
+     *
+     * @internal
+     */
+    public function __construct(array $modelDescribers, Swagger $api)
+    {
+        $this->modelDescribers = $modelDescribers;
+        $this->api = $api;
+    }
+
+    public function register(Model $model): string
+    {
+        $hash = $model->getHash();
+        if (isset($this->names[$hash])) {
+            return '#/definitions/'.$this->names[$hash];
+        }
+
+        $this->names[$hash] = $name = $this->generateModelName($model);
+        $this->models[$hash] = $model;
+        $this->unregistered[] = $hash;
+
+        // Reserve the name
+        $this->api->getDefinitions()->get($name);
+
+        return '#/definitions/'.$name;
+    }
+
+    /**
+     * @internal
+     */
+    public function registerDefinitions()
+    {
+        while (count($this->unregistered)) {
+            $tmp = [];
+            foreach ($this->unregistered as $hash) {
+                $tmp[$this->names[$hash]] = $this->models[$hash];
+            }
+            $this->unregistered = [];
+
+            foreach ($tmp as $name => $model) {
+                $schema = null;
+                foreach ($this->modelDescribers as $modelDescriber) {
+                    if ($modelDescriber instanceof ModelRegistryAwareInterface) {
+                        $modelDescriber->setModelRegistry($this);
+                    }
+                    if ($modelDescriber->supports($model)) {
+                        $schema = new Schema();
+                        $modelDescriber->describe($model, $schema);
+
+                        break;
+                    }
+                }
+
+                if (null === $schema) {
+                    throw new \LogicException(sprintf('Schema of type "%s" can\'t be generated, no describer supports it.', $this->typeToString($model->getType())));
+                }
+
+                $this->api->getDefinitions()->set($name, $schema);
+            }
+        }
+    }
+
+    private function generateModelName(Model $model): string
+    {
+        $definitions = $this->api->getDefinitions();
+        $base = $name = $this->getTypeShortName($model->getType());
+        $i = 1;
+        while ($definitions->has($name)) {
+            ++$i;
+            $name = $base.$i;
+        }
+
+        return $name;
+    }
+
+    private function getTypeShortName(Type $type)
+    {
+        if (null !== $type->getCollectionValueType()) {
+            return $this->getTypeShortName($type->getCollectionValueType()).'[]';
+        }
+        if (Type::BUILTIN_TYPE_OBJECT === $type->getBuiltinType()) {
+            $parts = explode('\\', $type->getClassName());
+
+            return end($parts);
+        }
+
+        return $type->getBuiltinType();
+    }
+
+    private function typeToString(Type $type): string
+    {
+        if (Type::BUILTIN_TYPE_OBJECT === $type->getBuiltinType()) {
+            return $type->getClassName();
+        } elseif ($type->isCollection()) {
+            if (null !== $type->getCollectionValueType()) {
+                return $this->typeToString($type->getCollectionValueType()).'[]';
+            } else {
+                return 'mixed[]';
+            }
+        } else {
+            return $type->getBuiltinType();
+        }
+    }
+}
diff --git a/ModelDescriber/CollectionModelDescriber.php b/ModelDescriber/CollectionModelDescriber.php
new file mode 100644
index 0000000..c75d7ee
--- /dev/null
+++ b/ModelDescriber/CollectionModelDescriber.php
@@ -0,0 +1,35 @@
+<?php
+
+/*
+ * This file is part of the NelmioApiDocBundle package.
+ *
+ * (c) Nelmio
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Nelmio\ApiDocBundle\ModelDescriber;
+
+use EXSyst\Component\Swagger\Schema;
+use Nelmio\ApiDocBundle\Describer\ModelRegistryAwareInterface;
+use Nelmio\ApiDocBundle\Describer\ModelRegistryAwareTrait;
+use Nelmio\ApiDocBundle\Model\Model;
+
+class CollectionModelDescriber implements ModelDescriberInterface, ModelRegistryAwareInterface
+{
+    use ModelRegistryAwareTrait;
+
+    public function describe(Model $model, Schema $schema)
+    {
+        $schema->setType('array');
+        $schema->getItems()->setRef(
+            $this->modelRegistry->register(new Model($model->getType()->getCollectionValueType()))
+        );
+    }
+
+    public function supports(Model $model)
+    {
+        return $model->getType()->isCollection() && null !== $model->getType()->getCollectionValueType();
+    }
+}
diff --git a/ModelDescriber/ModelDescriberInterface.php b/ModelDescriber/ModelDescriberInterface.php
new file mode 100644
index 0000000..698226c
--- /dev/null
+++ b/ModelDescriber/ModelDescriberInterface.php
@@ -0,0 +1,22 @@
+<?php
+
+/*
+ * This file is part of the NelmioApiDocBundle package.
+ *
+ * (c) Nelmio
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Nelmio\ApiDocBundle\ModelDescriber;
+
+use EXSyst\Component\Swagger\Schema;
+use Nelmio\ApiDocBundle\Model\Model;
+
+interface ModelDescriberInterface
+{
+    public function describe(Model $model, Schema $schema);
+
+    public function supports(Model $model);
+}
diff --git a/ModelDescriber/ObjectModelDescriber.php b/ModelDescriber/ObjectModelDescriber.php
new file mode 100644
index 0000000..303a756
--- /dev/null
+++ b/ModelDescriber/ObjectModelDescriber.php
@@ -0,0 +1,55 @@
+<?php
+
+/*
+ * This file is part of the NelmioApiDocBundle package.
+ *
+ * (c) Nelmio
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Nelmio\ApiDocBundle\ModelDescriber;
+
+use EXSyst\Component\Swagger\Schema;
+use Nelmio\ApiDocBundle\Describer\ModelRegistryAwareInterface;
+use Nelmio\ApiDocBundle\Describer\ModelRegistryAwareTrait;
+use Nelmio\ApiDocBundle\Model\Model;
+use Symfony\Component\PropertyInfo\PropertyInfoExtractorInterface;
+use Symfony\Component\PropertyInfo\Type;
+
+class ObjectModelDescriber implements ModelDescriberInterface, ModelRegistryAwareInterface
+{
+    use ModelRegistryAwareTrait;
+
+    public function __construct(PropertyInfoExtractorInterface $propertyInfo)
+    {
+        $this->propertyInfo = $propertyInfo;
+    }
+
+    public function describe(Model $model, Schema $schema)
+    {
+        $schema->setType('object');
+        $properties = $schema->getProperties();
+
+        $class = $model->getType()->getClassName();
+        foreach ($this->propertyInfo->getProperties($class) as $propertyName) {
+            $types = $this->propertyInfo->getTypes($class, $propertyName);
+            if (0 === count($types)) {
+                throw new \LogicException(sprintf('The PropertyInfo component was not able to guess the type of %s::$%s', $class, $propertyName));
+            }
+            if (count($types) > 1) {
+                throw new \LogicException(sprintf('Property %s::$%s defines more than one type.', $class, $propertyName));
+            }
+
+            $properties->get($propertyName)->setRef(
+                $this->modelRegistry->register(new Model($types[0]))
+            );
+        }
+    }
+
+    public function supports(Model $model)
+    {
+        return Type::BUILTIN_TYPE_OBJECT === $model->getType()->getBuiltinType();
+    }
+}
diff --git a/ModelDescriber/ScalarModelDescriber.php b/ModelDescriber/ScalarModelDescriber.php
new file mode 100644
index 0000000..bf2c3c5
--- /dev/null
+++ b/ModelDescriber/ScalarModelDescriber.php
@@ -0,0 +1,36 @@
+<?php
+
+/*
+ * This file is part of the NelmioApiDocBundle package.
+ *
+ * (c) Nelmio
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Nelmio\ApiDocBundle\ModelDescriber;
+
+use EXSyst\Component\Swagger\Schema;
+use Nelmio\ApiDocBundle\Model\Model;
+use Symfony\Component\PropertyInfo\Type;
+
+class ScalarModelDescriber implements ModelDescriberInterface
+{
+    private static $supportedTypes = [
+        Type::BUILTIN_TYPE_INT => 'integer',
+        Type::BUILTIN_TYPE_FLOAT => 'float',
+        Type::BUILTIN_TYPE_STRING => 'string',
+    ];
+
+    public function describe(Model $model, Schema $schema)
+    {
+        $type = self::$supportedTypes[$model->getType()->getBuiltinType()];
+        $schema->setType($type);
+    }
+
+    public function supports(Model $model)
+    {
+        return isset(self::$supportedTypes[$model->getType()->getBuiltinType()]);
+    }
+}
diff --git a/NelmioApiDocBundle.php b/NelmioApiDocBundle.php
index 7834209..e356c05 100644
--- a/NelmioApiDocBundle.php
+++ b/NelmioApiDocBundle.php
@@ -12,6 +12,7 @@
 namespace Nelmio\ApiDocBundle;
 
 use Nelmio\ApiDocBundle\DependencyInjection\Compiler\AddDescribersPass;
+use Nelmio\ApiDocBundle\DependencyInjection\Compiler\AddModelDescribersPass;
 use Nelmio\ApiDocBundle\DependencyInjection\Compiler\AddRouteDescribersPass;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\HttpKernel\Bundle\Bundle;
@@ -24,6 +25,7 @@ final class NelmioApiDocBundle extends Bundle
     public function build(ContainerBuilder $container)
     {
         $container->addCompilerPass(new AddDescribersPass());
+        $container->addCompilerPass(new AddModelDescribersPass());
         $container->addCompilerPass(new AddRouteDescribersPass());
     }
 }
diff --git a/Resources/config/api_platform.xml b/Resources/config/api_platform.xml
index 51a15c1..e52e283 100644
--- a/Resources/config/api_platform.xml
+++ b/Resources/config/api_platform.xml
@@ -8,7 +8,7 @@
             <argument type="service" id="nelmio_api_doc.describers.api_platform.documentation" />
             <argument type="service" id="api_platform.swagger.normalizer.documentation" />
 
-            <tag name="nelmio_api_doc.describer" priority="-200" />
+            <tag name="nelmio_api_doc.describer" priority="-100" />
         </service>
 
         <service id="nelmio_api_doc.describers.api_platform.documentation" class="ApiPlatform\Core\Documentation\Documentation" public="false">
diff --git a/Resources/config/services.xml b/Resources/config/services.xml
index 1a7296e..14bc892 100644
--- a/Resources/config/services.xml
+++ b/Resources/config/services.xml
@@ -5,7 +5,8 @@
 
     <services>
         <service id="nelmio_api_doc.generator" class="Nelmio\ApiDocBundle\ApiDocGenerator">
-            <argument type="collection" />
+            <argument type="collection" /> <!-- Describers -->
+            <argument type="collection" /> <!-- Model Describers -->
         </service>
 
         <service id="nelmio_api_doc.controller_reflector" class="Nelmio\ApiDocBundle\Util\ControllerReflector" public="false">
@@ -18,7 +19,6 @@
             <argument type="collection" /> <!-- Path patterns -->
         </service>
 
-
         <service id="nelmio_api_doc.describers.route" class="Nelmio\ApiDocBundle\Describer\RouteDescriber" public="false">
             <argument type="service">
                 <service class="Symfony\Component\Routing\RouteCollection">
@@ -33,16 +33,31 @@
             <argument type="service" id="nelmio_api_doc.controller_reflector" />
             <argument type="collection" />
 
-            <tag name="nelmio_api_doc.describer" priority="-100" />
+            <tag name="nelmio_api_doc.describer" priority="-400" />
         </service>
 
         <service id="nelmio_api_doc.describers.default" class="Nelmio\ApiDocBundle\Describer\DefaultDescriber" public="false">
             <tag name="nelmio_api_doc.describer" priority="-1000" />
         </service>
 
-        <!-- Routing Extractors -->
+        <!-- Routing Describers -->
         <service id="nelmio_api_doc.route_describers.route_metadata" class="Nelmio\ApiDocBundle\RouteDescriber\RouteMetadataDescriber" public="false">
-            <tag name="nelmio_api_doc.route_describer" priority="-100" />
+            <tag name="nelmio_api_doc.route_describer" priority="-300" />
+        </service>
+
+        <!-- Model Describers -->
+        <service id="nelmio_api_doc.model_describers.object" class="Nelmio\ApiDocBundle\ModelDescriber\ObjectModelDescriber" public="false">
+            <argument type="service" id="property_info" />
+
+            <tag name="nelmio_api_doc.model_describer" />
+        </service>
+
+        <service id="nelmio_api_doc.model_describers.collection" class="Nelmio\ApiDocBundle\ModelDescriber\CollectionModelDescriber" public="false">
+            <tag name="nelmio_api_doc.model_describer" />
+        </service>
+
+        <service id="nelmio_api_doc.model_describers.scalar" class="Nelmio\ApiDocBundle\ModelDescriber\ScalarModelDescriber" public="false">
+            <tag name="nelmio_api_doc.model_describer" />
         </service>
     </services>
 
diff --git a/Resources/config/swagger_php.xml b/Resources/config/swagger_php.xml
index 0ef8082..e582117 100644
--- a/Resources/config/swagger_php.xml
+++ b/Resources/config/swagger_php.xml
@@ -10,7 +10,16 @@
               <argument type="service" id="nelmio_api_doc.describers.swagger_php.operation_resolver" />
             </call>
 
-            <tag name="nelmio_api_doc.describer" priority="-300" />
+            <tag name="nelmio_api_doc.describer" priority="-200" />
+        </service>
+
+        <service id="nelmio_api_doc.describers.swagger_php.path_resolver" class="Nelmio\ApiDocBundle\SwaggerPhp\PathResolver" public="false">
+            <argument type="service">
+                <service class="Symfony\Component\Routing\RouteCollection">
+                    <factory service="router" method="getRouteCollection" />
+                </service>
+            </argument>
+            <argument type="service" id="nelmio_api_doc.controller_reflector" />
         </service>
 
         <service id="nelmio_api_doc.describers.swagger_php.operation_resolver" class="Nelmio\ApiDocBundle\SwaggerPhp\OperationResolver" public="false">
diff --git a/SwaggerPhp/AddDefaults.php b/SwaggerPhp/AddDefaults.php
new file mode 100644
index 0000000..2618d70
--- /dev/null
+++ b/SwaggerPhp/AddDefaults.php
@@ -0,0 +1,37 @@
+<?php
+
+/*
+ * This file is part of the NelmioApiDocBundle package.
+ *
+ * (c) Nelmio
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Nelmio\ApiDocBundle\SwaggerPhp;
+
+use Swagger\Analysis;
+use Swagger\Annotations\Info;
+use Swagger\Annotations\Swagger;
+use Swagger\Context;
+
+/**
+ * Add defaults to fix default warnings.
+ *
+ * @internal
+ */
+final class AddDefaults
+{
+    public function __invoke(Analysis $analysis)
+    {
+        if ($analysis->getAnnotationsOfType(Info::class)) {
+            return;
+        }
+        if (($annotations = $analysis->getAnnotationsOfType(Swagger::class)) && null !== $annotations[0]->info) {
+            return;
+        }
+
+        $analysis->addAnnotation(new Info(['title' => '', 'version' => '0.0.0', '_context' => new Context(['generated' => true])]), null);
+    }
+}
diff --git a/SwaggerPhp/ModelRegister.php b/SwaggerPhp/ModelRegister.php
new file mode 100644
index 0000000..84a203c
--- /dev/null
+++ b/SwaggerPhp/ModelRegister.php
@@ -0,0 +1,84 @@
+<?php
+
+/*
+ * This file is part of the NelmioApiDocBundle package.
+ *
+ * (c) Nelmio
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Nelmio\ApiDocBundle\SwaggerPhp;
+
+use Nelmio\ApiDocBundle\Annotation\Model as ModelAnnotation;
+use Nelmio\ApiDocBundle\Model\Model;
+use Nelmio\ApiDocBundle\Model\ModelRegistry;
+use Swagger\Analysis;
+use Swagger\Annotations\Items;
+use Swagger\Annotations\Parameter;
+use Swagger\Annotations\Response;
+use Swagger\Annotations\Schema;
+use Symfony\Component\PropertyInfo\Type;
+
+/**
+ * Resolves the path in SwaggerPhp annotation when needed.
+ *
+ * @internal
+ */
+final class ModelRegister
+{
+    private $modelRegistry;
+
+    public function __construct(ModelRegistry $modelRegistry)
+    {
+        $this->modelRegistry = $modelRegistry;
+    }
+
+    public function __invoke(Analysis $analysis)
+    {
+        foreach ($analysis->annotations as $annotation) {
+            if (!$annotation instanceof ModelAnnotation || $annotation->_context->not('nested')) {
+                continue;
+            }
+
+            if (!is_string($annotation->type)) {
+                // Ignore invalid annotations, they are validated later
+                continue;
+            }
+
+            $parent = $annotation->_context->nested;
+            if (!$parent instanceof Response && !$parent instanceof Parameter && !$parent instanceof Schema) {
+                continue;
+            }
+
+            $annotationClass = Schema::class;
+            if ($parent instanceof Schema) {
+                $annotationClass = Items::class;
+            }
+
+            $parent->merge([new $annotationClass([
+                'ref' => $this->modelRegistry->register(new Model($this->createType($annotation->type))),
+            ])]);
+
+            // It is no longer an unmerged annotation
+            foreach ($parent->_unmerged as $key => $unmerged) {
+                if ($unmerged === $annotation) {
+                    unset($parent->_unmerged[$key]);
+
+                    break;
+                }
+            }
+            $analysis->annotations->detach($annotation);
+        }
+    }
+
+    private function createType(string $type): Type
+    {
+        if ('[]' === substr($type, -2)) {
+            return new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, null, $this->createType(substr($type, 0, -2)));
+        }
+
+        return new Type(Type::BUILTIN_TYPE_OBJECT, false, $type);
+    }
+}
diff --git a/Tests/Describer/SwaggerPhpDescriberTest.php b/Tests/Describer/SwaggerPhpDescriberTest.php
index 788ba65..0102f2e 100644
--- a/Tests/Describer/SwaggerPhpDescriberTest.php
+++ b/Tests/Describer/SwaggerPhpDescriberTest.php
@@ -11,7 +11,9 @@
 
 namespace Nelmio\ApiDocBundle\Tests\Describer;
 
+use EXSyst\Component\Swagger\Swagger;
 use Nelmio\ApiDocBundle\Describer\SwaggerPhpDescriber;
+use Nelmio\ApiDocBundle\Model\ModelRegistry;
 
 class SwaggerPhpDescriberTest extends AbstractDescriberTest
 {
@@ -27,5 +29,6 @@ class SwaggerPhpDescriberTest extends AbstractDescriberTest
     protected function setUp()
     {
         $this->describer = new SwaggerPhpDescriber(__DIR__.'/../Fixtures');
+        $this->describer->setModelRegistry(new ModelRegistry([], new Swagger()));
     }
 }
diff --git a/Tests/Functional/Controller/ApiController.php b/Tests/Functional/Controller/ApiController.php
index 68874b4..f8c62d6 100644
--- a/Tests/Functional/Controller/ApiController.php
+++ b/Tests/Functional/Controller/ApiController.php
@@ -14,6 +14,9 @@ namespace Nelmio\ApiDocBundle\Tests\Functional\Controller;
 use FOS\RestBundle\Controller\Annotations\QueryParam;
 use FOS\RestBundle\Controller\Annotations\RequestParam;
 use Nelmio\ApiDocBundle\Annotation\ApiDoc;
+use Nelmio\ApiDocBundle\Annotation\Model;
+use Nelmio\ApiDocBundle\Tests\Functional\Entity\Dummy;
+use Nelmio\ApiDocBundle\Tests\Functional\Entity\User;
 use Sensio\Bundle\FrameworkExtraBundle\Configuration\Route;
 use Swagger\Annotations as SWG;
 
@@ -35,11 +38,19 @@ class ApiController
 
     /**
      * @Route("/swagger/implicit", methods={"GET", "POST"})
-     * @SWG\Response(response="201", description="Operation automatically detected")
+     * @SWG\Response(
+     *     response="201",
+     *     description="Operation automatically detected",
+     *     @Model(type="Nelmio\ApiDocBundle\Tests\Functional\Entity\User")
+     * )
      * @SWG\Parameter(
      *     name="foo",
-     *     in="query",
-     *     description="This is a parameter"
+     *     in="body",
+     *     description="This is a parameter",
+     *     @SWG\Schema(
+     *         type="array",
+     *         @Model(type="Nelmio\ApiDocBundle\Tests\Functional\Entity\User")
+     *     )
      * )
      */
     public function implicitSwaggerAction()
diff --git a/Tests/Functional/Entity/Dummy.php b/Tests/Functional/Entity/Dummy.php
index ac4399a..f7e22ad 100644
--- a/Tests/Functional/Entity/Dummy.php
+++ b/Tests/Functional/Entity/Dummy.php
@@ -42,11 +42,6 @@ class Dummy
      */
     private $name;
 
-    /**
-     * @var array
-     */
-    private $foo;
-
     public function getId(): int
     {
         return $this->id;
@@ -65,8 +60,4 @@ class Dummy
     public function hasRole(string $role)
     {
     }
-
-    public function setFoo(array $foo = null)
-    {
-    }
 }
diff --git a/Tests/Functional/Entity/User.php b/Tests/Functional/Entity/User.php
new file mode 100644
index 0000000..39fb774
--- /dev/null
+++ b/Tests/Functional/Entity/User.php
@@ -0,0 +1,26 @@
+<?php
+
+/*
+ * This file is part of the NelmioApiDocBundle package.
+ *
+ * (c) Nelmio
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Nelmio\ApiDocBundle\Tests\Functional\Entity;
+
+/**
+ * @author Guilhem N. <egetick@gmail.com>
+ */
+class User
+{
+    public function addUsers(User $user)
+    {
+    }
+
+    public function setDummy(Dummy $dummy)
+    {
+    }
+}
diff --git a/Tests/Functional/FunctionalTest.php b/Tests/Functional/FunctionalTest.php
index 4a5c5e6..94cc167 100644
--- a/Tests/Functional/FunctionalTest.php
+++ b/Tests/Functional/FunctionalTest.php
@@ -11,6 +11,8 @@
 
 namespace Nelmio\ApiDocBundle\Tests\Functional;
 
+use EXSyst\Component\Swagger\Operation;
+use EXSyst\Component\Swagger\Schema;
 use Symfony\Bundle\FrameworkBundle\Test\WebTestCase;
 
 class FunctionalTest extends WebTestCase
@@ -50,11 +52,16 @@ class FunctionalTest extends WebTestCase
 
         $responses = $operation->getResponses();
         $this->assertTrue($responses->has('201'));
-        $this->assertEquals('Operation automatically detected', $responses->get('201')->getDescription());
+        $response = $responses->get('201');
+        $this->assertEquals('Operation automatically detected', $response->getDescription());
+        $this->assertEquals('#/definitions/User', $response->getSchema()->getRef());
 
         $parameters = $operation->getParameters();
-        $this->assertTrue($parameters->has('foo', 'query'));
-        $this->assertEquals('This is a parameter', $parameters->get('foo', 'query')->getDescription());
+        $this->assertTrue($parameters->has('foo', 'body'));
+        $parameter = $parameters->get('foo', 'body');
+
+        $this->assertEquals('This is a parameter', $parameter->getDescription());
+        $this->assertEquals('#/definitions/User', $parameter->getSchema()->getItems()->getRef());
     }
 
     public function implicitSwaggerActionMethodsProvider()
@@ -109,6 +116,27 @@ class FunctionalTest extends WebTestCase
         $operation = $this->getOperation('/api/dummies/{id}', 'get');
     }
 
+    public function testUserModel()
+    {
+        $model = $this->getModel('User');
+        $this->assertEquals('object', $model->getType());
+        $properties = $model->getProperties();
+
+        $this->assertTrue($properties->has('users'));
+        $this->assertEquals('#/definitions/User[]', $properties->get('users')->getRef());
+
+        $this->assertTrue($properties->has('dummy'));
+        $this->assertEquals('#/definitions/Dummy2', $properties->get('dummy')->getRef());
+    }
+
+    public function testUsersModel()
+    {
+        $model = $this->getModel('User[]');
+        $this->assertEquals('array', $model->getType());
+
+        $this->assertEquals('#/definitions/User', $model->getItems()->getRef());
+    }
+
     private function getSwaggerDefinition()
     {
         static::createClient();
@@ -116,12 +144,20 @@ class FunctionalTest extends WebTestCase
         return static::$kernel->getContainer()->get('nelmio_api_doc.generator')->generate();
     }
 
-    private function getOperation($path, $method)
+    private function getModel($name): Schema
+    {
+        $definitions = $this->getSwaggerDefinition()->getDefinitions();
+        $this->assertTrue($definitions->has($name));
+
+        return $definitions->get($name);
+    }
+
+    private function getOperation($path, $method): Operation
     {
         $api = $this->getSwaggerDefinition();
         $paths = $api->getPaths();
 
-        $this->assertTrue($paths->has($path), sprintf('Path "%s" does not exist', $path));
+        $this->assertTrue($paths->has($path), sprintf('Path "%s" does not exist.', $path));
         $action = $paths->get($path);
 
         $this->assertTrue($action->hasOperation($method), sprintf('Operation "%s" for path "%s" does not exist', $path, $method));
diff --git a/Tests/Model/ModelRegistryTest.php b/Tests/Model/ModelRegistryTest.php
new file mode 100644
index 0000000..8ad5a3a
--- /dev/null
+++ b/Tests/Model/ModelRegistryTest.php
@@ -0,0 +1,41 @@
+<?php
+
+/*
+ * This file is part of the NelmioApiDocBundle package.
+ *
+ * (c) Nelmio
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Nelmio\ApiDocBundle\Tests\Model;
+
+use EXSyst\Component\Swagger\Schema;
+use EXSyst\Component\Swagger\Swagger;
+use Nelmio\ApiDocBundle\Model\Model;
+use Nelmio\ApiDocBundle\Model\ModelRegistry;
+use Symfony\Component\PropertyInfo\Type;
+
+class ModelRegistryTest extends \PHPUnit_Framework_TestCase
+{
+    /**
+     * @dataProvider unsupportedTypesProvider
+     */
+    public function testUnsupportedTypeException(Type $type, string $stringType)
+    {
+        $this->setExpectedException('\LogicException', sprintf('Schema of type "%s" can\'t be generated, no describer supports it.', $stringType));
+
+        $registry = new ModelRegistry([], new Swagger());
+        $registry->register(new Model($type));
+        $registry->registerDefinitions();
+    }
+
+    public function unsupportedTypesProvider()
+    {
+        return [
+            [new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true), 'mixed[]'],
+            [new Type(Type::BUILTIN_TYPE_OBJECT, false, self::class), self::class],
+        ];
+    }
+}
diff --git a/composer.json b/composer.json
index 0622946..431a599 100644
--- a/composer.json
+++ b/composer.json
@@ -17,6 +17,7 @@
     "require": {
         "php": "~7.0|~7.1",
         "symfony/framework-bundle": "^2.8|^3.0",
+        "symfony/property-info": "^2.8|^3.0",
         "exsyst/swagger": "~0.2.3"
     },
     "require-dev": {