diff --git a/DependencyInjection/Configuration.php b/DependencyInjection/Configuration.php
index e88d4e8..8c18d39 100644
--- a/DependencyInjection/Configuration.php
+++ b/DependencyInjection/Configuration.php
@@ -23,7 +23,8 @@ class Configuration implements ConfigurationInterface
             ->root('nelmio_api_doc')
             ->children()
                 ->scalarNode('name')->defaultValue('API documentation')->end()
-            ;
+                ->scalarNode('sandbox_target')->defaultValue('/app_dev.php')->end()
+            ->end();
 
         return $treeBuilder;
     }
diff --git a/DependencyInjection/NelmioApiDocExtension.php b/DependencyInjection/NelmioApiDocExtension.php
index 63c4107..0aad910 100644
--- a/DependencyInjection/NelmioApiDocExtension.php
+++ b/DependencyInjection/NelmioApiDocExtension.php
@@ -29,6 +29,7 @@ class NelmioApiDocExtension extends Extension
         $config = $processor->processConfiguration($configuration, $configs);
 
         $container->setParameter('nelmio_api_doc.api_name', $config['name']);
+        $container->setParameter('nelmio_api_doc.api_sandbox_target', $config['sandbox_target']);
 
         $loader = new XmlFileLoader($container, new FileLocator(__DIR__.'/../Resources/config'));
         $loader->load('formatters.xml');
diff --git a/Extractor/ApiDocExtractor.php b/Extractor/ApiDocExtractor.php
index abd761b..42ef1ef 100644
--- a/Extractor/ApiDocExtractor.php
+++ b/Extractor/ApiDocExtractor.php
@@ -200,7 +200,7 @@ class ApiDocExtractor
             }
         }
 
-        $route->addOptions(array('_paramDocs' => $paramDocs));
+        $route->setOptions(array_merge($route->getOptions(), array('_paramDocs' => $paramDocs)));
 
         return array('annotation' => $annotation, 'route' => $route);
     }
diff --git a/Formatter/HtmlFormatter.php b/Formatter/HtmlFormatter.php
index 170004c..90480ee 100644
--- a/Formatter/HtmlFormatter.php
+++ b/Formatter/HtmlFormatter.php
@@ -20,6 +20,11 @@ class HtmlFormatter extends AbstractFormatter
      */
     private $apiName;
 
+    /**
+     * @var string
+     */
+    private $sandboxTarget;
+
     /**
      * @var \Symfony\Component\Templating\EngineInterface
      */
@@ -33,6 +38,14 @@ class HtmlFormatter extends AbstractFormatter
         $this->apiName = $apiName;
     }
 
+    /**
+     * @param string $sandboxTarget
+     */
+    public function setSandboxTarget($sandboxTarget)
+    {
+        $this->sandboxTarget = $sandboxTarget;
+    }
+
     /**
      * @param EngineInterface $engine
      */
@@ -69,9 +82,10 @@ class HtmlFormatter extends AbstractFormatter
     private function getGlobalVars()
     {
         return array(
-            'apiName'   => $this->apiName,
-            'date'      => date(DATE_RFC822),
-            'css'       => file_get_contents(__DIR__ . '/../Resources/public/css/screen.css'),
+            'apiName'       => $this->apiName,
+            'sandboxTarget' => $this->sandboxTarget,
+            'date'          => date(DATE_RFC822),
+            'css'           => file_get_contents(__DIR__ . '/../Resources/public/css/screen.css'),
         );
     }
 }
diff --git a/Resources/config/formatters.xml b/Resources/config/formatters.xml
index 4e00a7a..1bf12c9 100644
--- a/Resources/config/formatters.xml
+++ b/Resources/config/formatters.xml
@@ -30,6 +30,9 @@
             <call method="setApiName">
                 <argument>%nelmio_api_doc.api_name%</argument>
             </call>
+            <call method="setSandboxTarget">
+                <argument>%nelmio_api_doc.api_sandbox_target%</argument>
+            </call>
         </service>
     </services>
 
diff --git a/Resources/public/css/screen.css b/Resources/public/css/screen.css
index acb7767..733f351 100644
--- a/Resources/public/css/screen.css
+++ b/Resources/public/css/screen.css
@@ -1302,3 +1302,60 @@ body ul#resources li.resource ul.endpoints li.endpoint ul.operations li.operatio
 #header a {
   text-decoration: none;
 }
+
+
+/** sandbox */
+.pane:not(.selected) {
+  display: none;
+}
+
+.result pre {
+  border: none;
+  padding: 10px;
+  font-size: 0.9em;
+  overflow: auto;
+}
+
+.tabs li {
+  display: inline;
+  float: left;
+  margin: 10px;
+  cursor: pointer;
+}
+
+.tabs li.selected {
+  font-weight: bold;
+}
+
+.panes {
+  clear: both;
+  border-top: 1px solid #C3D9EC;
+}
+
+.pane.sandbox {
+  border: 1px solid #C3D9EC;
+  border-top: none;
+  padding: 10px;
+}
+
+.pane.sandbox legend {
+  margin-bottom: 5px;
+}
+
+.remove {
+  cursor: pointer;
+}
+
+.pane.sandbox .result {
+  display: none;
+}
+
+.parameters {
+  float: left;
+  width: 50%;
+}
+
+.buttons {
+  clear: both;
+  padding-top: 10px;
+}
diff --git a/Resources/views/layout.html.twig b/Resources/views/layout.html.twig
index 3ef872c..ff715e3 100644
--- a/Resources/views/layout.html.twig
+++ b/Resources/views/layout.html.twig
@@ -6,10 +6,12 @@
         <meta content="IE=edge,chrome=1" http-equiv="X-UA-Compatible" />
         <title>{{ apiName }}</title>
         <link href="http://fonts.googleapis.com/css?family=Droid+Sans:400,700" rel="stylesheet" type="text/css" />
+        <link href="http://google-code-prettify.googlecode.com/svn/trunk/src/prettify.css" rel="stylesheet" type="text/css"></script>
         <style type="text/css">
             {{ css|raw }}
         </style>
         <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js" type="text/javascript"></script>
+        <script src="http://google-code-prettify.googlecode.com/svn/trunk/src/prettify.js" type="text/javascript"></script>
     </head>
     <body>
         <div id="header">
@@ -27,6 +29,129 @@
             $('.toggler').click(function() {
                 $(this).next().slideToggle('slow');
             });
+
+            $('.tabs li').click(function() {
+                var contentGroup = $(this).parents('.content');
+
+                $('.pane.selected', contentGroup).removeClass('selected');
+                $('.pane.' + $(this).data('pane'), contentGroup).addClass('selected');
+
+                $('li', $(this).parent()).removeClass('selected');
+                $(this).addClass('selected');
+            });
+
+
+
+            var prettifyResponse = function(text) {
+                try {
+                    var data = typeof text === 'string' ? JSON.parse(text) : text;
+                    text = JSON.stringify(data, undefined, ' ');
+                } catch (err) {
+                }
+
+                // HTML encode the result
+                return $('<div>').text(text).html();
+            };
+
+            var displayFinalUrl = function(xhr, method, url, container) {
+                container.html(method + ' ' + url);
+            };
+
+            var displayResponseData = function(xhr, container) {
+                container.removeClass('prettyprinted');
+
+                container.html(prettifyResponse(xhr.responseText));
+                prettyPrint && prettyPrint();
+            };
+
+            var displayResponseHeaders = function(xhr, container) {
+                var text = xhr.status + ' ' + xhr.statusText + "\n\n";
+                text += xhr.getAllResponseHeaders();
+
+                container.html(text);
+            };
+
+            var displayResponse = function(xhr, method, url, result_container) {
+                displayFinalUrl(xhr, method, url, $('.url', result_container));
+                displayResponseData(xhr, $('.response', result_container));
+                displayResponseHeaders(xhr, $('.headers', result_container));
+
+                result_container.show();
+            };
+
+            $('.pane.sandbox form').submit(function() {
+                var url = $(this).attr('action'),
+                    method = $(this).attr('method'),
+                    self = this,
+                    params = {
+                        _format: 'json' // default format if not overriden in the form
+                    },
+                    headers = {},
+                    result_container = $('.result', $(this).parent());
+
+                // retrieve all the parameters to send
+                $('.parameters .tuple', $(this)).each(function() {
+                  var key, value;
+
+                  key = $('.key', $(this)).val();
+                  value = $('.value', $(this)).val();
+
+                  if (value) {
+                    params[key] = value;
+                  }
+                });
+
+                // retrieve the additional headers to send
+                $('.headers .tuple', $(this)).each(function() {
+                  var key, value;
+
+                  key = $('.key', $(this)).val();
+                  value = $('.value', $(this)).val();
+
+                  if (value) {
+                    headers[key] = value;
+                  }
+                });
+
+                // fix parameters in URL
+                for (var key in $.extend({}, params)) {
+                    if (url.indexOf('{' + key + '}') !== -1) {
+                      url = url.replace('{' + key + '}', params[key]);
+                      delete params[key];
+                    }
+                };
+
+                // disable all the fiels and buttons
+                $('input, button', $(this)).attr('disabled', 'disabled');
+
+                // and trigger the API call
+                $.ajax({
+                  url: '{{ sandboxTarget }}' + url,
+                  type: method,
+                  data: params,
+                  headers: headers,
+                  complete: function(xhr) {
+                      displayResponse(xhr, method, url, result_container);
+
+                      // and enable them back
+                      $('input, button', $(self)).removeAttr('disabled');
+                  }
+                });
+
+                return false;
+            });
+
+            $('.pane.sandbox').on('click', '.add', function() {
+                var html = $(this).parents('.pane').find('.tuple_template').html();
+
+                $(this).before(html);
+
+                return false;
+            });
+
+            $('.pane.sandbox').on('click', '.remove', function() {
+                $(this).parent().remove();
+            });
         </script>
     </body>
 </html>
diff --git a/Resources/views/method.html.twig b/Resources/views/method.html.twig
index c3860a3..88f2384 100644
--- a/Resources/views/method.html.twig
+++ b/Resources/views/method.html.twig
@@ -1,92 +1,157 @@
 <li class="{{ data.method|lower }} operation">
     <div class="heading toggler">
-    <h3>
-        <span class="http_method">
-            <a>{{ data.method|upper }}</a>
-        </span>
-        <span class="path">
-            {{ data.uri }}
-        </span>
-    </h3>
-    <ul class="options">
-        {% if data.description is defined %}
-            <li>{{ data.description }}</li>
-        {% endif %}
-    </ul>
+      <h3>
+          <span class="http_method">
+              <a>{{ data.method|upper }}</a>
+          </span>
+          <span class="path">
+              {{ data.uri }}
+          </span>
+      </h3>
+      <ul class="options">
+          {% if data.description is defined %}
+              <li>{{ data.description }}</li>
+          {% endif %}
+      </ul>
     </div>
+
     <div class="content" style="display: {% if displayContent  is defined and displayContent == true %}display{% else %}none{% endif %};">
-    {% if data.requirements is defined  and data.requirements is not empty %}
-        <h4>Requirements</h4>
-        <table class="fullwidth">
-            <thead>
-                <tr>
-                    <th>Name</th>
-                    <th>Value</th>
-                    <th>Type</th>
-                    <th>Description</th>
-                </tr>
-            </thead>
-            <tbody>
-                {% for name, infos in data.requirements %}
+      <ul class="tabs">
+          <li class="selected" data-pane="content">Documentation</li>
+          <li data-pane="sandbox">Sandbox</li>
+      </ul>
+
+      <div class="panes">
+        <div class="pane content selected">
+        {% if data.requirements is defined  and data.requirements is not empty %}
+            <h4>Requirements</h4>
+            <table class="fullwidth">
+                <thead>
+                    <tr>
+                        <th>Name</th>
+                        <th>Value</th>
+                        <th>Type</th>
+                        <th>Description</th>
+                    </tr>
+                </thead>
+                <tbody>
+                    {% for name, infos in data.requirements %}
+                        <tr>
+                            <td>{{ name }}</td>
+                            <td>{{ infos.value }}</td>
+                            <td>{{ infos.type }}</td>
+                            <td>{{ infos.description }}</td>
+                        </tr>
+                    {% endfor %}
+                </tbody>
+            </table>
+        {% endif %}
+
+        {% if data.filters is defined and data.filters is not empty %}
+            <h4>Filters</h4>
+            <table class="fullwidth">
+                <thead>
+                    <tr>
+                        <th>Name</th>
+                        <th>Information</th>
+                    </tr>
+                </thead>
+                <tbody>
+                {% for name, infos in data.filters %}
                     <tr>
                         <td>{{ name }}</td>
-                        <td>{{ infos.value }}</td>
-                        <td>{{ infos.type }}</td>
-                        <td>{{ infos.description }}</td>
+                        <td>
+                            <ul>
+                            {% for key, value in infos %}
+                                <li><em>{{ key }}</em> : {{ value|json_encode|trim('"') }}</li>
+                            {% endfor %}
+                            </ul>
+                        </td>
                     </tr>
                 {% endfor %}
-            </tbody>
-        </table>
-    {% endif %}
+                </tbody>
+            </table>
+        {% endif %}
 
-    {% if data.filters is defined and data.filters is not empty %}
-        <h4>Filters</h4>
-        <table class="fullwidth">
-            <thead>
-                <tr>
-                    <th>Name</th>
-                    <th>Information</th>
-                </tr>
-            </thead>
-            <tbody>
-            {% for name, infos in data.filters %}
-                <tr>
-                    <td>{{ name }}</td>
-                    <td>
-                        <ul>
-                        {% for key, value in infos %}
-                            <li><em>{{ key }}</em> : {{ value|json_encode|trim('"') }}</li>
+        {% if data.parameters is defined and data.parameters is not empty %}
+            <h4>Parameters</h4>
+            <table class='fullwidth'>
+                <thead>
+                    <tr>
+                        <th>Parameter</th>
+                        <th>Type</th>
+                        <th>Required?</th>
+                        <th>Description</th>
+                    </tr>
+                </thead>
+                <tbody>
+                    {% for name, infos in data.parameters %}
+                        <tr>
+                            <td>{{ name }}</td>
+                            <td>{{ infos.dataType }}</td>
+                            <td>{{ infos.required ? 'true' : 'false' }}</td>
+                            <td>{{ infos.description }}</td>
+                        </tr>
+                    {% endfor %}
+                </tbody>
+            </table>
+        {% endif %}
+        </div>
+
+        <div class="pane sandbox">
+            <form method="{{ data.method|upper }}" action="{{ data.uri }}">
+                <fieldset class="parameters">
+                    <legend>Parameters</legend>
+                    {% if data.filters is defined %}
+                        {% for name, infos in data.filters %}
+                            <p class="tuple">
+                                <input type="text" class="key" value="{{ name }}" placeholder="Key" />
+                                <span>=</span>
+                                <input type="text" class="value" placeholder="{% if infos.description is defined %}{{ infos.description }}{% else %}Value{% endif %}" /> <span class="remove">-</span>
+                            </p>
                         {% endfor %}
-                        </ul>
-                    </td>
-                </tr>
-            {% endfor %}
-            </tbody>
-        </table>
-    {% endif %}
+                    {% endif %}
 
-    {% if data.parameters is defined and data.parameters is not empty %}
-        <h4>Parameters</h4>
-        <table class='fullwidth'>
-            <thead>
-                <tr>
-                    <th>Parameter</th>
-                    <th>Type</th>
-                    <th>Required?</th>
-                    <th>Description</th>
-                </tr>
-            </thead>
-            <tbody>
-                {% for name, infos in data.parameters %}
-                    <tr>
-                        <td>{{ name }}</td>
-                        <td>{{ infos.dataType }}</td>
-                        <td>{{ infos.required ? 'true' : 'false' }}</td>
-                        <td>{{ infos.description }}</td>
-                    </tr>
-                {% endfor %}
-            </tbody>
-        </table>
-    {% endif %}
+                    <button class="add">New parameter</button>
+                </fieldset>
+
+                <fieldset class="headers">
+                    <legend>Headers</legend>
+
+                      <p class="tuple">
+                          <input type="text" class="key" placeholder="Key" />
+                          <span>=</span>
+                          <input type="text" class="value" placeholder="Value" /> <span class="remove">-</span>
+                      </p>
+
+                    <button class="add">New header</button>
+                </fieldset>
+
+                <div class="buttons">
+
+                    <input type="submit" value="Try!" />
+                </div>
+            </form>
+
+            <script type="text/x-tmpl" class="tuple_template">
+              <p class="tuple">
+                  <input type="text" class="key" placeholder="Key" />
+                  <span>=</span>
+                  <input type="text" class="value" placeholder="Value" /> <span class="remove">-</span>
+              </p>
+            </script>
+
+            <div class="result">
+                <h4>Request URL</h4>
+                <pre class="url"></pre>
+
+                <h4>Response Body</h4>
+                <pre class="response prettyprint"></pre>
+
+                <h4>Response headers</h4>
+                <pre class="headers"></pre>
+            </div>
+        </div>
+      </div>
     </div>
 </li>
diff --git a/Tests/Fixtures/app/config/default.yml b/Tests/Fixtures/app/config/default.yml
index d159f8d..1ba6505 100644
--- a/Tests/Fixtures/app/config/default.yml
+++ b/Tests/Fixtures/app/config/default.yml
@@ -11,7 +11,7 @@ framework:
     session:
         auto_start:     true
         storage_id:     session.storage.mock_file
-    profiler: { only_exceptions: false }
+    profiler:      { only_exceptions: false }
     templating:    { engines: ['twig'] }
 
 # Twig Configuration