diff --git a/src/main/java/fr/adrienbrault/idea/symfony2plugin/extension/ServiceParameterCollector.java b/src/main/java/fr/adrienbrault/idea/symfony2plugin/extension/ServiceParameterCollector.java
new file mode 100644
index 000000000..7c2ad500b
--- /dev/null
+++ b/src/main/java/fr/adrienbrault/idea/symfony2plugin/extension/ServiceParameterCollector.java
@@ -0,0 +1,13 @@
+package fr.adrienbrault.idea.symfony2plugin.extension;
+
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * @author Daniel Espendiller <daniel@espendiller.net>
+ */
+public interface ServiceParameterCollector {
+    /**
+     * Warning expect high traffic, collector needs to be highly optimized
+     */
+    void collectIds(@NotNull ServiceParameterCollectorParameter.Id parameter);
+}
diff --git a/src/main/java/fr/adrienbrault/idea/symfony2plugin/extension/ServiceParameterCollectorParameter.java b/src/main/java/fr/adrienbrault/idea/symfony2plugin/extension/ServiceParameterCollectorParameter.java
new file mode 100644
index 000000000..ba50bcb97
--- /dev/null
+++ b/src/main/java/fr/adrienbrault/idea/symfony2plugin/extension/ServiceParameterCollectorParameter.java
@@ -0,0 +1,41 @@
+package fr.adrienbrault.idea.symfony2plugin.extension;
+
+import com.intellij.openapi.project.Project;
+import fr.adrienbrault.idea.symfony2plugin.dic.ContainerParameter;
+import fr.adrienbrault.idea.symfony2plugin.dic.container.SerializableService;
+import fr.adrienbrault.idea.symfony2plugin.dic.container.ServiceInterface;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.Collection;
+
+/**
+ * @author Daniel Espendiller <daniel@espendiller.net>
+ */
+public class ServiceParameterCollectorParameter {
+    public static class Id {
+
+        @NotNull
+        private final Project project;
+
+        @NotNull
+        private final Collection<ContainerParameter> ids;
+
+        public Id(@NotNull Project project, @NotNull Collection<ContainerParameter> ids) {
+            this.project = project;
+            this.ids = ids;
+        }
+
+        @NotNull
+        public Project getProject() {
+            return project;
+        }
+
+        public void add(@NotNull ContainerParameter id) {
+            this.ids.add(id);
+        }
+
+        public void addAll(@NotNull Collection<ContainerParameter> names) {
+            this.ids.addAll(names);
+        }
+    }
+}
diff --git a/src/main/java/fr/adrienbrault/idea/symfony2plugin/stubs/ContainerCollectionResolver.java b/src/main/java/fr/adrienbrault/idea/symfony2plugin/stubs/ContainerCollectionResolver.java
index b9738b410..0bc3a3fb4 100644
--- a/src/main/java/fr/adrienbrault/idea/symfony2plugin/stubs/ContainerCollectionResolver.java
+++ b/src/main/java/fr/adrienbrault/idea/symfony2plugin/stubs/ContainerCollectionResolver.java
@@ -14,6 +14,8 @@
 import fr.adrienbrault.idea.symfony2plugin.dic.container.ServiceSerializable;
 import fr.adrienbrault.idea.symfony2plugin.dic.container.dict.ContainerBuilderCall;
 import fr.adrienbrault.idea.symfony2plugin.extension.ServiceCollectorParameter;
+import fr.adrienbrault.idea.symfony2plugin.extension.ServiceParameterCollector;
+import fr.adrienbrault.idea.symfony2plugin.extension.ServiceParameterCollectorParameter;
 import fr.adrienbrault.idea.symfony2plugin.stubs.cache.FileIndexCaches;
 import fr.adrienbrault.idea.symfony2plugin.stubs.indexes.ContainerBuilderStubIndex;
 import fr.adrienbrault.idea.symfony2plugin.stubs.indexes.ContainerParameterStubIndex;
@@ -41,6 +43,10 @@ public class ContainerCollectionResolver {
         "fr.adrienbrault.idea.symfony2plugin.extension.ServiceCollector"
     );
 
+    private static final ExtensionPointName<fr.adrienbrault.idea.symfony2plugin.extension.ServiceParameterCollector> EXTENSIONS_PARAMETER = new ExtensionPointName<>(
+        "fr.adrienbrault.idea.symfony2plugin.extension.ServiceParameterCollector"
+    );
+
     public static Collection<String> getServiceNames(@NotNull Project project) {
         return ServiceCollector.create(project).getNames();
     }
@@ -456,6 +462,21 @@ private Map<String, ContainerParameter> getParameters() {
                 this.containerParameterMap.put(parameterName, new ContainerParameter(parameterName, true));
             }
 
+            // Extension points
+            ServiceParameterCollectorParameter.Id parameter = null;
+            Collection<ContainerParameter> exps = new ArrayList<>();
+            for (ServiceParameterCollector parameterCollector : EXTENSIONS_PARAMETER.getExtensions()) {
+                if(parameter == null) {
+                    parameter = new ServiceParameterCollectorParameter.Id(project, exps);
+                }
+
+                parameterCollector.collectIds(parameter);
+            }
+
+            for (ContainerParameter extParameter: exps) {
+                this.containerParameterMap.put(extParameter.getName(), extParameter);
+            }
+
             return this.containerParameterMap;
         }
 
diff --git a/src/main/resources/META-INF/plugin.xml b/src/main/resources/META-INF/plugin.xml
index 48fe1f8d5..543d103b3 100644
--- a/src/main/resources/META-INF/plugin.xml
+++ b/src/main/resources/META-INF/plugin.xml
@@ -548,6 +548,7 @@
         <extensionPoint name="extension.RoutingLoader" interface="fr.adrienbrault.idea.symfony2plugin.extension.RoutingLoader"/>
         <extensionPoint name="extension.CompiledServiceBuilderFactory" interface="fr.adrienbrault.idea.symfony2plugin.extension.CompiledServiceBuilderFactory"/>
         <extensionPoint name="extension.ServiceCollector" interface="fr.adrienbrault.idea.symfony2plugin.extension.ServiceCollector"/>
+        <extensionPoint name="extension.ServiceParameterCollector" interface="fr.adrienbrault.idea.symfony2plugin.extension.ServiceParameterCollector"/>
         <extensionPoint name="extension.ServiceDefinitionLocator" interface="fr.adrienbrault.idea.symfony2plugin.extension.ServiceDefinitionLocator"/>
         <extensionPoint name="extension.TwigVariableCollector" interface="fr.adrienbrault.idea.symfony2plugin.templating.variable.TwigFileVariableCollector"/>
     </extensionPoints>