diff --git a/README.md b/README.md
index 418771a..c1def47 100644
--- a/README.md
+++ b/README.md
@@ -135,6 +135,9 @@ framework:
             'Setono\MetaConversionsApiBundle\Message\Command\SendEvent': async
 ```
 
+Every command the bundle dispatches implements
+`Setono\MetaConversionsApiBundle\Message\Command\CommandInterface`, so you can route them as a group instead.
+
 With a transport, Messenger also retries a failed send and moves it to the failure transport when it keeps failing.
 
 What ends up in the transport is the finished payload: the user data is already normalised and hashed by the SDK, and
@@ -249,6 +252,20 @@ final class AddCustomerToConversionsApiEvent
 You can also replace a step instead of adding to it: alias `PixelProviderInterface`, `FbpContextInterface` or
 `FbcContextInterface` to your own service, or register a listener above the corresponding populate priority.
 
+### Passing context to your own listeners
+
+The second constructor argument of `ConversionsApiEventRaised` carries anything your listeners need but that must
+never be sent to Meta, such as the order the event was raised for. The bundle never reads it.
+
+```php
+$this->eventDispatcher->dispatch(new ConversionsApiEventRaised($event, ['order' => $order]));
+
+// in a listener
+if ($event->hasContext('order')) {
+    $order = $event->getContext('order');
+}
+```
+
 ### Why did my event not show up?
 
 Every listener that drops an event says so at debug level on the `setono_meta_conversions_api` Monolog channel: the
diff --git a/UPGRADE.md b/UPGRADE.md
index cacb97b..655d82b 100644
--- a/UPGRADE.md
+++ b/UPGRADE.md
@@ -75,6 +75,15 @@ anything to `framework.messenger`. `SendEvent` is dispatched on your application
   `?ConsentContextInterface $consentContext` and `bool $consentEnabled` / `bool $clientSideEnabled` /
   `bool $serverSideEnabled` arguments. Adapt subclasses, decorators and custom service definitions.
 
+## Removed container parameters
+
+`setono_meta_conversions_api.client_side.enabled` and `setono_meta_conversions_api.server_side.enabled` are gone. No
+service used them once the subscribers became conditional, and whether a side is enabled is visible from whether its
+services exist. The `consent.*`, `pixels`, `cookies.*`, `filters.*` and `test_event_code.*` parameters are unchanged.
+
+`ConversionsApiEventRaised::$event` and `::$context` are now `readonly`. The `Event` object itself stays mutable,
+which is what enrichment listeners need, but the properties can no longer be swapped out. `getContext()` is new.
+
 ## Cookies
 
 New `cookies` options:
diff --git a/src/DependencyInjection/SetonoMetaConversionsApiExtension.php b/src/DependencyInjection/SetonoMetaConversionsApiExtension.php
index 49aff52..37f9102 100644
--- a/src/DependencyInjection/SetonoMetaConversionsApiExtension.php
+++ b/src/DependencyInjection/SetonoMetaConversionsApiExtension.php
@@ -34,8 +34,6 @@ public function load(array $configs, ContainerBuilder $container): void
 
         $container->setParameter('setono_meta_conversions_api.consent.enabled', $config['consent']['enabled']);
         $container->setParameter('setono_meta_conversions_api.consent.category', $config['consent']['category']);
-        $container->setParameter('setono_meta_conversions_api.client_side.enabled', $config['client_side']['enabled']);
-        $container->setParameter('setono_meta_conversions_api.server_side.enabled', $config['server_side']['enabled']);
         $container->setParameter('setono_meta_conversions_api.pixels', $config['pixels']);
         $container->setParameter('setono_meta_conversions_api.filters.user_agent', $config['filters']['user_agent']);
 
diff --git a/src/Event/ConversionsApiEventRaised.php b/src/Event/ConversionsApiEventRaised.php
index 1d914aa..c708b1b 100644
--- a/src/Event/ConversionsApiEventRaised.php
+++ b/src/Event/ConversionsApiEventRaised.php
@@ -49,9 +49,13 @@ final class ConversionsApiEventRaised extends StoppableEvent
     public const PRIORITY_SEND = -1000;
 
     /**
-     * @param array<string, mixed> $context
+     * @param Event $event The event that will be rendered client side and sent server side. Listeners are expected
+     *                     to mutate it, which is how enrichment works
+     * @param array<string, mixed> $context Anything your own listeners need but that must not be sent to Meta, for
+     *                                      instance the order or the customer the event was raised for. The bundle
+     *                                      never reads it
      */
-    public function __construct(public Event $event, public array $context = [])
+    public function __construct(public readonly Event $event, public readonly array $context = [])
     {
     }
 
@@ -59,4 +63,9 @@ public function hasContext(string $key): bool
     {
         return array_key_exists($key, $this->context);
     }
+
+    public function getContext(string $key, mixed $default = null): mixed
+    {
+        return $this->context[$key] ?? $default;
+    }
 }
diff --git a/src/Message/Command/CommandInterface.php b/src/Message/Command/CommandInterface.php
index bce05c8..4e19073 100644
--- a/src/Message/Command/CommandInterface.php
+++ b/src/Message/Command/CommandInterface.php
@@ -4,6 +4,14 @@
 
 namespace Setono\MetaConversionsApiBundle\Message\Command;
 
+/**
+ * Implemented by every command the bundle dispatches, so they can be routed as a group:
+ *
+ * framework:
+ *     messenger:
+ *         routing:
+ *             'Setono\MetaConversionsApiBundle\Message\Command\CommandInterface': async
+ */
 interface CommandInterface
 {
 }
diff --git a/tests/Integration/DependencyInjection/SetonoMetaConversionsApiExtensionTest.php b/tests/Integration/DependencyInjection/SetonoMetaConversionsApiExtensionTest.php
index ea945dc..6b0db05 100644
--- a/tests/Integration/DependencyInjection/SetonoMetaConversionsApiExtensionTest.php
+++ b/tests/Integration/DependencyInjection/SetonoMetaConversionsApiExtensionTest.php
@@ -43,8 +43,6 @@ public function it_sets_parameters(): void
 
         $this->assertContainerBuilderHasParameter('setono_meta_conversions_api.consent.enabled', false);
         $this->assertContainerBuilderHasParameter('setono_meta_conversions_api.consent.category', DefaultConsents::CONSENT_MARKETING);
-        $this->assertContainerBuilderHasParameter('setono_meta_conversions_api.client_side.enabled', true);
-        $this->assertContainerBuilderHasParameter('setono_meta_conversions_api.server_side.enabled', true);
         $this->assertContainerBuilderHasParameter('setono_meta_conversions_api.pixels', []);
         $this->assertContainerBuilderHasParameter('setono_meta_conversions_api.filters.user_agent', []);
         $this->assertContainerBuilderHasParameter('setono_meta_conversions_api.test_event_code.value', null);
diff --git a/tests/Unit/Event/ConversionsApiEventRaisedTest.php b/tests/Unit/Event/ConversionsApiEventRaisedTest.php
index 049f303..a555e32 100644
--- a/tests/Unit/Event/ConversionsApiEventRaisedTest.php
+++ b/tests/Unit/Event/ConversionsApiEventRaisedTest.php
@@ -51,6 +51,16 @@ public function it_has_context(): void
         self::assertFalse($event->hasContext('customer'));
     }
 
+    #[Test]
+    public function it_returns_context(): void
+    {
+        $event = new ConversionsApiEventRaised(new Event(Event::EVENT_VIEW_CONTENT), ['order' => 1]);
+
+        self::assertSame(1, $event->getContext('order'));
+        self::assertNull($event->getContext('customer'));
+        self::assertSame('fallback', $event->getContext('customer', 'fallback'));
+    }
+
     /**
      * The documented pipeline only holds as long as the bundle's own listeners keep their relative order, so this
      * pins it down. It is the contract integrators position their own listeners against