diff --git a/renderers/web_core/src/v0_9/processing/message-processor.test.ts b/renderers/web_core/src/v0_9/processing/message-processor.test.ts
index 9217f5313..e02fa0b3d 100644
--- a/renderers/web_core/src/v0_9/processing/message-processor.test.ts
+++ b/renderers/web_core/src/v0_9/processing/message-processor.test.ts
@@ -643,6 +643,31 @@ describe('MessageProcessor', () => {
     }, /Surface not found for message: unknown-s/);
   });
 
+  describe('processMessages wrapper', () => {
+    it('processes a list of messages', () => {
+      processor.processMessages({
+        messages: [
+          {
+            version: 'v0.9',
+            createSurface: {
+              surfaceId: 's1',
+              catalogId: 'test-catalog',
+            },
+          },
+          {
+            version: 'v0.9',
+            createSurface: {
+              surfaceId: 's2',
+              catalogId: 'test-catalog',
+            },
+          },
+        ],
+      });
+      assert.ok(processor.model.getSurface('s1'));
+      assert.ok(processor.model.getSurface('s2'));
+    });
+  });
+
   it('resolves paths correctly via resolvePath', () => {
     assert.strictEqual(processor.resolvePath('/foo', '/bar'), '/foo');
     assert.strictEqual(processor.resolvePath('foo', '/bar'), '/bar/foo');
diff --git a/renderers/web_core/src/v0_9/processing/message-processor.ts b/renderers/web_core/src/v0_9/processing/message-processor.ts
index 75c61a5a7..ecf00b112 100644
--- a/renderers/web_core/src/v0_9/processing/message-processor.ts
+++ b/renderers/web_core/src/v0_9/processing/message-processor.ts
@@ -27,6 +27,8 @@ import {
   UpdateComponentsMessage,
   UpdateDataModelMessage,
   DeleteSurfaceMessage,
+  A2uiMessageList,
+  A2uiMessageListWrapper,
 } from '../schema/server-to-client.js';
 import {
   A2uiClientCapabilities,
@@ -222,12 +224,13 @@ export class MessageProcessor<T extends ComponentApi> {
   }
 
   /**
-   * Processes a list of messages.
+   * Processes a list of messages or a messages wrapper.
    *
-   * @param messages The messages to process.
+   * @param messages The messages or messages wrapper to process.
    */
-  processMessages(messages: A2uiMessage[]): void {
-    for (const message of messages) {
+  processMessages(messages: A2uiMessage[] | A2uiMessageListWrapper): void {
+    const messageList = Array.isArray(messages) ? messages : messages.messages;
+    for (const message of messageList) {
       this.processMessage(message);
     }
   }
diff --git a/renderers/web_core/src/v0_9/schema/client-to-server.ts b/renderers/web_core/src/v0_9/schema/client-to-server.ts
index 893947ab7..a6d62cdc0 100644
--- a/renderers/web_core/src/v0_9/schema/client-to-server.ts
+++ b/renderers/web_core/src/v0_9/schema/client-to-server.ts
@@ -125,3 +125,18 @@ export type A2uiClientAction = z.infer<typeof A2uiClientActionSchema>;
 export type A2uiClientError = z.infer<typeof A2uiClientErrorSchema>;
 export type A2uiClientMessage = z.infer<typeof A2uiClientMessageSchema>;
 export type A2uiClientDataModel = z.infer<typeof A2uiClientDataModelSchema>;
+
+export const A2uiClientMessageListSchema = z
+  .array(A2uiClientMessageSchema)
+  .describe('A list of client messages.');
+
+export type A2uiClientMessageList = z.infer<typeof A2uiClientMessageListSchema>;
+
+export const A2uiClientMessageListWrapperSchema = z
+  .object({
+    messages: A2uiClientMessageListSchema,
+  })
+  .strict()
+  .describe('An object wrapping a list of client messages.');
+
+export type A2uiClientMessageListWrapper = z.infer<typeof A2uiClientMessageListWrapperSchema>;
\ No newline at end of file
diff --git a/renderers/web_core/src/v0_9/schema/server-to-client.ts b/renderers/web_core/src/v0_9/schema/server-to-client.ts
index 55337e970..31cad3bdb 100644
--- a/renderers/web_core/src/v0_9/schema/server-to-client.ts
+++ b/renderers/web_core/src/v0_9/schema/server-to-client.ts
@@ -143,3 +143,19 @@ export type A2uiMessage =
   | UpdateComponentsMessage
   | UpdateDataModelMessage
   | DeleteSurfaceMessage;
+
+export const A2uiMessageListSchema = z
+  .array(A2uiMessageSchema)
+  .describe('A list of messages.');
+
+export type A2uiMessageList = z.infer<typeof A2uiMessageListSchema>;
+
+export const A2uiMessageListWrapperSchema = z
+  .object({
+    messages: A2uiMessageListSchema,
+  })
+  .strict()
+  .describe('An object wrapping a list of messages.');
+
+export type A2uiMessageListWrapper = z.infer<typeof A2uiMessageListWrapperSchema>;
+