diff --git a/src/vs/workbench/contrib/chat/test/common/chatRequestParser.test.ts b/src/vs/workbench/contrib/chat/test/common/chatRequestParser.test.ts
index 1f00d288001..4e1a265bebe 100644
--- a/src/vs/workbench/contrib/chat/test/common/chatRequestParser.test.ts
+++ b/src/vs/workbench/contrib/chat/test/common/chatRequestParser.test.ts
@@ -115,7 +115,7 @@ suite('ChatRequestParser', () => {
 	});
 
 	const getAgentWithSlashCommands = (slashCommands: IChatAgentCommand[]) => {
-		return { id: 'agent', name: 'agent', extensionId: nullExtensionDescription.identifier, extensionPublisher: '', locations: [ChatAgentLocation.Panel], metadata: {}, slashCommands } satisfies IChatAgentData;
+		return { id: 'agent', name: 'agent', extensionId: nullExtensionDescription.identifier, extensionPublisher: '', extensionDisplayName: '', locations: [ChatAgentLocation.Panel], metadata: {}, slashCommands } satisfies IChatAgentData;
 	};
 
 	test('agent with subcommand after text', async () => {
diff --git a/src/vs/workbench/contrib/chat/test/common/chatService.test.ts b/src/vs/workbench/contrib/chat/test/common/chatService.test.ts
index 37e6f0b2b5c..2dd2cea5493 100644
--- a/src/vs/workbench/contrib/chat/test/common/chatService.test.ts
+++ b/src/vs/workbench/contrib/chat/test/common/chatService.test.ts
@@ -36,6 +36,7 @@ const chatAgentWithUsedContext: IChatAgent = {
 	name: chatAgentWithUsedContextId,
 	extensionId: nullExtensionDescription.identifier,
 	extensionPublisher: '',
+	extensionDisplayName: '',
 	locations: [ChatAgentLocation.Panel],
 	metadata: {},
 	slashCommands: [],
@@ -90,8 +91,8 @@ suite('ChatService', () => {
 				return {};
 			},
 		} satisfies IChatAgentImplementation;
-		testDisposables.add(chatAgentService.registerAgent('testAgent', { name: 'testAgent', id: 'testAgent', isDefault: true, extensionId: nullExtensionDescription.identifier, extensionPublisher: '', locations: [ChatAgentLocation.Panel], metadata: {}, slashCommands: [] }));
-		testDisposables.add(chatAgentService.registerAgent(chatAgentWithUsedContextId, { name: chatAgentWithUsedContextId, id: chatAgentWithUsedContextId, extensionId: nullExtensionDescription.identifier, extensionPublisher: '', locations: [ChatAgentLocation.Panel], metadata: {}, slashCommands: [] }));
+		testDisposables.add(chatAgentService.registerAgent('testAgent', { name: 'testAgent', id: 'testAgent', isDefault: true, extensionId: nullExtensionDescription.identifier, extensionPublisher: '', extensionDisplayName: '', locations: [ChatAgentLocation.Panel], metadata: {}, slashCommands: [] }));
+		testDisposables.add(chatAgentService.registerAgent(chatAgentWithUsedContextId, { name: chatAgentWithUsedContextId, id: chatAgentWithUsedContextId, extensionId: nullExtensionDescription.identifier, extensionPublisher: '', extensionDisplayName: '', locations: [ChatAgentLocation.Panel], metadata: {}, slashCommands: [] }));
 		testDisposables.add(chatAgentService.registerAgentImplementation('testAgent', agent));
 		chatAgentService.updateAgent('testAgent', { requester: { name: 'test' }, fullName: 'test' });
 	});
diff --git a/src/vs/workbench/contrib/chat/test/common/voiceChat.test.ts b/src/vs/workbench/contrib/chat/test/common/voiceChat.test.ts
index e9b80df619e..b098da25e3f 100644
--- a/src/vs/workbench/contrib/chat/test/common/voiceChat.test.ts
+++ b/src/vs/workbench/contrib/chat/test/common/voiceChat.test.ts
@@ -28,6 +28,7 @@ suite('VoiceChat', () => {
 
 		extensionId: ExtensionIdentifier = nullExtensionDescription.identifier;
 		extensionPublisher = '';
+		extensionDisplayName = '';
 		locations: ChatAgentLocation[] = [ChatAgentLocation.Panel];
 		public readonly name: string;
 		constructor(readonly id: string, readonly slashCommands: IChatAgentCommand[]) {
diff --git a/src/vs/workbench/contrib/inlineChat/browser/inlineChatSessionServiceImpl.ts b/src/vs/workbench/contrib/inlineChat/browser/inlineChatSessionServiceImpl.ts
index 57984de81d4..4f189f7c9a2 100644
--- a/src/vs/workbench/contrib/inlineChat/browser/inlineChatSessionServiceImpl.ts
+++ b/src/vs/workbench/contrib/inlineChat/browser/inlineChatSessionServiceImpl.ts
@@ -318,6 +318,7 @@ export class InlineChatSessionServiceImpl implements IInlineChatSessionService {
 				name: 'editor',
 				extensionId: nullExtensionDescription.identifier,
 				extensionPublisher: '',
+				extensionDisplayName: '',
 				isDefault: true,
 				locations: [ChatAgentLocation.Editor],
 				get slashCommands(): IChatAgentCommand[] {
diff --git a/src/vs/workbench/contrib/inlineChat/test/browser/inlineChatController.test.ts b/src/vs/workbench/contrib/inlineChat/test/browser/inlineChatController.test.ts
index d911ba6bd3b..680adfaf7f3 100644
--- a/src/vs/workbench/contrib/inlineChat/test/browser/inlineChatController.test.ts
+++ b/src/vs/workbench/contrib/inlineChat/test/browser/inlineChatController.test.ts
@@ -181,6 +181,7 @@ suite('InteractiveChatController', function () {
 		store.add(chatAgentService.registerDynamicAgent({
 			extensionId: nullExtensionDescription.identifier,
 			extensionPublisher: '',
+			extensionDisplayName: '',
 			id: 'testAgent',
 			name: 'testAgent',
 			isDefault: true,
diff --git a/src/vs/workbench/contrib/inlineChat/test/browser/inlineChatSession.test.ts b/src/vs/workbench/contrib/inlineChat/test/browser/inlineChatSession.test.ts
index 054de63daef..586c0259dd7 100644
--- a/src/vs/workbench/contrib/inlineChat/test/browser/inlineChatSession.test.ts
+++ b/src/vs/workbench/contrib/inlineChat/test/browser/inlineChatSession.test.ts
@@ -128,6 +128,7 @@ suite('InlineChatSession', function () {
 		instaService.get(IChatAgentService).registerDynamicAgent({
 			extensionId: nullExtensionDescription.identifier,
 			extensionPublisher: '',
+			extensionDisplayName: '',
 			id: 'testAgent',
 			name: 'testAgent',
 			isDefault: true,