diff --git a/packages/cli/src/zed-integration/acpResume.test.ts b/packages/cli/src/zed-integration/acpResume.test.ts
index f814a9e586..54c04a0ff3 100644
--- a/packages/cli/src/zed-integration/acpResume.test.ts
+++ b/packages/cli/src/zed-integration/acpResume.test.ts
@@ -48,6 +48,24 @@ vi.mock('@google/gemini-cli-core', async (importOriginal) => {
     await importOriginal<typeof import('@google/gemini-cli-core')>();
   return {
     ...actual,
+    CoreToolCallStatus: {
+      Validating: 'validating',
+      Scheduled: 'scheduled',
+      Error: 'error',
+      Success: 'success',
+      Executing: 'executing',
+      Cancelled: 'cancelled',
+      AwaitingApproval: 'awaiting_approval',
+    },
+    LlmRole: {
+      MAIN: 'main',
+      SUBAGENT: 'subagent',
+      UTILITY_TOOL: 'utility_tool',
+      USER: 'user',
+      MODEL: 'model',
+      SYSTEM: 'system',
+      TOOL: 'tool',
+    },
     convertSessionToClientHistory: vi.fn(),
   };
 });
@@ -256,6 +274,7 @@ describe('GeminiAgent Session Resume', () => {
             toolCallId: 'call-2',
             status: 'failed',
             title: 'Write File',
+            kind: 'read',
           }),
         }),
       );
diff --git a/packages/cli/src/zed-integration/zedIntegration.test.ts b/packages/cli/src/zed-integration/zedIntegration.test.ts
index cc71dd9309..f1cb22bfda 100644
--- a/packages/cli/src/zed-integration/zedIntegration.test.ts
+++ b/packages/cli/src/zed-integration/zedIntegration.test.ts
@@ -73,7 +73,7 @@ vi.mock(
       ...actual,
       ReadManyFilesTool: vi.fn().mockImplementation(() => ({
         name: 'read_many_files',
-        kind: 'native',
+        kind: 'read',
         build: vi.fn().mockReturnValue({
           getDescription: () => 'Read files',
           toolLocations: () => [],
@@ -84,6 +84,28 @@ vi.mock(
       })),
       logToolCall: vi.fn(),
       isWithinRoot: vi.fn().mockReturnValue(true),
+      LlmRole: {
+        MAIN: 'main',
+        SUBAGENT: 'subagent',
+        UTILITY_TOOL: 'utility_tool',
+        UTILITY_COMPRESSOR: 'utility_compressor',
+        UTILITY_SUMMARIZER: 'utility_summarizer',
+        UTILITY_ROUTER: 'utility_router',
+        UTILITY_LOOP_DETECTOR: 'utility_loop_detector',
+        UTILITY_NEXT_SPEAKER: 'utility_next_speaker',
+        UTILITY_EDIT_CORRECTOR: 'utility_edit_corrector',
+        UTILITY_AUTOCOMPLETE: 'utility_autocomplete',
+        UTILITY_FAST_ACK_HELPER: 'utility_fast_ack_helper',
+      },
+      CoreToolCallStatus: {
+        Validating: 'validating',
+        Scheduled: 'scheduled',
+        Error: 'error',
+        Success: 'success',
+        Executing: 'executing',
+        Cancelled: 'cancelled',
+        AwaitingApproval: 'awaiting_approval',
+      },
     };
   },
 );
@@ -406,7 +428,7 @@ describe('Session', () => {
       recordCompletedToolCalls: vi.fn(),
     } as unknown as Mocked<GeminiChat>;
     mockTool = {
-      kind: 'native',
+      kind: 'read',
       build: vi.fn().mockReturnValue({
         getDescription: () => 'Test Tool',
         toolLocations: () => [],
@@ -511,6 +533,7 @@ describe('Session', () => {
         update: expect.objectContaining({
           sessionUpdate: 'tool_call',
           status: 'in_progress',
+          kind: 'read',
         }),
       }),
     );
@@ -632,6 +655,92 @@ describe('Session', () => {
     );
   });
 
+  it('should include _meta.kind in diff tool calls', async () => {
+    // Test 'add' (no original content)
+    const addConfirmation = {
+      type: 'edit',
+      fileName: 'new.txt',
+      originalContent: null,
+      newContent: 'New content',
+      onConfirm: vi.fn(),
+    };
+
+    // Test 'modify' (original and new content)
+    const modifyConfirmation = {
+      type: 'edit',
+      fileName: 'existing.txt',
+      originalContent: 'Old content',
+      newContent: 'New content',
+      onConfirm: vi.fn(),
+    };
+
+    // Test 'delete' (original content, no new content)
+    const deleteConfirmation = {
+      type: 'edit',
+      fileName: 'deleted.txt',
+      originalContent: 'Old content',
+      newContent: '',
+      onConfirm: vi.fn(),
+    };
+
+    const mockBuild = vi.fn();
+    mockTool.build = mockBuild;
+
+    // Helper to simulate tool call and check permission request
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
+    const checkDiffKind = async (confirmation: any, expectedKind: string) => {
+      mockBuild.mockReturnValueOnce({
+        getDescription: () => 'Test Tool',
+        toolLocations: () => [],
+        shouldConfirmExecute: vi.fn().mockResolvedValue(confirmation),
+        execute: vi.fn().mockResolvedValue({ llmContent: 'Result' }),
+      });
+
+      mockConnection.requestPermission.mockResolvedValueOnce({
+        outcome: {
+          outcome: 'selected',
+          optionId: ToolConfirmationOutcome.ProceedOnce,
+        },
+      });
+
+      const stream = createMockStream([
+        {
+          type: StreamEventType.CHUNK,
+          value: {
+            functionCalls: [{ name: 'test_tool', args: {} }],
+          },
+        },
+      ]);
+      const emptyStream = createMockStream([]);
+
+      mockChat.sendMessageStream
+        .mockResolvedValueOnce(stream)
+        .mockResolvedValueOnce(emptyStream);
+
+      await session.prompt({
+        sessionId: 'session-1',
+        prompt: [{ type: 'text', text: 'Call tool' }],
+      });
+
+      expect(mockConnection.requestPermission).toHaveBeenCalledWith(
+        expect.objectContaining({
+          toolCall: expect.objectContaining({
+            content: expect.arrayContaining([
+              expect.objectContaining({
+                type: 'diff',
+                _meta: { kind: expectedKind },
+              }),
+            ]),
+          }),
+        }),
+      );
+    };
+
+    await checkDiffKind(addConfirmation, 'add');
+    await checkDiffKind(modifyConfirmation, 'modify');
+    await checkDiffKind(deleteConfirmation, 'delete');
+  });
+
   it('should handle @path resolution', async () => {
     (path.resolve as unknown as Mock).mockReturnValue('/tmp/file.txt');
     (fs.stat as unknown as Mock).mockResolvedValue({
diff --git a/packages/cli/src/zed-integration/zedIntegration.ts b/packages/cli/src/zed-integration/zedIntegration.ts
index 1dce8d5e6d..f6c0a63349 100644
--- a/packages/cli/src/zed-integration/zedIntegration.ts
+++ b/packages/cli/src/zed-integration/zedIntegration.ts
@@ -682,6 +682,13 @@ export class Session {
             path: confirmationDetails.fileName,
             oldText: confirmationDetails.originalContent,
             newText: confirmationDetails.newContent,
+            _meta: {
+              kind: !confirmationDetails.originalContent
+                ? 'add'
+                : confirmationDetails.newContent === ''
+                  ? 'delete'
+                  : 'modify',
+            },
           });
         }
 
@@ -1203,6 +1210,13 @@ function toToolCallContent(toolResult: ToolResult): acp.ToolCallContent | null {
           path: toolResult.returnDisplay.fileName,
           oldText: toolResult.returnDisplay.originalContent,
           newText: toolResult.returnDisplay.newContent,
+          _meta: {
+            kind: !toolResult.returnDisplay.originalContent
+              ? 'add'
+              : toolResult.returnDisplay.newContent === ''
+                ? 'delete'
+                : 'modify',
+          },
         };
       }
       return null;
@@ -1291,14 +1305,16 @@ function toAcpToolKind(kind: Kind): acp.ToolKind {
   switch (kind) {
     case Kind.Read:
     case Kind.Edit:
+    case Kind.Execute:
+    case Kind.Search:
     case Kind.Delete:
     case Kind.Move:
-    case Kind.Search:
-    case Kind.Execute:
     case Kind.Think:
     case Kind.Fetch:
+    case Kind.SwitchMode:
     case Kind.Other:
       return kind as acp.ToolKind;
+    case Kind.Plan:
     case Kind.Communicate:
     default:
       return 'other';
diff --git a/packages/core/src/tools/tools.ts b/packages/core/src/tools/tools.ts
index acbbd7bfff..608f405029 100644
--- a/packages/core/src/tools/tools.ts
+++ b/packages/core/src/tools/tools.ts
@@ -817,6 +817,7 @@ export enum Kind {
   Fetch = 'fetch',
   Communicate = 'communicate',
   Plan = 'plan',
+  SwitchMode = 'switch_mode',
   Other = 'other',
 }