feat: Add --yolo mode that automatically accepts all tools executions (#695)

Co-authored-by: N. Taylor Mullen <ntaylormullen@google.com>

packages/core/src/config/config.ts

@@ -22,6 +22,12 @@ import { ReadManyFilesTool } from '../tools/read-many-files.js';
 import { MemoryTool, setGeminiMdFilename } from '../tools/memoryTool.js';
 import { WebSearchTool } from '../tools/web-search.js';
 
+export enum ApprovalMode {
+  DEFAULT = 'default',
+  AUTO_EDIT = 'autoEdit',
+  YOLO = 'yolo',
+}
+
 export class MCPServerConfig {
   constructor(
     // For stdio transport
@@ -53,7 +59,7 @@ export interface ConfigParameters {
   userAgent: string;
   userMemory?: string;
   geminiMdFileCount?: number;
-  alwaysSkipModificationConfirmation?: boolean;
+  approvalMode?: ApprovalMode;
   vertexai?: boolean;
   showMemoryUsage?: boolean;
   contextFileName?: string;
@@ -76,7 +82,7 @@ export class Config {
   private readonly userAgent: string;
   private userMemory: string;
   private geminiMdFileCount: number;
-  private alwaysSkipModificationConfirmation: boolean;
+  private approvalMode: ApprovalMode;
   private readonly vertexai: boolean | undefined;
   private readonly showMemoryUsage: boolean;
 
@@ -96,8 +102,7 @@ export class Config {
     this.userAgent = params.userAgent;
     this.userMemory = params.userMemory ?? '';
     this.geminiMdFileCount = params.geminiMdFileCount ?? 0;
-    this.alwaysSkipModificationConfirmation =
-      params.alwaysSkipModificationConfirmation ?? false;
+    this.approvalMode = params.approvalMode ?? ApprovalMode.DEFAULT;
     this.vertexai = params.vertexai;
     this.showMemoryUsage = params.showMemoryUsage ?? false;
 
@@ -179,12 +184,12 @@ export class Config {
     this.geminiMdFileCount = count;
   }
 
-  getAlwaysSkipModificationConfirmation(): boolean {
-    return this.alwaysSkipModificationConfirmation;
+  getApprovalMode(): ApprovalMode {
+    return this.approvalMode;
   }
 
-  setAlwaysSkipModificationConfirmation(skip: boolean): void {
-    this.alwaysSkipModificationConfirmation = skip;
+  setApprovalMode(mode: ApprovalMode): void {
+    this.approvalMode = mode;
   }
 
   getVertexAI(): boolean | undefined {

packages/core/src/core/coreToolScheduler.ts

@@ -12,6 +12,7 @@ import {
   ToolCallConfirmationDetails,
   ToolResult,
   ToolRegistry,
+  ApprovalMode,
 } from '../index.js';
 import { Part, PartUnion, PartListUnion } from '@google/genai';
 
@@ -159,6 +160,7 @@ interface CoreToolSchedulerOptions {
   outputUpdateHandler?: OutputUpdateHandler;
   onAllToolCallsComplete?: AllToolCallsCompleteHandler;
   onToolCallsUpdate?: ToolCallsUpdateHandler;
+  approvalMode?: ApprovalMode;
 }
 
 export class CoreToolScheduler {
@@ -168,12 +170,14 @@ export class CoreToolScheduler {
   private outputUpdateHandler?: OutputUpdateHandler;
   private onAllToolCallsComplete?: AllToolCallsCompleteHandler;
   private onToolCallsUpdate?: ToolCallsUpdateHandler;
+  private approvalMode: ApprovalMode;
 
   constructor(options: CoreToolSchedulerOptions) {
     this.toolRegistry = options.toolRegistry;
     this.outputUpdateHandler = options.outputUpdateHandler;
     this.onAllToolCallsComplete = options.onAllToolCallsComplete;
     this.onToolCallsUpdate = options.onToolCallsUpdate;
+    this.approvalMode = options.approvalMode ?? ApprovalMode.DEFAULT;
     this.abortController = new AbortController();
   }
 
@@ -324,29 +328,33 @@ export class CoreToolScheduler {
 
       const { request: reqInfo, tool: toolInstance } = toolCall;
       try {
-        const confirmationDetails = await toolInstance.shouldConfirmExecute(
-          reqInfo.args,
-          this.abortController.signal,
-        );
-
-        if (confirmationDetails) {
-          const originalOnConfirm = confirmationDetails.onConfirm;
-          const wrappedConfirmationDetails: ToolCallConfirmationDetails = {
-            ...confirmationDetails,
-            onConfirm: (outcome: ToolConfirmationOutcome) =>
-              this.handleConfirmationResponse(
-                reqInfo.callId,
-                originalOnConfirm,
-                outcome,
-              ),
-          };
-          this.setStatusInternal(
-            reqInfo.callId,
-            'awaiting_approval',
-            wrappedConfirmationDetails,
-          );
-        } else {
+        if (this.approvalMode === ApprovalMode.YOLO) {
           this.setStatusInternal(reqInfo.callId, 'scheduled');
+        } else {
+          const confirmationDetails = await toolInstance.shouldConfirmExecute(
+            reqInfo.args,
+            this.abortController.signal,
+          );
+
+          if (confirmationDetails) {
+            const originalOnConfirm = confirmationDetails.onConfirm;
+            const wrappedConfirmationDetails: ToolCallConfirmationDetails = {
+              ...confirmationDetails,
+              onConfirm: (outcome: ToolConfirmationOutcome) =>
+                this.handleConfirmationResponse(
+                  reqInfo.callId,
+                  originalOnConfirm,
+                  outcome,
+                ),
+            };
+            this.setStatusInternal(
+              reqInfo.callId,
+              'awaiting_approval',
+              wrappedConfirmationDetails,
+            );
+          } else {
+            this.setStatusInternal(reqInfo.callId, 'scheduled');
+          }
         }
       } catch (error) {
         this.setStatusInternal(

packages/core/src/tools/edit.test.ts

@@ -25,7 +25,7 @@ import { FileDiff } from './tools.js';
 import path from 'path';
 import fs from 'fs';
 import os from 'os';
-import { Config } from '../config/config.js';
+import { ApprovalMode, Config } from '../config/config.js';
 import { Content, Part, SchemaUnion } from '@google/genai';
 
 describe('EditTool', () => {
@@ -41,8 +41,8 @@ describe('EditTool', () => {
 
     mockConfig = {
       getTargetDir: () => rootDir,
-      getAlwaysSkipModificationConfirmation: vi.fn(() => false),
-      setAlwaysSkipModificationConfirmation: vi.fn(),
+      getApprovalMode: vi.fn(() => false),
+      setApprovalMode: vi.fn(),
       // getGeminiConfig: () => ({ apiKey: 'test-api-key' }), // This was not a real Config method
       // Add other properties/methods of Config if EditTool uses them
       // Minimal other methods to satisfy Config type if needed by EditTool constructor or other direct uses:
@@ -65,12 +65,10 @@ describe('EditTool', () => {
     } as unknown as Config;
 
     // Reset mocks before each test
-    (mockConfig.getAlwaysSkipModificationConfirmation as Mock).mockClear();
-    (mockConfig.setAlwaysSkipModificationConfirmation as Mock).mockClear();
+    (mockConfig.getApprovalMode as Mock).mockClear();
+    (mockConfig.getApprovalMode as Mock).mockClear();
     // Default to not skipping confirmation
-    (mockConfig.getAlwaysSkipModificationConfirmation as Mock).mockReturnValue(
-      false,
-    );
+    (mockConfig.getApprovalMode as Mock).mockReturnValue(ApprovalMode.DEFAULT);
 
     // Reset mocks and set default implementation for ensureCorrectEdit
     mockEnsureCorrectEdit.mockReset();
@@ -439,9 +437,9 @@ describe('EditTool', () => {
         new_string: fileContent,
       };
 
-      (
-        mockConfig.getAlwaysSkipModificationConfirmation as Mock
-      ).mockReturnValueOnce(true);
+      (mockConfig.getApprovalMode as Mock).mockReturnValueOnce(
+        ApprovalMode.AUTO_EDIT,
+      );
       const result = await tool.execute(params, new AbortController().signal);
 
       expect(result.llmContent).toMatch(/Created new file/);

packages/core/src/tools/edit.ts

@@ -20,7 +20,7 @@ import { makeRelative, shortenPath } from '../utils/paths.js';
 import { isNodeError } from '../utils/errors.js';
 import { ReadFileTool } from './read-file.js';
 import { GeminiClient } from '../core/client.js';
-import { Config } from '../config/config.js';
+import { Config, ApprovalMode } from '../config/config.js';
 import { ensureCorrectEdit } from '../utils/editCorrector.js';
 import { DEFAULT_DIFF_OPTIONS } from './diffOptions.js';
 
@@ -281,7 +281,7 @@ Expectation for required parameters:
     params: EditToolParams,
     abortSignal: AbortSignal,
   ): Promise<ToolCallConfirmationDetails | false> {
-    if (this.config.getAlwaysSkipModificationConfirmation()) {
+    if (this.config.getApprovalMode() === ApprovalMode.AUTO_EDIT) {
       return false;
     }
     const validationError = this.validateToolParams(params);
@@ -356,7 +356,7 @@ Expectation for required parameters:
       fileDiff,
       onConfirm: async (outcome: ToolConfirmationOutcome) => {
         if (outcome === ToolConfirmationOutcome.ProceedAlways) {
-          this.config.setAlwaysSkipModificationConfirmation(true);
+          this.config.setApprovalMode(ApprovalMode.AUTO_EDIT);
         }
       },
     };

packages/core/src/tools/tool-registry.test.ts

@@ -16,7 +16,7 @@ import {
 } from 'vitest';
 import { ToolRegistry, DiscoveredTool } from './tool-registry.js';
 import { DiscoveredMCPTool } from './mcp-tool.js';
-import { Config, ConfigParameters } from '../config/config.js';
+import { ApprovalMode, Config, ConfigParameters } from '../config/config.js';
 import { BaseTool, ToolResult } from './tools.js';
 import { FunctionDeclaration } from '@google/genai';
 import { execSync, spawn } from 'node:child_process'; // Import spawn here
@@ -85,7 +85,7 @@ const baseConfigParams: ConfigParameters = {
   userAgent: 'TestAgent/1.0',
   userMemory: '',
   geminiMdFileCount: 0,
-  alwaysSkipModificationConfirmation: false,
+  approvalMode: ApprovalMode.DEFAULT,
   vertexai: false,
 };
 

packages/core/src/tools/write-file.test.ts

@@ -20,7 +20,7 @@ import {
   ToolEditConfirmationDetails,
 } from './tools.js';
 import { type EditToolParams } from './edit.js';
-import { Config } from '../config/config.js';
+import { ApprovalMode, Config } from '../config/config.js';
 import { ToolRegistry } from './tool-registry.js';
 import path from 'path';
 import fs from 'fs';
@@ -51,8 +51,8 @@ vi.mocked(ensureCorrectFileContent).mockImplementation(
 // Mock Config
 const mockConfigInternal = {
   getTargetDir: () => rootDir,
-  getAlwaysSkipModificationConfirmation: vi.fn(() => false),
-  setAlwaysSkipModificationConfirmation: vi.fn(),
+  getApprovalMode: vi.fn(() => ApprovalMode.DEFAULT),
+  setApprovalMode: vi.fn(),
   getApiKey: () => 'test-key',
   getModel: () => 'test-model',
   getSandbox: () => false,
@@ -100,10 +100,8 @@ describe('WriteFileTool', () => {
     tool = new WriteFileTool(mockConfig);
 
     // Reset mocks before each test
-    mockConfigInternal.getAlwaysSkipModificationConfirmation.mockReturnValue(
-      false,
-    );
-    mockConfigInternal.setAlwaysSkipModificationConfirmation.mockClear();
+    mockConfigInternal.getApprovalMode.mockReturnValue(ApprovalMode.DEFAULT);
+    mockConfigInternal.setApprovalMode.mockClear();
     mockEnsureCorrectEdit.mockReset();
     mockEnsureCorrectFileContent.mockReset();
 

packages/core/src/tools/write-file.ts

@@ -7,7 +7,7 @@
 import fs from 'fs';
 import path from 'path';
 import * as Diff from 'diff';
-import { Config } from '../config/config.js';
+import { Config, ApprovalMode } from '../config/config.js';
 import {
   BaseTool,
   ToolResult,
@@ -143,7 +143,7 @@ export class WriteFileTool extends BaseTool<WriteFileToolParams, ToolResult> {
     params: WriteFileToolParams,
     abortSignal: AbortSignal,
   ): Promise<ToolCallConfirmationDetails | false> {
-    if (this.config.getAlwaysSkipModificationConfirmation()) {
+    if (this.config.getApprovalMode() === ApprovalMode.AUTO_EDIT) {
       return false;
     }
 
@@ -186,7 +186,7 @@ export class WriteFileTool extends BaseTool<WriteFileToolParams, ToolResult> {
       fileDiff,
       onConfirm: async (outcome: ToolConfirmationOutcome) => {
         if (outcome === ToolConfirmationOutcome.ProceedAlways) {
-          this.config.setAlwaysSkipModificationConfirmation(true);
+          this.config.setApprovalMode(ApprovalMode.AUTO_EDIT);
         }
       },
     };