diff --git a/resources/global/en/workflows/default.yaml b/resources/global/en/workflows/default.yaml
index 3c8263f..f393063 100644
--- a/resources/global/en/workflows/default.yaml
+++ b/resources/global/en/workflows/default.yaml
@@ -99,7 +99,7 @@ steps:
       - Bash
       - WebSearch
       - WebFetch
-    permission_mode: acceptEdits
+    permission_mode: edit
     rules:
       - condition: Implementation complete
         next: ai_review
@@ -220,7 +220,7 @@ steps:
       - Bash
       - WebSearch
       - WebFetch
-    permission_mode: acceptEdits
+    permission_mode: edit
     rules:
       - condition: AI issues fixed
         next: ai_review
@@ -389,7 +389,7 @@ steps:
       - Bash
       - WebSearch
       - WebFetch
-    permission_mode: acceptEdits
+    permission_mode: edit
     rules:
       - condition: Fix complete
         next: reviewers
diff --git a/resources/global/en/workflows/expert-cqrs.yaml b/resources/global/en/workflows/expert-cqrs.yaml
index bd280a6..272ee21 100644
--- a/resources/global/en/workflows/expert-cqrs.yaml
+++ b/resources/global/en/workflows/expert-cqrs.yaml
@@ -502,7 +502,7 @@ steps:
       - Bash
       - WebSearch
       - WebFetch
-    permission_mode: acceptEdits
+    permission_mode: edit
     rules:
       - condition: Fix complete
         next: reviewers
diff --git a/resources/global/en/workflows/expert.yaml b/resources/global/en/workflows/expert.yaml
index d036a9b..c117a4c 100644
--- a/resources/global/en/workflows/expert.yaml
+++ b/resources/global/en/workflows/expert.yaml
@@ -515,7 +515,7 @@ steps:
       - Bash
       - WebSearch
       - WebFetch
-    permission_mode: acceptEdits
+    permission_mode: edit
     rules:
       - condition: Fix complete
         next: reviewers
diff --git a/resources/global/en/workflows/simple.yaml b/resources/global/en/workflows/simple.yaml
index 0eabd9c..d016579 100644
--- a/resources/global/en/workflows/simple.yaml
+++ b/resources/global/en/workflows/simple.yaml
@@ -95,7 +95,7 @@ steps:
       - Bash
       - WebSearch
       - WebFetch
-    permission_mode: acceptEdits
+    permission_mode: edit
     rules:
       - condition: Implementation complete
         next: ai_review
diff --git a/resources/global/ja/workflows/default.yaml b/resources/global/ja/workflows/default.yaml
index 4e36fce..aa94b6b 100644
--- a/resources/global/ja/workflows/default.yaml
+++ b/resources/global/ja/workflows/default.yaml
@@ -90,7 +90,7 @@ steps:
       - Bash
       - WebSearch
       - WebFetch
-    permission_mode: acceptEdits
+    permission_mode: edit
     rules:
       - condition: 実装完了
         next: ai_review
@@ -215,7 +215,7 @@ steps:
       - Bash
       - WebSearch
       - WebFetch
-    permission_mode: acceptEdits
+    permission_mode: edit
     pass_previous_response: true
     rules:
       - condition: AI問題の修正完了
@@ -395,7 +395,7 @@ steps:
       - Bash
       - WebSearch
       - WebFetch
-    permission_mode: acceptEdits
+    permission_mode: edit
     rules:
       - condition: 修正完了
         next: reviewers
diff --git a/resources/global/ja/workflows/expert-cqrs.yaml b/resources/global/ja/workflows/expert-cqrs.yaml
index 89ce72b..4424d64 100644
--- a/resources/global/ja/workflows/expert-cqrs.yaml
+++ b/resources/global/ja/workflows/expert-cqrs.yaml
@@ -510,7 +510,7 @@ steps:
       - Bash
       - WebSearch
       - WebFetch
-    permission_mode: acceptEdits
+    permission_mode: edit
     rules:
       - condition: 修正が完了した
         next: reviewers
diff --git a/resources/global/ja/workflows/expert.yaml b/resources/global/ja/workflows/expert.yaml
index 2fc19f2..02b9c43 100644
--- a/resources/global/ja/workflows/expert.yaml
+++ b/resources/global/ja/workflows/expert.yaml
@@ -501,7 +501,7 @@ steps:
       - Bash
       - WebSearch
       - WebFetch
-    permission_mode: acceptEdits
+    permission_mode: edit
     rules:
       - condition: 修正が完了した
         next: reviewers
diff --git a/resources/global/ja/workflows/simple.yaml b/resources/global/ja/workflows/simple.yaml
index 62871d6..b33e68b 100644
--- a/resources/global/ja/workflows/simple.yaml
+++ b/resources/global/ja/workflows/simple.yaml
@@ -94,7 +94,7 @@ steps:
       - Bash
       - WebSearch
       - WebFetch
-    permission_mode: acceptEdits
+    permission_mode: edit
     instruction_template: |
       planステップで立てた計画に従って実装してください。
       計画レポート（{report:00-plan.md}）を参照し、実装を進めてください。
diff --git a/src/__tests__/models.test.ts b/src/__tests__/models.test.ts
index 6a29e06..707675f 100644
--- a/src/__tests__/models.test.ts
+++ b/src/__tests__/models.test.ts
@@ -43,14 +43,17 @@ describe('StatusSchema', () => {
 
 describe('PermissionModeSchema', () => {
   it('should accept valid permission modes', () => {
-    expect(PermissionModeSchema.parse('default')).toBe('default');
-    expect(PermissionModeSchema.parse('acceptEdits')).toBe('acceptEdits');
-    expect(PermissionModeSchema.parse('bypassPermissions')).toBe('bypassPermissions');
+    expect(PermissionModeSchema.parse('readonly')).toBe('readonly');
+    expect(PermissionModeSchema.parse('edit')).toBe('edit');
+    expect(PermissionModeSchema.parse('full')).toBe('full');
   });
 
   it('should reject invalid permission modes', () => {
     expect(() => PermissionModeSchema.parse('readOnly')).toThrow();
     expect(() => PermissionModeSchema.parse('admin')).toThrow();
+    expect(() => PermissionModeSchema.parse('default')).toThrow();
+    expect(() => PermissionModeSchema.parse('acceptEdits')).toThrow();
+    expect(() => PermissionModeSchema.parse('bypassPermissions')).toThrow();
   });
 });
 
@@ -87,7 +90,7 @@ describe('WorkflowConfigRawSchema', () => {
           name: 'implement',
           agent: 'coder',
           allowed_tools: ['Read', 'Edit', 'Write', 'Bash'],
-          permission_mode: 'acceptEdits',
+          permission_mode: 'edit',
           instruction: '{task}',
           rules: [
             { condition: 'Done', next: 'COMPLETE' },
@@ -97,7 +100,7 @@ describe('WorkflowConfigRawSchema', () => {
     };
 
     const result = WorkflowConfigRawSchema.parse(config);
-    expect(result.steps[0]?.permission_mode).toBe('acceptEdits');
+    expect(result.steps[0]?.permission_mode).toBe('edit');
   });
 
   it('should allow omitting permission_mode', () => {
diff --git a/src/__tests__/permission-mode.test.ts b/src/__tests__/permission-mode.test.ts
new file mode 100644
index 0000000..44440df
--- /dev/null
+++ b/src/__tests__/permission-mode.test.ts
@@ -0,0 +1,54 @@
+/**
+ * Tests for permission mode mapping functions
+ */
+
+import { describe, it, expect } from 'vitest';
+import { SdkOptionsBuilder } from '../infra/claude/options-builder.js';
+import { mapToCodexSandboxMode } from '../infra/codex/types.js';
+import type { PermissionMode } from '../core/models/index.js';
+
+describe('SdkOptionsBuilder.mapToSdkPermissionMode', () => {
+  it('should map readonly to SDK default', () => {
+    expect(SdkOptionsBuilder.mapToSdkPermissionMode('readonly')).toBe('default');
+  });
+
+  it('should map edit to SDK acceptEdits', () => {
+    expect(SdkOptionsBuilder.mapToSdkPermissionMode('edit')).toBe('acceptEdits');
+  });
+
+  it('should map full to SDK bypassPermissions', () => {
+    expect(SdkOptionsBuilder.mapToSdkPermissionMode('full')).toBe('bypassPermissions');
+  });
+
+  it('should map all PermissionMode values exhaustively', () => {
+    const modes: PermissionMode[] = ['readonly', 'edit', 'full'];
+    for (const mode of modes) {
+      const result = SdkOptionsBuilder.mapToSdkPermissionMode(mode);
+      expect(result).toBeDefined();
+      expect(typeof result).toBe('string');
+    }
+  });
+});
+
+describe('mapToCodexSandboxMode', () => {
+  it('should map readonly to read-only', () => {
+    expect(mapToCodexSandboxMode('readonly')).toBe('read-only');
+  });
+
+  it('should map edit to workspace-write', () => {
+    expect(mapToCodexSandboxMode('edit')).toBe('workspace-write');
+  });
+
+  it('should map full to danger-full-access', () => {
+    expect(mapToCodexSandboxMode('full')).toBe('danger-full-access');
+  });
+
+  it('should map all PermissionMode values exhaustively', () => {
+    const modes: PermissionMode[] = ['readonly', 'edit', 'full'];
+    for (const mode of modes) {
+      const result = mapToCodexSandboxMode(mode);
+      expect(result).toBeDefined();
+      expect(typeof result).toBe('string');
+    }
+  });
+});
diff --git a/src/agents/runner.ts b/src/agents/runner.ts
index 5ff393c..b27199b 100644
--- a/src/agents/runner.ts
+++ b/src/agents/runner.ts
@@ -154,6 +154,26 @@ export class AgentRunner {
     return provider.callCustom(agentConfig.name, task, systemPrompt, callOptions);
   }
 
+  /** Build ProviderCallOptions from RunAgentOptions with optional systemPrompt override */
+  private static buildProviderCallOptions(
+    options: RunAgentOptions,
+    systemPrompt?: string,
+  ): ProviderCallOptions {
+    return {
+      cwd: options.cwd,
+      sessionId: options.sessionId,
+      allowedTools: options.allowedTools,
+      maxTurns: options.maxTurns,
+      model: AgentRunner.resolveModel(options.cwd, options),
+      systemPrompt,
+      permissionMode: options.permissionMode,
+      onStream: options.onStream,
+      onPermissionRequest: options.onPermissionRequest,
+      onAskUserQuestion: options.onAskUserQuestion,
+      bypassPermissions: options.bypassPermissions,
+    };
+  }
+
   /** Run an agent by name, path, inline prompt string, or no agent at all */
   async run(
     agentSpec: string | undefined,
@@ -174,25 +194,9 @@ export class AgentRunner {
     // 1. If agentPath is provided (resolved file exists), load prompt from file
     if (options.agentPath) {
       const systemPrompt = AgentRunner.loadAgentPromptFromPath(options.agentPath);
-
       const providerType = AgentRunner.resolveProvider(options.cwd, options);
       const provider = getProvider(providerType);
-
-      const callOptions: ProviderCallOptions = {
-        cwd: options.cwd,
-        sessionId: options.sessionId,
-        allowedTools: options.allowedTools,
-        maxTurns: options.maxTurns,
-        model: AgentRunner.resolveModel(options.cwd, options),
-        systemPrompt,
-        permissionMode: options.permissionMode,
-        onStream: options.onStream,
-        onPermissionRequest: options.onPermissionRequest,
-        onAskUserQuestion: options.onAskUserQuestion,
-        bypassPermissions: options.bypassPermissions,
-      };
-
-      return provider.call(agentName, task, callOptions);
+      return provider.call(agentName, task, AgentRunner.buildProviderCallOptions(options, systemPrompt));
     }
 
     // 2. If agentSpec is provided but no agentPath (file not found), try custom agent first,
@@ -207,42 +211,13 @@ export class AgentRunner {
       // Use agentSpec string as inline system prompt
       const providerType = AgentRunner.resolveProvider(options.cwd, options);
       const provider = getProvider(providerType);
-
-      const callOptions: ProviderCallOptions = {
-        cwd: options.cwd,
-        sessionId: options.sessionId,
-        allowedTools: options.allowedTools,
-        maxTurns: options.maxTurns,
-        model: AgentRunner.resolveModel(options.cwd, options),
-        systemPrompt: agentSpec,
-        permissionMode: options.permissionMode,
-        onStream: options.onStream,
-        onPermissionRequest: options.onPermissionRequest,
-        onAskUserQuestion: options.onAskUserQuestion,
-        bypassPermissions: options.bypassPermissions,
-      };
-
-      return provider.call(agentName, task, callOptions);
+      return provider.call(agentName, task, AgentRunner.buildProviderCallOptions(options, agentSpec));
     }
 
     // 3. No agent specified — run with instruction_template only (no system prompt)
     const providerType = AgentRunner.resolveProvider(options.cwd, options);
     const provider = getProvider(providerType);
-
-    const callOptions: ProviderCallOptions = {
-      cwd: options.cwd,
-      sessionId: options.sessionId,
-      allowedTools: options.allowedTools,
-      maxTurns: options.maxTurns,
-      model: AgentRunner.resolveModel(options.cwd, options),
-      permissionMode: options.permissionMode,
-      onStream: options.onStream,
-      onPermissionRequest: options.onPermissionRequest,
-      onAskUserQuestion: options.onAskUserQuestion,
-      bypassPermissions: options.bypassPermissions,
-    };
-
-    return provider.call(agentName, task, callOptions);
+    return provider.call(agentName, task, AgentRunner.buildProviderCallOptions(options));
   }
 }
 
diff --git a/src/core/models/schemas.ts b/src/core/models/schemas.ts
index bd6960f..5e9ab2c 100644
--- a/src/core/models/schemas.ts
+++ b/src/core/models/schemas.ts
@@ -53,7 +53,7 @@ export const StatusSchema = z.enum([
 ]);
 
 /** Permission mode schema for tool execution */
-export const PermissionModeSchema = z.enum(['default', 'acceptEdits', 'bypassPermissions']);
+export const PermissionModeSchema = z.enum(['readonly', 'edit', 'full']);
 
 /**
  * Report object schema (new structured format).
diff --git a/src/core/models/status.ts b/src/core/models/status.ts
index 687ecc5..e43b101 100644
--- a/src/core/models/status.ts
+++ b/src/core/models/status.ts
@@ -25,5 +25,5 @@ export type RuleMatchMethod =
   | 'ai_judge'
   | 'ai_judge_fallback';
 
-/** Permission mode for tool execution */
-export type PermissionMode = 'default' | 'acceptEdits' | 'bypassPermissions';
+/** Permission mode for tool execution (provider-agnostic) */
+export type PermissionMode = 'readonly' | 'edit' | 'full';
diff --git a/src/infra/claude/options-builder.ts b/src/infra/claude/options-builder.ts
index 4c1346b..36adc79 100644
--- a/src/infra/claude/options-builder.ts
+++ b/src/infra/claude/options-builder.ts
@@ -14,8 +14,9 @@ import type {
   HookInput,
   HookJSONOutput,
   PreToolUseHookInput,
-  PermissionMode,
+  PermissionMode as SdkPermissionMode,
 } from '@anthropic-ai/claude-agent-sdk';
+import type { PermissionMode } from '../../core/models/index.js';
 import { createLogger } from '../../shared/utils/index.js';
 import type {
   PermissionHandler,
@@ -86,13 +87,23 @@ export class SdkOptionsBuilder {
     return sdkOptions;
   }
 
+  /** Map TAKT PermissionMode to Claude SDK PermissionMode */
+  static mapToSdkPermissionMode(mode: PermissionMode): SdkPermissionMode {
+    const mapping: Record<PermissionMode, SdkPermissionMode> = {
+      readonly: 'default',
+      edit: 'acceptEdits',
+      full: 'bypassPermissions',
+    };
+    return mapping[mode];
+  }
+
   /** Resolve permission mode with priority: bypassPermissions > explicit > callback-based > default */
-  private resolvePermissionMode(): PermissionMode {
+  private resolvePermissionMode(): SdkPermissionMode {
     if (this.options.bypassPermissions) {
       return 'bypassPermissions';
     }
     if (this.options.permissionMode) {
-      return this.options.permissionMode;
+      return SdkOptionsBuilder.mapToSdkPermissionMode(this.options.permissionMode);
     }
     if (this.options.onPermissionRequest) {
       return 'default';
diff --git a/src/infra/claude/types.ts b/src/infra/claude/types.ts
index a4e5d16..ab7ba23 100644
--- a/src/infra/claude/types.ts
+++ b/src/infra/claude/types.ts
@@ -152,8 +152,8 @@ export interface ClaudeSpawnOptions {
   onStream?: StreamCallback;
   /** Custom agents to register */
   agents?: Record<string, AgentDefinition>;
-  /** Permission mode for tool execution (default: 'default' for interactive) */
-  permissionMode?: SdkPermissionMode;
+  /** Permission mode for tool execution (TAKT abstract value, mapped to SDK value in SdkOptionsBuilder) */
+  permissionMode?: PermissionMode;
   /** Custom permission handler for interactive permission prompts */
   onPermissionRequest?: PermissionHandler;
   /** Custom handler for AskUserQuestion tool */
diff --git a/src/infra/codex/client.ts b/src/infra/codex/client.ts
index 983dd88..b6953f4 100644
--- a/src/infra/codex/client.ts
+++ b/src/infra/codex/client.ts
@@ -7,7 +7,7 @@
 import { Codex } from '@openai/codex-sdk';
 import type { AgentResponse } from '../../core/models/index.js';
 import { createLogger, getErrorMessage } from '../../shared/utils/index.js';
-import type { CodexCallOptions } from './types.js';
+import { mapToCodexSandboxMode, type CodexCallOptions } from './types.js';
 import {
   type CodexEvent,
   type CodexItem,
@@ -39,9 +39,13 @@ export class CodexClient {
     options: CodexCallOptions,
   ): Promise<AgentResponse> {
     const codex = new Codex(options.openaiApiKey ? { apiKey: options.openaiApiKey } : undefined);
+    const sandboxMode = options.permissionMode
+      ? mapToCodexSandboxMode(options.permissionMode)
+      : 'workspace-write';
     const threadOptions = {
       model: options.model,
       workingDirectory: options.cwd,
+      sandboxMode,
     };
     const thread = options.sessionId
       ? await codex.resumeThread(options.sessionId, threadOptions)
diff --git a/src/infra/codex/index.ts b/src/infra/codex/index.ts
index 884056d..e09c657 100644
--- a/src/infra/codex/index.ts
+++ b/src/infra/codex/index.ts
@@ -3,4 +3,5 @@
  */
 
 export { CodexClient, callCodex, callCodexCustom } from './client.js';
-export type { CodexCallOptions } from './types.js';
+export { mapToCodexSandboxMode } from './types.js';
+export type { CodexCallOptions, CodexSandboxMode } from './types.js';
diff --git a/src/infra/codex/types.ts b/src/infra/codex/types.ts
index 45a689c..6c6aa9a 100644
--- a/src/infra/codex/types.ts
+++ b/src/infra/codex/types.ts
@@ -3,6 +3,20 @@
  */
 
 import type { StreamCallback } from '../claude/index.js';
+import type { PermissionMode } from '../../core/models/index.js';
+
+/** Codex sandbox mode values */
+export type CodexSandboxMode = 'read-only' | 'workspace-write' | 'danger-full-access';
+
+/** Map TAKT PermissionMode to Codex sandbox mode */
+export function mapToCodexSandboxMode(mode: PermissionMode): CodexSandboxMode {
+  const mapping: Record<PermissionMode, CodexSandboxMode> = {
+    readonly: 'read-only',
+    edit: 'workspace-write',
+    full: 'danger-full-access',
+  };
+  return mapping[mode];
+}
 
 /** Options for calling Codex */
 export interface CodexCallOptions {
@@ -10,6 +24,8 @@ export interface CodexCallOptions {
   sessionId?: string;
   model?: string;
   systemPrompt?: string;
+  /** Permission mode for sandbox configuration */
+  permissionMode?: PermissionMode;
   /** Enable streaming mode with callback (best-effort) */
   onStream?: StreamCallback;
   /** OpenAI API key (bypasses CLI auth) */
diff --git a/src/infra/providers/codex.ts b/src/infra/providers/codex.ts
index cb54b55..178db42 100644
--- a/src/infra/providers/codex.ts
+++ b/src/infra/providers/codex.ts
@@ -15,6 +15,7 @@ export class CodexProvider implements Provider {
       sessionId: options.sessionId,
       model: options.model,
       systemPrompt: options.systemPrompt,
+      permissionMode: options.permissionMode,
       onStream: options.onStream,
       openaiApiKey: options.openaiApiKey ?? resolveOpenaiApiKey(),
     };
@@ -27,6 +28,7 @@ export class CodexProvider implements Provider {
       cwd: options.cwd,
       sessionId: options.sessionId,
       model: options.model,
+      permissionMode: options.permissionMode,
       onStream: options.onStream,
       openaiApiKey: options.openaiApiKey ?? resolveOpenaiApiKey(),
     };