diff --git a/docs/get-started/configuration.md b/docs/get-started/configuration.md
index 255e828571..948b1be04f 100644
--- a/docs/get-started/configuration.md
+++ b/docs/get-started/configuration.md
@@ -668,7 +668,7 @@ their corresponding top-level category object in your `settings.json` file.
     integration. When enabled, tools automatically respect policy engine
     decisions (ALLOW/DENY/ASK_USER) without requiring individual tool
     implementations.
-  - **Default:** `false`
+  - **Default:** `true`
   - **Requires restart:** Yes
 
 - **`tools.enableHooks`** (boolean):
diff --git a/packages/cli/src/config/config.test.ts b/packages/cli/src/config/config.test.ts
index bfb6967bef..2ec764a991 100644
--- a/packages/cli/src/config/config.test.ts
+++ b/packages/cli/src/config/config.test.ts
@@ -632,6 +632,14 @@ describe('loadCliConfig', () => {
       DEFAULT_FILE_FILTERING_OPTIONS.respectGeminiIgnore,
     );
   });
+
+  it('should default enableMessageBusIntegration to true when unconfigured', async () => {
+    process.argv = ['node', 'script.js'];
+    const argv = await parseArguments({} as Settings);
+    const settings: Settings = {};
+    const config = await loadCliConfig(settings, 'test-session', argv);
+    expect(config['enableMessageBusIntegration']).toBe(true);
+  });
 });
 
 describe('Hierarchical Memory Loading (config.ts) - Placeholder Suite', () => {
diff --git a/packages/cli/src/config/config.ts b/packages/cli/src/config/config.ts
index 7625a68d5d..d55b58adc2 100755
--- a/packages/cli/src/config/config.ts
+++ b/packages/cli/src/config/config.ts
@@ -513,7 +513,7 @@ export async function loadCliConfig(
   );
 
   const enableMessageBusIntegration =
-    settings.tools?.enableMessageBusIntegration ?? false;
+    settings.tools?.enableMessageBusIntegration ?? true;
 
   const allowedTools = argv.allowedTools || settings.tools?.allowed || [];
   const allowedToolsSet = new Set(allowedTools);
diff --git a/packages/cli/src/config/settingsSchema.ts b/packages/cli/src/config/settingsSchema.ts
index 8821deab7c..453f449697 100644
--- a/packages/cli/src/config/settingsSchema.ts
+++ b/packages/cli/src/config/settingsSchema.ts
@@ -1055,7 +1055,7 @@ const SETTINGS_SCHEMA = {
         label: 'Enable Message Bus Integration',
         category: 'Tools',
         requiresRestart: true,
-        default: false,
+        default: true,
         description: oneLine`
           Enable policy-based tool confirmation via message bus integration.
           When enabled, tools automatically respect policy engine decisions (ALLOW/DENY/ASK_USER) without requiring individual tool implementations.
diff --git a/schemas/settings.schema.json b/schemas/settings.schema.json
index dbac18cf55..ba179f888a 100644
--- a/schemas/settings.schema.json
+++ b/schemas/settings.schema.json
@@ -1081,8 +1081,8 @@
         "enableMessageBusIntegration": {
           "title": "Enable Message Bus Integration",
           "description": "Enable policy-based tool confirmation via message bus integration. When enabled, tools automatically respect policy engine decisions (ALLOW/DENY/ASK_USER) without requiring individual tool implementations.",
-          "markdownDescription": "Enable policy-based tool confirmation via message bus integration. When enabled, tools automatically respect policy engine decisions (ALLOW/DENY/ASK_USER) without requiring individual tool implementations.\n\n- Category: `Tools`\n- Requires restart: `yes`\n- Default: `false`",
-          "default": false,
+          "markdownDescription": "Enable policy-based tool confirmation via message bus integration. When enabled, tools automatically respect policy engine decisions (ALLOW/DENY/ASK_USER) without requiring individual tool implementations.\n\n- Category: `Tools`\n- Requires restart: `yes`\n- Default: `true`",
+          "default": true,
           "type": "boolean"
         },
         "enableHooks": {