diff --git a/.changeset/permission-mode-reminder-env.md b/.changeset/permission-mode-reminder-env.md
new file mode 100644
index 00000000000..73d5c3c462b
--- /dev/null
+++ b/.changeset/permission-mode-reminder-env.md
@@ -0,0 +1,5 @@
+---
+"@moonshot-ai/kimi-code": patch
+---
+
+Add the `KIMI_CODE_PERMISSION_MODE_REMINDER` environment variable: set it to `0` to stop injecting the auto permission-mode reminders into the model context.
diff --git a/packages/agent-core-v2/src/agent/permissionMode/permissionModeService.ts b/packages/agent-core-v2/src/agent/permissionMode/permissionModeService.ts
index f5f1e001531..1d3f9ad67a6 100644
--- a/packages/agent-core-v2/src/agent/permissionMode/permissionModeService.ts
+++ b/packages/agent-core-v2/src/agent/permissionMode/permissionModeService.ts
@@ -3,6 +3,8 @@ import { Service } from '#/_base/di/service';
 import { LifecycleScope } from '#/app/scopes';
 import { ScopeActivation, registerScopedService } from '#/_base/di/scope';
 import { Emitter, type Event } from '#/_base/event';
+import { parseBooleanEnv } from '#/_base/utils/env';
+import { IBootstrapService } from '#/app/bootstrap/bootstrap';
 import { PermissionModeInjection } from '#/agent/permissionMode/injection/permissionModeInjection';
 import { IAgentReminderService } from '#/features/reminder/reminderService';
 import { IAgentScopeContext } from '#/agent/scopeContext/scopeContext';
@@ -20,6 +22,8 @@ import {
   PermissionSetMode,
 } from './permissionModeOps';
 
+export const PERMISSION_MODE_REMINDER_ENV = 'KIMI_CODE_PERMISSION_MODE_REMINDER';
+
 export class AgentPermissionModeService extends Service implements IAgentPermissionModeService {
   declare readonly _serviceBrand: undefined;
 
@@ -33,11 +37,14 @@ export class AgentPermissionModeService extends Service implements IAgentPermiss
     @IAgentReminderService reminder: IAgentReminderService,
     @ITelemetryService private readonly telemetry: ITelemetryService,
     @IAgentStateService private readonly agentState: IAgentStateService,
+    @IBootstrapService bootstrap: IBootstrapService,
   ) {
     super();
     this.agentState.contributeState(permissionModeKey);
     this.agentState.contributeState(permissionModeConfiguredKey);
-    this._register(new PermissionModeInjection(this, reminder, this.agentState));
+    if (parseBooleanEnv(bootstrap.getEnv(PERMISSION_MODE_REMINDER_ENV)) !== false) {
+      this._register(new PermissionModeInjection(this, reminder, this.agentState));
+    }
   }
 
   get mode(): PermissionMode {
diff --git a/packages/agent-core-v2/test/agent/permissionMode/permissionMode.test.ts b/packages/agent-core-v2/test/agent/permissionMode/permissionMode.test.ts
index 3f83c48c89f..30602f482aa 100644
--- a/packages/agent-core-v2/test/agent/permissionMode/permissionMode.test.ts
+++ b/packages/agent-core-v2/test/agent/permissionMode/permissionMode.test.ts
@@ -7,11 +7,15 @@ import { IAgentReminderService } from '#/features/reminder/reminderService';
 import type { ContextInjectionProvider } from '#/features/reminder/types';
 import { IAgentPermissionModeService } from '#/agent/permissionMode/permissionMode';
 import { PermissionModeInjection } from '#/agent/permissionMode/injection/permissionModeInjection';
-import { AgentPermissionModeService } from '#/agent/permissionMode/permissionModeService';
+import {
+  AgentPermissionModeService,
+  PERMISSION_MODE_REMINDER_ENV,
+} from '#/agent/permissionMode/permissionModeService';
 import { permissionModeKey } from '#/agent/permissionMode/permissionModeOps';
 import type { PermissionMode } from '#/agent/permissionPolicy/types';
 import { IAgentStateService } from '#/agent/state/agentState';
 import { AgentStateService } from '#/agent/state/agentStateService';
+import { IBootstrapService } from '#/app/bootstrap/bootstrap';
 import { AppendLogStore } from '#/persistence/backends/node-fs/appendLogStore';
 import { InMemoryStorageService } from '#/persistence/backends/memory/inMemoryStorageService';
 import { IAppendLogStore } from '#/persistence/interface/appendLogStore';
@@ -19,6 +23,8 @@ import { IFileSystemStorageService } from '#/persistence/interface/storage';
 import { IEventDispatcher } from '#/state/eventDispatcher';
 import { AGENT_WIRE_RECORD_KEY, type WireRecord } from '#/wire/record';
 
+import { stubBootstrap } from '../../app/bootstrap/stubs';
+
 import {
   registerTestAgentWire,
   registerTestEventDispatcher,
@@ -55,15 +61,18 @@ let log: IAppendLogStore;
 let dispatcher: IEventDispatcher;
 let svc: IAgentPermissionModeService;
 let reminderLive = false;
+let bootstrapEnv: NodeJS.ProcessEnv;
 
 beforeEach(() => {
   registeredInjection = undefined;
   reminderLive = false;
+  bootstrapEnv = {};
   disposables = new DisposableStore();
   ix = disposables.add(new TestInstantiationService());
   ix.stub(IFileSystemStorageService, new InMemoryStorageService());
   ix.set(IAppendLogStore, new SyncDescriptor(AppendLogStore));
   ix.stub(IAgentReminderService, injectorStub);
+  ix.stub(IBootstrapService, stubBootstrap('/tmp/kimi-home', bootstrapEnv));
   ix.set(IAgentStateService, new AgentStateService());
   ix.set(IAgentPermissionModeService, new SyncDescriptor(AgentPermissionModeService));
   log = ix.get(IAppendLogStore);
@@ -241,4 +250,51 @@ describe('AgentPermissionModeService (wire-backed)', () => {
     expect(written[0]).toMatchObject({ type: 'metadata' });
     expect(written.slice(1)).toEqual([{ type: 'permission.set_mode', mode: 'auto' }]);
   });
+
+  it('skips the auto-mode reminder injection when KIMI_CODE_PERMISSION_MODE_REMINDER is disabled', () => {
+    registeredInjection = undefined;
+    const ix2 = disposables.add(new TestInstantiationService());
+    ix2.stub(IFileSystemStorageService, new InMemoryStorageService());
+    ix2.set(IAppendLogStore, new SyncDescriptor(AppendLogStore));
+    ix2.stub(IAgentReminderService, injectorStub);
+    ix2.stub(
+      IBootstrapService,
+      stubBootstrap('/tmp/kimi-home', { [PERMISSION_MODE_REMINDER_ENV]: '0' }),
+    );
+    ix2.set(IAgentStateService, new AgentStateService());
+    ix2.set(IAgentPermissionModeService, new SyncDescriptor(AgentPermissionModeService));
+    registerTestAgentWire(ix2, testWireScope(SCOPE, 'permission-mode-no-reminder'), {
+      log: ix2.get(IAppendLogStore),
+    });
+    registerTestEventDispatcher(ix2);
+
+    const svc2 = ix2.get(IAgentPermissionModeService);
+
+    expect(registeredInjection).toBeUndefined();
+    svc2.setMode('auto');
+    expect(svc2.mode).toBe('auto');
+    expect(registeredInjection).toBeUndefined();
+  });
+
+  it('keeps the auto-mode reminder injection when the env override enables it explicitly', () => {
+    registeredInjection = undefined;
+    const ix2 = disposables.add(new TestInstantiationService());
+    ix2.stub(IFileSystemStorageService, new InMemoryStorageService());
+    ix2.set(IAppendLogStore, new SyncDescriptor(AppendLogStore));
+    ix2.stub(IAgentReminderService, injectorStub);
+    ix2.stub(
+      IBootstrapService,
+      stubBootstrap('/tmp/kimi-home', { [PERMISSION_MODE_REMINDER_ENV]: '1' }),
+    );
+    ix2.set(IAgentStateService, new AgentStateService());
+    ix2.set(IAgentPermissionModeService, new SyncDescriptor(AgentPermissionModeService));
+    registerTestAgentWire(ix2, testWireScope(SCOPE, 'permission-mode-reminder-on'), {
+      log: ix2.get(IAppendLogStore),
+    });
+    registerTestEventDispatcher(ix2);
+
+    ix2.get(IAgentPermissionModeService);
+
+    expect((registeredInjection as { readonly name: string } | undefined)?.name).toBe('permission_mode');
+  });
 });
diff --git a/packages/agent-core-v2/test/session/agentLifecycle/agentLifecycle.test.ts b/packages/agent-core-v2/test/session/agentLifecycle/agentLifecycle.test.ts
index d37297be07a..a464a1c3ab3 100644
--- a/packages/agent-core-v2/test/session/agentLifecycle/agentLifecycle.test.ts
+++ b/packages/agent-core-v2/test/session/agentLifecycle/agentLifecycle.test.ts
@@ -268,6 +268,7 @@ describe('AgentLifecycleService', () => {
       _serviceBrand: undefined,
       homeDir: '/tmp/kimi-agentLifecycle-home',
       cwd: '/tmp/kimi-agentLifecycle-home',
+      getEnv: () => undefined,
     } as unknown as IBootstrapService);
     ix.stub(IFlagService, {
       _serviceBrand: undefined,