MoonshotAI · 7Sageer · Aug 28, 2026 · Aug 28, 2026
diff --git a/.changeset/remove-now-template-variable.md b/.changeset/remove-now-template-variable.md
@@ -0,0 +1,5 @@
+---
+"@moonshot-ai/agent-core-v2": patch
+---
+
+Remove the `${now}` variable from the system prompt template variable table.
diff --git a/docs/en/customization/agents.md b/docs/en/customization/agents.md
@@ -153,7 +153,6 @@ Like the body of a regular agent file, SYSTEM.md is rendered as a template each
 | `${cwd_listing}` | Listing of the working directory |
 | `${os}` | Operating system kind |
 | `${shell}` | Shell name and path, for example `bash (\`/bin/bash\`)` |
-| `${now}` | Current time in ISO format |
 | `${additional_dirs_info}` | Additional directories added to the workspace; empty when there are none |
 | `${base_prompt}` | The default system prompt. Inside `SYSTEM.md` itself this is the built-in default; inside an agent file it is the effective default — the built-in default, or your `SYSTEM.md` override when present |
 | `${plugin_sections}` | A complete Plugin Instructions block contributed by enabled plugins; empty when no enabled plugin contributes instructions |

diff --git a/docs/zh/customization/agents.md b/docs/zh/customization/agents.md
@@ -153,7 +153,6 @@ SYSTEM.md 是纯 Markdown 正文，不需要也不读取 Frontmatter。文件缺
 | `${cwd_listing}` | 工作目录的文件列表 |
 | `${os}` | 操作系统类型 |
 | `${shell}` | Shell 名称与路径，例如 `bash (\`/bin/bash\`)` |
-| `${now}` | 当前时间（ISO 格式） |
 | `${additional_dirs_info}` | 加入工作区的额外目录信息；没有时为空 |
 | `${base_prompt}` | 默认系统提示词。在 `SYSTEM.md` 中指内置默认提示词；在 Agent 文件中指有效默认提示词（内置默认，或存在时为你的 `SYSTEM.md` 覆盖） |
 | `${plugin_sections}` | 已启用 plugin 提供的完整 Plugin Instructions 块；没有已启用 plugin 提供指令时为空 |

diff --git a/packages/agent-core-v2/docs/state-manifest.d.ts b/packages/agent-core-v2/docs/state-manifest.d.ts
@@ -1316,15 +1316,6 @@ export interface AgentStateSnapshot {
     readonly systemPrompt: string;
     readonly environmentDisclosure?: /* EnvironmentDisclosureSnapshot — packages/agent-core-v2/src/app/agentProfileCatalog/agentProfileCatalog.ts */ {
       readonly cwd: string;
-      readonly date: {
-        readonly disclosed: true;
-        readonly value: {
-          readonly localDate: string;
-          readonly timeZone: string;
-        };
-      } | {
-        readonly disclosed: false;
-      };
     };
     readonly renderGeneration: number;
     readonly agentsMdPaths?: readonly string[];

diff --git a/packages/agent-core-v2/docs/wire-manifest.d.ts b/packages/agent-core-v2/docs/wire-manifest.d.ts
@@ -98,7 +98,6 @@ interface ConfigUpdatePayload {
   /** EnvironmentDisclosureSnapshot */
   environmentDisclosure?: {
     cwd: string;
-    date: { disclosed: true, value: { localDate: string, timeZone: string } } | { disclosed: false };
   };
   renderGeneration?: number;
   agentsMdPaths?: string[];
@@ -495,7 +494,6 @@ interface ProfileBindPayload {
   /** EnvironmentDisclosureSnapshot */
   environmentDisclosure?: {
     cwd: string;
-    date: { disclosed: true, value: { localDate: string, timeZone: string } } | { disclosed: false };
   };
   renderGeneration?: number;
   agentsMdPaths?: string[];

diff --git a/packages/agent-core-v2/src/agent/profile/profileService.ts b/packages/agent-core-v2/src/agent/profile/profileService.ts
@@ -28,7 +28,6 @@ import { IConfigService } from '#/app/config/config';
 import type { LoopControl } from '#/agent/loop/configSection';
 import { IAgentRuntimeService } from '#/agent/runtimeBinding/agentRuntime';
 import { RuntimeWorkspaceView } from '#/runtime/runtimeWorkspaceView';
-import { IHostClock } from '#/os/interface/hostClock';
 import { ISessionContext } from '#/session/sessionContext/sessionContext';
 import type { ToolSource } from '#/tool/toolContract';
 import { ISessionWorkspaceContext } from '#/session/workspaceContext/workspaceContext';
@@ -150,7 +149,6 @@ export class AgentProfileService extends Disposable implements IAgentProfileServ
     @IModelCatalog private readonly modelCatalog: IModelCatalog,
     @IProtocolAdapterRegistry private readonly protocolAdapters: IProtocolAdapterRegistry,
     @IAgentRuntimeService private readonly runtime: IAgentRuntimeService,
-    @IHostClock private readonly clock: IHostClock,
     @ISessionContext private readonly sessionContext: ISessionContext,
     @IBootstrapService private readonly bootstrap: IBootstrapService,
     @ISessionWorkspaceContext private readonly workspace: ISessionWorkspaceContext,
@@ -816,16 +814,12 @@ export class AgentProfileService extends Disposable implements IAgentProfileServ
     }
     const skills = await this.resolveSkillListing();
     const pluginSections = await this.resolvePluginSections();
-    const now = this.clock.now();
-    const timeZone = this.clock.timeZone();
     return {
       ...base,
       cwd: view.workDir,
       osKind: env.osKind,
       shellName: env.shellName,
       shellPath: env.shellPath,
-      now: now.toISOString(),
-      timeZone,
       skills,
       pluginSections,
       skillActive: this.isToolActiveForProfile(profile, 'Skill'),

diff --git a/packages/agent-core-v2/src/app/agentProfileCatalog/agentProfileCatalog.ts b/packages/agent-core-v2/src/app/agentProfileCatalog/agentProfileCatalog.ts
@@ -23,8 +23,6 @@ export interface AgentProfileContext {
   readonly osKind?: string;
   readonly shellName?: string;
   readonly shellPath?: string;
-  readonly now?: string;
-  readonly timeZone?: string;
   readonly skills?: string;
   readonly skillActive?: boolean;
   readonly pluginSections?: string;
@@ -35,9 +33,6 @@ export interface AgentProfileContext {
 
 export interface EnvironmentDisclosureSnapshot {
   readonly cwd: string;
-  readonly date:
-    | { readonly disclosed: true; readonly value: { readonly localDate: string; readonly timeZone: string } }
-    | { readonly disclosed: false };
 }
 
 export interface SystemPromptRenderResult {
@@ -89,7 +84,7 @@ export function normalizeAgentProfile(input: AgentProfileInput): AgentProfile {
       systemPrompt,
       renderSystemPrompt: (context) => ({
         text: systemPrompt(context),
-        environment: { cwd: context.cwd ?? '', date: { disclosed: false } },
+        environment: { cwd: context.cwd ?? '' },
       }),
     };
   }

diff --git a/packages/agent-core-v2/src/app/agentProfileCatalog/profile-shared.ts b/packages/agent-core-v2/src/app/agentProfileCatalog/profile-shared.ts
@@ -138,7 +138,6 @@ export function systemPromptVars(
     os: context.osKind ?? '',
     windows_notes: context.osKind === 'Windows' ? `\n\n${WINDOWS_NOTES}\n\n` : '',
     shell: shellName.length > 0 ? `${shellName} (\`${shellPath}\`)` : '',
-    now: context.now ?? new Date().toISOString(),
     cwd: context.cwd ?? '',
     cwd_listing: context.cwdListing ?? '',
     agents_md: context.agentsMd ?? '',
@@ -171,10 +170,7 @@ export function renderPromptTemplateResult(
   }
   return {
     text: renderPrompt(template, vars),
-    environment: mergeEnvironmentDisclosure(
-      environmentForTemplate(template, context),
-      baseResult?.environment,
-    ),
+    environment: mergeEnvironmentDisclosure(environmentForTemplate(context), baseResult?.environment),
   };
 }
 
@@ -188,55 +184,18 @@ export function renderSystemPromptResult(
       ...systemPromptVars(context, options),
       role_additional: roleAdditional,
     }),
-    environment: environmentForTemplate(SYSTEM_PROMPT_TEMPLATE, context),
+    environment: environmentForTemplate(context),
   };
 }
 
-function environmentForTemplate(
-  template: string,
-  context: AgentProfileContext,
-): EnvironmentDisclosureSnapshot {
-  const usesNow = template.includes('${now}');
-  const timeZone = context.timeZone ?? localTimeZone();
-  return {
-    cwd: context.cwd ?? '',
-    date: usesNow
-      ? {
-          disclosed: true,
-          value: {
-            localDate: localDateKey(context.now, timeZone),
-            timeZone,
-          },
-        }
-      : { disclosed: false },
-  };
+function environmentForTemplate(context: AgentProfileContext): EnvironmentDisclosureSnapshot {
+  return { cwd: context.cwd ?? '' };
 }
 
 function mergeEnvironmentDisclosure(
   direct: EnvironmentDisclosureSnapshot,
   base: EnvironmentDisclosureSnapshot | undefined,
 ): EnvironmentDisclosureSnapshot {
   if (base === undefined) return direct;
-  return {
-    cwd: direct.cwd || base.cwd,
-    date: direct.date.disclosed ? direct.date : base.date,
-  };
-}
-
-function localDateKey(now: string | undefined, timeZone: string): string {
-  const date = now === undefined ? new Date() : new Date(now);
-  if (Number.isNaN(date.getTime())) return localDateKey(undefined, timeZone);
-  const parts = new Intl.DateTimeFormat('en-US', {
-    timeZone,
-    year: 'numeric',
-    month: '2-digit',
-    day: '2-digit',
-  }).formatToParts(date);
-  const part = (type: Intl.DateTimeFormatPartTypes): string =>
-    parts.find((candidate) => candidate.type === type)?.value ?? '';
-  return `${part('year')}-${part('month')}-${part('day')}`;
-}
-
-function localTimeZone(): string {
-  return Intl.DateTimeFormat().resolvedOptions().timeZone || 'UTC';
+  return { cwd: direct.cwd || base.cwd };
 }
diff --git a/packages/agent-core-v2/src/features/dateChange/dateChangeAgentRuntime.ts b/packages/agent-core-v2/src/features/dateChange/dateChangeAgentRuntime.ts
@@ -76,16 +76,6 @@ const dateChangeInjection = fromCallback(({
       environment.cwd !== sessionContext.cwd
     );
   };
-  const dateFromProfile = (): DateDisclosure | undefined => {
-    if (!belongsToCurrentCwd()) return undefined;
-    const profileData = profile.data();
-    const date = profileData.environmentDisclosure?.date;
-    if (!date?.disclosed) return undefined;
-    return {
-      ...date.value,
-      renderGeneration: profileData.renderGeneration ?? 0,
-    };
-  };
   const registration = reminder.register<DateInjectionDisclosure>(
     DATE_CHANGE_INJECTION_VARIANT,
     ({
@@ -95,13 +85,8 @@ const dateChangeInjection = fromCallback(({
       if (!belongsToCurrentCwd()) return undefined;
       const renderGeneration = profileData.renderGeneration ?? 0;
       const current = currentDateDisclosure(clock);
-      const profileDate = dateFromProfile();
       const seed = runtime.getLogicState<DateChangeActorContext>().seed;
-      const baseline = pickDisclosureBaseline<DateDisclosure>(
-        lastDisclosure,
-        profileDate,
-        seed,
-      );
+      const baseline = pickDisclosureBaseline<DateDisclosure>(lastDisclosure, seed);
       if (baseline !== undefined && baseline.localDate !== current.localDate) {
         return {
           content: `The date has changed. Today's date is now ${current.localDate}. Rely on this reminder over any earlier date statement for the current date. DO NOT mention this to the user explicitly.`,
@@ -113,7 +98,7 @@ const dateChangeInjection = fromCallback(({
           },
         };
       }
-      if (lastDisclosure !== undefined || profileDate !== undefined) return undefined;
+      if (lastDisclosure !== undefined) return undefined;
       if (seed === undefined) {
         runtime.send({
           type: 'dateChange.disclose',

diff --git a/packages/agent-core-v2/test/agent/profile/binding.test.ts b/packages/agent-core-v2/test/agent/profile/binding.test.ts
@@ -17,7 +17,6 @@ import { BuiltinAgentProfileLoaderService } from '#/app/agentProfileCatalog/buil
 import { registerAgentProfile } from '#/app/agentProfileCatalog/contribution';
 import type { ToolCall } from '#/kosong/contract/message';
 import { IAgentProfileService, type ResolvedAgentProfile } from '#/agent/profile/profile';
-import { IHostClock } from '#/os/interface/hostClock';
 import type { HostFsChange } from '#/os/interface/hostFsWatch';
 import { IAgentAgentsMdReminderService } from '#/agent/agentsMdReminder/agentsMdReminder';
 import { IAgentToolPolicyService } from '#/agent/toolPolicy/toolPolicy';
@@ -26,6 +25,7 @@ import { IAgentToolRegistryService } from '#/agent/toolRegistry/toolRegistry';
 import { SELECT_TOOLS_TOOL_NAME } from '#/agent/toolSelect/toolSelect';
 import { IAtomicDocumentStore, type IAtomicDocumentStore as AtomicDocumentStore } from '#/persistence/interface/atomicDocumentStore';
 import { ISessionAgentProfileCatalog } from '#/session/sessionAgentProfileCatalog/sessionAgentProfileCatalog';
+import { ISessionContext } from '#/session/sessionContext/sessionContext';
 import { ISessionInstructionsProvider } from '#/session/sessionInstructions/instructionsProvider';
 import { ISessionSkillCatalog } from '#/features/skill/session/skillCatalog';
 import { ISessionToolPolicy } from '#/session/sessionToolPolicy/sessionToolPolicy';
@@ -141,21 +141,14 @@ describe('AgentProfileService.bind', () => {
     expect(svc.isRunnable()).toBe(true);
   });
 
-  it('keeps the rendered prompt and disclosure free of clock-dependent content', async () => {
-    const hostClock: IHostClock = {
-      _serviceBrand: undefined,
-      now: () => new Date('2026-07-29T04:00:00.000Z'),
-      timeZone: () => 'Asia/Shanghai',
-    };
-    ctx = createTestAgent(appService(IHostClock, hostClock), hostEnvironmentServices(homeDir));
+  it('binds an environment disclosure snapshot with only the session cwd', async () => {
+    ctx = createTestAgent(hostEnvironmentServices(homeDir));
     const svc = ctx.get(IAgentProfileService);
 
     await svc.bind({ profile: DEFAULT_AGENT_PROFILE_NAME, model: MOCK_MODEL });
 
     expect(svc.getSystemPrompt()).not.toContain('2026-07-29');
-    expect(svc.data().environmentDisclosure).toMatchObject({
-      date: { disclosed: false },
-    });
+    expect(svc.data().environmentDisclosure).toEqual({ cwd: ctx.get(ISessionContext).cwd });
   });
 
   it('persists the complete binding in one journal record', async () => {

diff --git a/packages/agent-core-v2/test/agent/profile/profileOps.test.ts b/packages/agent-core-v2/test/agent/profile/profileOps.test.ts
@@ -352,13 +352,7 @@ describe('AgentProfileService (wire-backed config.update)', () => {
   });
 
   it('persists the rendered prompt and disclosure snapshot in one bind record', async () => {
-    const environment: EnvironmentDisclosureSnapshot = {
-      cwd: '/work',
-      date: {
-        disclosed: true,
-        value: { localDate: '2026-07-29', timeZone: 'Asia/Shanghai' },
-      },
-    };
+    const environment: EnvironmentDisclosureSnapshot = { cwd: '/work' };
     svc.applyBindingSnapshot({
       modelAlias: 'kimi-code',
       profileName: 'agent',
@@ -397,13 +391,7 @@ describe('AgentProfileService (wire-backed config.update)', () => {
   });
 
   it('replays a legacy config.update record with an explicit renderGeneration verbatim', async () => {
-    const environment: EnvironmentDisclosureSnapshot = {
-      cwd: '/work',
-      date: {
-        disclosed: true,
-        value: { localDate: '2026-07-29', timeZone: 'Asia/Shanghai' },
-      },
-    };
+    const environment: EnvironmentDisclosureSnapshot = { cwd: '/work' };
 
     const replay = buildHost('profile-replay-legacy-generation');
     await restoreTestEventDispatcher(