diff --git a/ui/src/components/onboarding-memory-import.ts b/ui/src/components/onboarding-memory-import.ts
index bba3464ed121..3e8301b7f0c3 100644
--- a/ui/src/components/onboarding-memory-import.ts
+++ b/ui/src/components/onboarding-memory-import.ts
@@ -11,6 +11,7 @@ import type { ApplicationContext } from "../app/context.ts";
 import { hasOperatorAdminAccess } from "../app/operator-access.ts";
 import { t } from "../i18n/index.ts";
 import { formatUiError, formatUiExternalText } from "../lib/format-error.ts";
+import { generateUUID } from "../lib/uuid.ts";
 import { OpenClawLightDomElement } from "../lit/openclaw-element.ts";
 import { SubscriptionsController } from "../lit/subscriptions-controller.ts";
 import "../styles/onboarding-memory-import.css";
@@ -27,15 +28,6 @@ function toErrorMessage(error: unknown): string {
   return formatUiError(error, t("onboarding.memoryImport.unknownError"));
 }
 
-function createIdempotencyKey(): string {
-  if (typeof globalThis.crypto.randomUUID === "function") {
-    return globalThis.crypto.randomUUID();
-  }
-  return [...globalThis.crypto.getRandomValues(new Uint32Array(4))]
-    .map((value) => value.toString(16).padStart(8, "0"))
-    .join("");
-}
-
 function plannedItems(provider: MemoryMigrationProviderPlan) {
   return provider.items.filter((item) => item.status === "planned");
 }
@@ -244,7 +236,7 @@ class OnboardingMemoryImport extends OpenClawLightDomElement {
         const result = await client.request<MigrationsMemoryApplyResult>(
           "migrations.memory.apply",
           {
-            idempotencyKey: createIdempotencyKey(),
+            idempotencyKey: generateUUID(),
             agentId,
             providerId: provider.providerId,
             planFingerprint,
diff --git a/ui/src/pages/custodian/custodian-session-identity.ts b/ui/src/pages/custodian/custodian-session-identity.ts
index f50f8cb3b2f1..6d10961420ec 100644
--- a/ui/src/pages/custodian/custodian-session-identity.ts
+++ b/ui/src/pages/custodian/custodian-session-identity.ts
@@ -1,4 +1,5 @@
 import type { ApplicationGateway } from "../../app/context.ts";
+import { generateUUID } from "../../lib/uuid.ts";
 import { getSafeLocalStorage } from "../../local-storage.ts";
 
 const CUSTODIAN_SESSION_STORAGE_KEY = "openclaw.custodian.session.v1";
@@ -8,13 +9,7 @@ function isStoredCustodianSessionId(value: string | null): value is string {
 }
 
 export function createCustodianSessionId(): string {
-  if (typeof crypto.randomUUID === "function") {
-    return `control-ui-onboarding-${crypto.randomUUID()}`;
-  }
-  const suffix = [...crypto.getRandomValues(new Uint32Array(4))]
-    .map((value) => value.toString(16).padStart(8, "0"))
-    .join("");
-  return `control-ui-onboarding-${suffix}`;
+  return `control-ui-onboarding-${generateUUID()}`;
 }
 
 export function persistCustodianSessionId(sessionId: string): void {
diff --git a/ui/src/pages/memory-import/memory-import-page.ts b/ui/src/pages/memory-import/memory-import-page.ts
index 0764b764a7d0..a78a29ff86e8 100644
--- a/ui/src/pages/memory-import/memory-import-page.ts
+++ b/ui/src/pages/memory-import/memory-import-page.ts
@@ -15,6 +15,7 @@ import { t } from "../../i18n/index.ts";
 import { listSelectableAgents } from "../../lib/agents/display.ts";
 import { formatUiError } from "../../lib/format-error.ts";
 import { isGatewayMethodAdvertised } from "../../lib/gateway-methods.ts";
+import { generateUUID } from "../../lib/uuid.ts";
 import { OpenClawLightDomElement } from "../../lit/openclaw-element.ts";
 import { SubscriptionsController } from "../../lit/subscriptions-controller.ts";
 import {
@@ -41,15 +42,6 @@ function toErrorMessage(error: unknown): string {
   return formatUiError(error, "request failed");
 }
 
-function createIdempotencyKey(): string {
-  if (typeof globalThis.crypto.randomUUID === "function") {
-    return globalThis.crypto.randomUUID();
-  }
-  return [...globalThis.crypto.getRandomValues(new Uint32Array(4))]
-    .map((value) => value.toString(16).padStart(8, "0"))
-    .join("");
-}
-
 export class MemoryImportPage extends OpenClawLightDomElement {
   @consume({ context: applicationContext, subscribe: true })
   private context!: ApplicationContext;
@@ -275,7 +267,7 @@ export class MemoryImportPage extends OpenClawLightDomElement {
       planFingerprint,
       itemIds: [...itemIds],
       overwrite: this.replaceExisting,
-      idempotencyKey: createIdempotencyKey(),
+      idempotencyKey: generateUUID(),
       attempted: false,
     };
   }