diff --git a/typescript-sdk/integrations/langgraph/src/index.ts b/typescript-sdk/integrations/langgraph/src/index.ts
index 9f6528f9..7edfdbc4 100644
--- a/typescript-sdk/integrations/langgraph/src/index.ts
+++ b/typescript-sdk/integrations/langgraph/src/index.ts
@@ -10,7 +10,7 @@ import {
   Config,
   Interrupt,
 } from "@langchain/langgraph-sdk";
-import { randomUUID } from "node:crypto";
+import { randomUUID } from "@ag-ui/client";
 import { RemoveMessage } from "@langchain/core/messages";
 import {
   LangGraphPlatformMessage,
diff --git a/typescript-sdk/integrations/mastra/src/index.ts b/typescript-sdk/integrations/mastra/src/index.ts
index 88a6be67..e48bda01 100644
--- a/typescript-sdk/integrations/mastra/src/index.ts
+++ b/typescript-sdk/integrations/mastra/src/index.ts
@@ -27,7 +27,7 @@ import { registerApiRoute } from "@mastra/core/server";
 import type { Agent as LocalMastraAgent } from "@mastra/core/agent";
 import type { Context } from "hono";
 import { RuntimeContext } from "@mastra/core/runtime-context";
-import { randomUUID } from "crypto";
+import { randomUUID } from "@ag-ui/client";
 import { Observable } from "rxjs";
 import { MastraClient } from "@mastra/client-js";
 type RemoteMastraAgent = ReturnType<MastraClient["getAgent"]>;
diff --git a/typescript-sdk/integrations/vercel-ai-sdk/src/index.ts b/typescript-sdk/integrations/vercel-ai-sdk/src/index.ts
index b06664f3..9f30bc37 100644
--- a/typescript-sdk/integrations/vercel-ai-sdk/src/index.ts
+++ b/typescript-sdk/integrations/vercel-ai-sdk/src/index.ts
@@ -26,7 +26,7 @@ import {
   ToolChoice,
   ToolSet,
 } from "ai";
-import { randomUUID } from "crypto";
+import { randomUUID } from "@ag-ui/client";
 import { z } from "zod";
 
 type ProcessedEvent =
diff --git a/typescript-sdk/packages/client/src/index.ts b/typescript-sdk/packages/client/src/index.ts
index dfad3575..31bb4c82 100644
--- a/typescript-sdk/packages/client/src/index.ts
+++ b/typescript-sdk/packages/client/src/index.ts
@@ -4,4 +4,5 @@ export * from "./transform";
 export * from "./run";
 export * from "./legacy";
 export * from "./agent";
+export * from "./utils";
 export * from "@ag-ui/core";
diff --git a/typescript-sdk/packages/client/src/utils.ts b/typescript-sdk/packages/client/src/utils.ts
index 675e9f70..169edace 100644
--- a/typescript-sdk/packages/client/src/utils.ts
+++ b/typescript-sdk/packages/client/src/utils.ts
@@ -1,3 +1,5 @@
+import { v4 as uuidv4 } from 'uuid';
+
 export const structuredClone_ = (obj: any) => {
   if (typeof structuredClone === "function") {
     return structuredClone(obj);
@@ -9,3 +11,11 @@ export const structuredClone_ = (obj: any) => {
     return { ...obj };
   }
 };
+
+/**
+ * Generate a random UUID v4
+ * Cross-platform compatible (Node.js, browsers, React Native)
+ */
+export function randomUUID(): string {
+  return uuidv4();
+}