Migrate To V2 - Copilotkit

Overview

CopilotKit V2 consolidates the frontend into a single package. Both hooks and UI components are now exported from @copilotkit/react-core/v2. Your backend does not need any changes.

What's changing:

Before	After
`@copilotkit/react-core`	`@copilotkit/react-core/v2`
`@copilotkit/react-ui`	`@copilotkit/react-core/v2`
`@copilotkit/react-ui/styles.css`	`@copilotkit/react-core/v2/styles.css`

What's NOT changing:

Backend packages (@copilotkit/runtime, etc.) — no changes needed
Your CopilotRuntime configuration — stays the same
Agent definitions and backend setup — stays the same

Migration Steps

<Steps> <Step> ### Update `@copilotkit/react-core` imports

Replace imports from @copilotkit/react-core with @copilotkit/react-core/v2.

Before

tsx

import { CopilotKit } from "@copilotkit/react-core";
import { useCopilotReadable, useCopilotAction } from "@copilotkit/react-core";

After

tsx

import { CopilotKitProvider } from "@copilotkit/react-core/v2";
import { useAgent } from "@copilotkit/react-core/v2";

</Step> <Step> ### Replace `@copilotkit/react-ui` imports

UI components like CopilotChat, CopilotSidebar, and CopilotPopup are now exported from @copilotkit/react-core/v2.

Before

tsx

import { CopilotPopup } from "@copilotkit/react-ui";
import { CopilotSidebar } from "@copilotkit/react-ui";
import { CopilotChat } from "@copilotkit/react-ui";

After

tsx

import { CopilotPopup } from "@copilotkit/react-core/v2";
import { CopilotSidebar } from "@copilotkit/react-core/v2";
import { CopilotChat } from "@copilotkit/react-core/v2";

</Step> <Step> ### Update your styles import

Before

tsx

import "@copilotkit/react-ui/styles.css";

After

tsx

import "@copilotkit/react-core/v2/styles.css";

</Step> <Step> ### Upgrade `@ag-ui/client` (if using directly)

If you import from @ag-ui/client directly, upgrade to the latest version:

bash

npm install @ag-ui/client@latest

Note: If you only use CopilotKit's React packages, @ag-ui/client types are already re-exported from @copilotkit/react-core/v2 and you don't need a separate install.

</Step> </Steps>

Full Example

Before

tsx

import { CopilotKit } from "@copilotkit/react-core";
import { CopilotPopup } from "@copilotkit/react-ui";
import "@copilotkit/react-ui/styles.css";

export function App() {
  return (
    <CopilotKit runtimeUrl="/api/copilotkit">
      <YourApp />
      <CopilotPopup />
    </CopilotKit>
  );
}

After

tsx

import { CopilotKitProvider, CopilotPopup } from "@copilotkit/react-core/v2";
import "@copilotkit/react-core/v2/styles.css";

export function App() {
  return (
    <CopilotKitProvider runtimeUrl="/api/copilotkit">
      <YourApp />
      <CopilotPopup />
    </CopilotKitProvider>
  );
}