---
title: "Tutorial: Build a Multi-Conversation Chat App"
description: "Build a chat application with persistent conversation threads using useThreads and CopilotChat — create, switch, rename, and archive conversations with realtime sync."
icon: "lucide/MessageSquareMore"
doc_type: tutorial
---


## What you'll build

A chat application with a thread sidebar — similar to ChatGPT or Claude's conversation list. Users can create new conversations, switch between them, rename them, and archive old ones. All thread metadata syncs in realtime across tabs.

## What you'll learn

- How to list and manage threads with `useThreads`
- How to wire thread selection into `CopilotChat` via `threadId`
- How to create new threads by clearing the active thread
- How to add rename and archive actions to each thread
- How pagination works for users with many conversations

## Prerequisites

- Node.js 20+
- A CopilotKit project with the Enterprise Intelligence Platform configured
- `@copilotkit/react-core` v1.56+

<OpsPlatformCTA
  variant="inline"
  title="Need an Intelligence Platform project?"
  body="The free Developer tier on Copilot Cloud has everything this tutorial uses — threads, realtime sync, and a license key."
  surface="docs_tutorial_multi_conversation_chat"
/>

## Steps

<Steps>
  <Step>
    ### Scaffold the layout

    Create a two-panel layout: a sidebar for the thread list on the left, and the chat area on the right. We'll use a simple flexbox layout.

    ```tsx title="App.tsx"
    import { CopilotKit } from "@copilotkit/react-core/v2";

    export default function App() {
      return (
        <CopilotKit runtimeUrl="/api/copilotkit">
          <div className="flex h-screen">
            <aside className="w-72 border-r overflow-y-auto">
              <ThreadSidebar />
            </aside>
            <main className="flex-1">
              <ChatPanel />
            </main>
          </div>
        </CopilotKit>
      );
    }
    ```
  </Step>

  <Step>
    ### Build the thread sidebar

    Use `useThreads` to fetch the thread list and render it. Each thread shows its name (or "New conversation" if unnamed) and the time it was last updated.

    ```tsx title="ThreadSidebar.tsx"
    import { useThreads } from "@copilotkit/react-core/v2"; // [!code highlight]
    import { useState } from "react";

    export function ThreadSidebar() {
      const { // [!code highlight:5]
        threads,
        isLoading,
        renameThread,
        archiveThread,
      } = useThreads({ agentId: "my-agent" });

      if (isLoading) {
        return <div className="p-4 text-sm text-gray-500">Loading...</div>;
      }

      return (
        <div className="flex flex-col">
          <button
            className="m-3 p-2 rounded bg-blue-600 text-white text-sm"
            onClick={() => {
              // Clear active thread to start a new conversation
              window.dispatchEvent(new CustomEvent("new-thread"));
            }}
          >
            New conversation
          </button>

          {threads.map((thread) => (
            <ThreadRow
              key={thread.id}
              thread={thread}
              onRename={(name) => renameThread(thread.id, name)}
              onArchive={() => archiveThread(thread.id)}
            />
          ))}
        </div>
      );
    }
    ```
  </Step>

  <Step>
    ### Add thread row with actions

    Each row needs a click handler to select the thread, plus rename and archive actions. We'll use a simple inline editing pattern for rename.

    ```tsx title="ThreadRow.tsx"
    import { useState } from "react";
    import type { Thread } from "@copilotkit/react-core/v2";

    interface ThreadRowProps {
      thread: Thread;
      onRename: (name: string) => void;
      onArchive: () => void;
    }

    export function ThreadRow({ thread, onRename, onArchive }: ThreadRowProps) {
      const [isEditing, setIsEditing] = useState(false);
      const [editName, setEditName] = useState(thread.name ?? "");

      const displayName = thread.name || "New conversation";
      const timeAgo = new Date(thread.updatedAt).toLocaleDateString();

      return (
        <div
          className="flex items-center justify-between px-3 py-2 hover:bg-gray-100 cursor-pointer group"
          onClick={() => {
            window.dispatchEvent(
              new CustomEvent("select-thread", { detail: thread.id })
            );
          }}
        >
          <div className="flex-1 min-w-0">
            {isEditing ? (
              <input
                className="w-full text-sm border rounded px-1"
                value={editName}
                onChange={(e) => setEditName(e.target.value)}
                onBlur={() => {
                  onRename(editName);
                  setIsEditing(false);
                }}
                onKeyDown={(e) => {
                  if (e.key === "Enter") {
                    onRename(editName);
                    setIsEditing(false);
                  }
                }}
                autoFocus
                onClick={(e) => e.stopPropagation()}
              />
            ) : (
              <>
                <div className="text-sm truncate">{displayName}</div>
                <div className="text-xs text-gray-400">{timeAgo}</div>
              </>
            )}
          </div>

          <div className="hidden group-hover:flex gap-1 ml-2">
            <button
              className="text-xs text-gray-500 hover:text-gray-700"
              onClick={(e) => {
                e.stopPropagation();
                setIsEditing(true);
              }}
            >
              Rename
            </button>
            <button
              className="text-xs text-gray-500 hover:text-red-600"
              onClick={(e) => {
                e.stopPropagation();
                onArchive();
              }}
            >
              Archive
            </button>
          </div>
        </div>
      );
    }
    ```
  </Step>

  <Step>
    ### Wire up the chat panel

    The chat panel listens for thread selection events and passes the active `threadId` to `CopilotChat`. When no thread is selected, starting a conversation creates a new thread automatically.

    ```tsx title="ChatPanel.tsx"
    import { CopilotChat } from "@copilotkit/react-core/v2"; // [!code highlight]
    import { useState, useEffect } from "react";

    export function ChatPanel() {
      const [activeThreadId, setActiveThreadId] = useState<string | undefined>();

      useEffect(() => {
        const handleSelect = (e: CustomEvent) => setActiveThreadId(e.detail);
        const handleNew = () => setActiveThreadId(undefined);

        window.addEventListener("select-thread", handleSelect as EventListener);
        window.addEventListener("new-thread", handleNew);

        return () => {
          window.removeEventListener("select-thread", handleSelect as EventListener);
          window.removeEventListener("new-thread", handleNew);
        };
      }, []);

      return (
        <CopilotChat
          threadId={activeThreadId} {/* [!code highlight] */}
          className="h-full"
        />
      );
    }
    ```

    When `threadId` is `undefined`, the chat starts a fresh conversation. When set to an existing thread ID, it loads that thread's message history and reconnects to any active agent stream.
  </Step>

  <Step>
    ### Add pagination (optional)

    If your users accumulate many conversations, add a "Load more" button at the bottom of the sidebar using the `limit` parameter.

    ```tsx title="ThreadSidebar.tsx"
    const {
      threads,
      isLoading,
      hasMoreThreads, // [!code highlight]
      isFetchingMoreThreads, // [!code highlight]
      fetchMoreThreads, // [!code highlight]
      renameThread,
      archiveThread,
    } = useThreads({
      agentId: "my-agent",
      limit: 25, // [!code highlight]
    });

    // At the bottom of the thread list:
    {hasMoreThreads && (
      <button
        className="m-3 p-2 text-sm text-gray-500 hover:text-gray-700"
        onClick={fetchMoreThreads}
        disabled={isFetchingMoreThreads}
      >
        {isFetchingMoreThreads ? "Loading..." : "Load older conversations"}
      </button>
    )}
    ```
  </Step>
</Steps>

## What's next

You now have a working multi-conversation chat app with persistent threads. Thread names are auto-generated by the LLM after the first message — you'll see them appear in the sidebar automatically. Here are some ideas for extending further:

- **Search** — add a search input that filters threads by name
- **Unread indicators** — track which threads have new messages since the user last viewed them
- **Drag to reorder** — let users pin important threads to the top
- **Archive view** — add a toggle to show archived threads using `includeArchived: true`

## Next steps

- **Step-by-step guide:** [Threads](/threads) — the concise how-to for thread management
- **Understand how it works:** [How Threads & Persistence Work](/learn/threads) — architecture, event replay model, and WebSocket sync
- **API reference:** [useThreads](/reference/v2/hooks/useThreads) — parameters, return values, types

