@alexkroman1/aai-ui

The browser client for aai voice agents: React 19 components, hooks, and a framework-agnostic session core (WebSocket + microphone + playback).

npm i @alexkroman1/aai-ui react react-dom
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Every agent gets this UI for free — aai dev and deployed agents serve a default client built from this package. Install it directly when the agent has its own client.tsx.

A custom client

client() mounts the default chat shell with your sidebar, or replaces the whole UI with a custom component:

import "@alexkroman1/aai-ui/styles.css";
import { client, useAgentState, useTheme } from "@alexkroman1/aai-ui";

type OrderView = { items: string[]; total: string };

function OrderSidebar() {
  const theme = useTheme();
  // Server state projected by the agent's `syncState`, pushed after every
  // tool call.
  const order = useAgentState<OrderView>() ?? { items: [], total: "$0.00" };
  return (
    <div style={{ color: theme.text }}>
      {order.items.map((item) => (
        <div key={item}>{item}</div>
      ))}
      <strong style={{ color: theme.primary }}>{order.total}</strong>
    </div>
  );
}

client({ sidebar: <OrderSidebar /> });
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Hooks

Inside components rendered by client():

• useSession() — connection state, transcript, connect/disconnect.
• useAgentState<T>() — the agent's syncState projection, live.
• useToolResult(name, cb) / useToolCallStart(name, cb) — observe tool calls as they run (e.g. to render a card per result).
• useEvent(name, cb) — custom events the agent pushes with ctx.send.
• useTheme() — the resolved theme colors for custom components.

For a non-React integration, createSessionCore() exposes the same session as a plain store with an immutable snapshot per change.

Documentation

Full API reference: https://alexkroman.github.io/agent/