The official web client SDK for Pipecat, an open source Python framework for building voice and multimodal AI applications.

Overview

This monorepo contains two packages:

• client-js: JavaScript/TypeScript SDK for connecting to and communicating with Pipecat servers
• client-react: React components and hooks for building Pipecat applications

The SDK handles:

• Device and media stream management
• Managing bot configuration
• Sending generic actions to the bot
• Handling bot messages and responses
• Managing session state and errors

To connect to a bot, you will need both this SDK and a transport implementation.

It’s also recommended for you to stand up your own server-side endpoints to handle authentication, and passing your bot process secrets (such as service API keys, etc) that would otherwise be compromised on the client.

The entry point for creating a client can be found via:

• Pipecat JS @pipecat-ai/client-js

React context, hooks and components:

• Pipecat React @pipecat-ai/client-react

Transport packages:

For connected use-cases, you must pass a transport instance to the constructor for your chosen protocol or provider.

For example, if you were looking to use WebRTC as a transport layer, you may use a provider like Daily. In this scenario, you’d construct a transport instance and pass it to the client accordingly:

import { RTVIClient } from "@pipecat-ai/client-js";
import { DailyTransport } from "@pipecat-ai/daily-transport";

const DailyTransport = new DailyTransport();
const rtviClient = new RTVIClient({
  transport: DailyTransport,
});

All Pipecat SDKs require a media transport for sending and receiving audio and video data over the Internet. Pipecat Web does not include any transport capabilities out of the box, so you will need to install the package for your chosen provider.

All transport packages (such as DailyTransport) extend from the Transport base class. You can extend this class if you are looking to implement your own or add additional functionality.

Install

Install the Pipecat JS client library

npm install @pipecat-ai/client-js

Optionally, install the React client library

npm install @pipecat-ai/client-react

Lastly, install a transport layer, like Daily

npm install @pipecat-ai/daily-transport

Quickstart

To connect to a bot, you will need both this SDK and a transport implementation.

It’s also recommended for you to stand up your own server-side endpoints to handle authentication, and passing your bot process secrets (such as service API keys, etc) that would otherwise be compromised on the client.

Starter projects:

Creating and starting a session with RTVI Web (using Daily as transport):

import { RTVIClient, RTVIEvent, RTVIMessage } from "@pipecat-ai/client-js";
import { DailyTransport } from "@pipecat-ai/daily-transport";

const DailyTransport = new DailyTransport();

const rtviClient = new RTVIClient({
  transport: DailyTransport,
  params: {
    baseUrl: "https://your-server-side-url",
    services: {
      llm: "together",
      tts: "cartesia",
    },
    config: [
      {
        service: "tts",
        options: [
          { name: "voice", value: "79a125e8-cd45-4c13-8a67-188112f4dd22" },
        ],
      },
      {
        service: "llm",
        options: [
          {
            name: "model",
            value: "meta-llama/Meta-Llama-3.1-8B-Instruct-Turbo",
          },
          {
            name: "messages",
            value: [
              {
                role: "system",
                content:
                  "You are a assistant called ExampleBot. You can ask me anything. Keep responses brief and legible. Your responses will be converted to audio, so please avoid using any special characters except '!' or '?'.",
              },
            ],
          },
        ],
      },
    ],
  },
  enableMic: true,
  enableCam: false,
  timeout: 15 * 1000,
  callbacks: {
    onConnected: () => {
      console.log("[CALLBACK] User connected");
    },
    onDisconnected: () => {
      console.log("[CALLBACK] User disconnected");
    },
    onTransportStateChanged: (state: string) => {
      console.log("[CALLBACK] State change:", state);
    },
    onBotConnected: () => {
      console.log("[CALLBACK] Bot connected");
    },
    onBotDisconnected: () => {
      console.log("[CALLBACK] Bot disconnected");
    },
    onBotReady: () => {
      console.log("[CALLBACK] Bot ready to chat!");
    },
  },
});

try {
  await rtviClient.connect();
} catch (e) {
  console.error(e.message);
}

// Events
rtviClient.on(RTVIEvent.TransportStateChanged, (state) => {
  console.log("[EVENT] Transport state change:", state);
});
rtviClient.on(RTVIEvent.BotReady, () => {
  console.log("[EVENT] Bot is ready");
});
rtviClient.on(RTVIEvent.Connected, () => {
  console.log("[EVENT] User connected");
});
rtviClient.on(RTVIEvent.Disconnected, () => {
  console.log("[EVENT] User disconnected");
});

Documentation

Pipecat Client Web implements a client instance that:

• Facilitates web requests to an endpoint you create.
• Dispatches single-turn actions to a HTTP bot service when disconnected.
• Provides methods that handle the connectivity state and realtime interaction with your bot service.
• Manages media transport (such as audio and video).
• Provides callbacks and events for handling bot messages and actions.
• Optionally configures your AI services and pipeline.

Docs and API reference can be found at https://docs.pipecat.ai/client/introduction.

Hack on the framework

Install a provider transport

yarn
yarn workspace @pipecat-ai/client-js build

Watch for file changes:

yarn workspace @pipecat-ai/client-js run dev

Contributing

We welcome contributions from the community! Whether you're fixing bugs, improving documentation, or adding new features, here's how you can help:

• Found a bug? Open an issue
• Have a feature idea? Start a discussion
• Want to contribute code? Check our CONTRIBUTING.md guide
• Documentation improvements? Docs PRs are always welcome

Before submitting a pull request, please check existing issues and PRs to avoid duplicates.

We aim to review all contributions promptly and provide constructive feedback to help get your changes merged.

Getting help

➡️ Join our Discord

➡️ Read the docs

➡️ Reach us on X