LiveAvatar Plugin for Vision Agents

Real-time interactive avatar via LiveAvatar (by HeyGen). Uses LITE mode with the custom-agent integration path.

Features

• Real-time avatar video synchronized with TTS audio
• Works with any TTS provider (Cartesia, ElevenLabs, Deepgram, etc.)
• Supports both standard and Realtime LLMs

Installation

uv add "vision-agents[liveavatar]"
# or directly
uv add vision-agents-plugins-liveavatar

Quick Start

import asyncio
from uuid import uuid4
from dotenv import load_dotenv

from vision_agents.core import Agent, User
from vision_agents.plugins import deepgram, gemini, getstream, liveavatar

load_dotenv()


async def start_avatar_agent():
    agent = Agent(
        edge=getstream.Edge(),
        agent_user=User(name="AI Assistant with Avatar", id="agent"),
        instructions="You're a friendly AI assistant.",

        llm=gemini.LLM(),
        tts=deepgram.TTS(),
        stt=deepgram.STT(),

        avatar=liveavatar.Avatar(),
    )

    call = await agent.create_call("default", str(uuid4()))

    async with agent.join(call):
        await agent.simple_response("Hello! I'm your AI assistant with an avatar.")
        await agent.finish()


if __name__ == "__main__":
    asyncio.run(start_avatar_agent())

Configuration

Environment Variables

LIVEAVATAR_API_KEY=your_liveavatar_api_key
LIVEAVATAR_AVATAR_ID=your_avatar_uuid

Avatar Options

liveavatar.Avatar(
    avatar_id="...",                # LiveAvatar avatar UUID (or set LIVEAVATAR_AVATAR_ID)
    api_key="...",                  # (or set LIVEAVATAR_API_KEY)
    base_url=None,                  # Override https://api.liveavatar.com if needed
    is_sandbox=True,                # Sandbox sessions don't burn credits but are duration-capped. Set False in production.
    max_session_duration=None,      # Seconds; None means LiveAvatar's default
    video_quality="high",           # "low" | "medium" | "high" | "very_high"
    video_encoding="H264",          # "H264" | "VP8"
    width=1920,
    height=1080,
)

Requirements

• Python 3.10+
• LiveAvatar API key — see docs.liveavatar.com
• GetStream account for the user-facing call
• TTS provider or Realtime LLM

License

MIT

Links

• Documentation
• GitHub
• LiveAvatar Docs
• LITE-mode integration paths