LiveKit OpenAI Agents Adapter

This library provides an adapter to integrate agents built with the openai-agents library (specifically, its agents module) as LLM providers within the LiveKit Agents framework.

It allows you to plug in your openai-agents based orchestrators, leveraging their capabilities like conversation history management, tool usage, and handoffs, while still utilizing the real-time audio and agent lifecycle management features of LiveKit Agents.

Features

• Integrates agents built with the openai-agents library into LiveKit.
• Facilitates the use of openai-agents features (like handoffs, structured output if designed in your agent) within LiveKit.
• Configurable streaming: Choose between the original non-streaming approach (default) or real-time streaming responses.
• Includes a utility to extract the last user message from the chat context for the agent.

Installation

pip install livekit_openai_agents

(Note: Ensure this package name matches your published package on PyPI.)

Alternatively, if you have this project cloned:

pip install .

Dependencies

Based on pyproject.toml:

• livekit-agents[openai,elevenlabs,silero,turn-detector] == 1.0.17 (or your current version)
• livekit-plugins-noise-cancellation~=0.2
• openai-agents >= 0.0.14
• pyee >= 9.0.0

Please refer to your pyproject.toml for the most up-to-date list of dependencies.

Usage

1. Define Your openai-agents Agent

First, create your agent(s) using the agents library. For example:

# your_openai_agents.py
from agents import Agent
from pydantic import BaseModel

class MathResponse(BaseModel):
    explanation: str
    answer: float

math_tutor_agent = Agent(
    name="MathTutor",
    description="A specialized agent that helps with math problems and provides explanations.",
    instructions="You are a math tutor. Explain your reasoning step-by-step and provide the final answer.",
    output_type=MathResponse, # Example of structured output
    # You can add handoffs, tools, etc. as per openai-agents documentation
)

# You might have other agents or a more complex setup, e.g., a triage agent
# from agents import Runner
# result = await Runner.run(math_tutor_agent, "What is 2+2?")
# print(result.final_output) # Output: MathResponse(explanation='...', answer=4.0)

2. Use the Adapter in Your LiveKit Agent

Import OpenAIAgentAdapter from this library and your openai-agents agent. Then, initialize the adapter and use it in your LiveKit AgentSession.

# your_livekit_app.py
import asyncio
from dotenv import load_dotenv, find_dotenv

from livekit import agents
from livekit.agents import Agent as LiveKitAgent, AgentSession, RoomInputOptions # Renamed to avoid clash
from livekit.plugins import openai, silero # or your preferred STT/TTS/VAD

# Import the adapter and your openai-agent
from livekit_openai_agents.adapter import OpenAIAgentAdapter # Assuming 'livekit_openai_agents' is the package name
from your_openai_agents import math_tutor_agent # The agent defined in step 1

# Load .env for API keys if necessary
# load_dotenv(find_dotenv())

class MyLiveKitAssistant(LiveKitAgent): # Renamed to avoid clash with openai-agents' Agent
    def __init__(self) -> None:
        super().__init__(instructions="You are a helpful voice AI assistant that can call specialized tutors.")

async def entrypoint(ctx: agents.JobContext):
    await ctx.connect()

    # 1. Initialize your openai-agent (it's already defined, just use the instance)
    # math_tutor_agent is already an instance

    # 2. Initialize the adapter with your openai-agent instance
    # streaming=False (default): Uses the original non-streaming approach
    # streaming=True: Enables real-time streaming responses
    openai_agent_llm_adapter = OpenAIAgentAdapter(
        orchestrator=math_tutor_agent,
        streaming=False  # Default behavior - uses original non-streaming approach
    )

    # To enable streaming, you can set streaming=True:
    # openai_agent_llm_adapter = OpenAIAgentAdapter(
    #     orchestrator=math_tutor_agent,
    #     streaming=True  # Enable streaming for real-time responses
    # )

    # You can also change streaming mode dynamically:
    # openai_agent_llm_adapter.set_streaming(True)   # Enable streaming
    # openai_agent_llm_adapter.set_streaming(False)  # Disable streaming (back to original approach)
    
    # Check current streaming status:
    # is_streaming = openai_agent_llm_adapter.is_streaming_enabled()

    # 3. Set up the AgentSession
    session = AgentSession(
        stt=openai.STT(), # Replace with your STT
        llm=openai_agent_llm_adapter, # Use the adapter here
        tts=openai.TTS(), # Replace with your TTS
        vad=silero.VAD.load(),
    )

    await session.start(
        room=ctx.room,
        agent=MyLiveKitAssistant(),
        # ... other options
    )

    # Example: Generate an initial greeting
    await session.generate_reply(
        instructions="Greet the user and ask how you can help."
    )

    print("Agent is ready and listening.")

if __name__ == "__main__":
    # Load .env for API keys (e.g., OPENAI_API_KEY, LIVEKIT_URL, LIVEKIT_API_KEY)
    dotenv_path = find_dotenv()
    if dotenv_path:
        print(f"Loading .env file from: {dotenv_path}")
        load_dotenv(dotenv_path)
    else:
        print("No .env file found. Ensure API keys and LiveKit connection info are set as environment variables.")
    
    agents.cli.run_app(agents.WorkerOptions(entrypoint_fnc=entrypoint))

3. Streaming Configuration

The OpenAIAgentAdapter supports both the original non-streaming approach and an optional streaming mode:

Non-Streaming Mode (Default)

# Use original non-streaming approach (default behavior)
adapter = OpenAIAgentAdapter(orchestrator=your_agent, streaming=False)

• Uses the original implementation approach
• Responses are delivered as complete messages
• Maintains backward compatibility
• Uses Runner.run() internally

Streaming Mode (Optional)

# Enable streaming responses
adapter = OpenAIAgentAdapter(orchestrator=your_agent, streaming=True)

• Responses are delivered in real-time as they are generated
• Users see text appearing progressively
• Better user experience for longer responses
• Uses Runner.run_streamed() internally

Dynamic Streaming Control

adapter = OpenAIAgentAdapter(orchestrator=your_agent)  # Default: streaming=False

# Change streaming mode at runtime
adapter.set_streaming(True)   # Enable streaming
adapter.set_streaming(False)  # Disable streaming (back to original approach)

# Check current streaming status
if adapter.is_streaming_enabled():
    print("Streaming is enabled")
else:
    print("Using original non-streaming approach")

See the examples/ directory (e.g., examples/tutors/adapter_example.py) for a more detailed, runnable example.

API Reference

OpenAIAgentAdapter

Constructor Parameters

• orchestrator: The OpenAI Agents Agent instance to adapt
• guardrail_handler: Optional function to handle guardrail trips
• context: Optional context to provide to the agent
• streaming: Whether to enable streaming responses (default: False)

Methods

• set_streaming(streaming: bool): Sets the streaming mode for future chat calls
• is_streaming_enabled() -> bool: Returns whether streaming is currently enabled
• chat(...): Creates a chat stream (uses streaming setting)
• generate(...): Generates a response string (always non-streaming)

Development

To set up for development:

git clone https://github.com/anilaltuner/livekit-openai-agents.git
cd livekit-openai-agents
pip install -e .

License

This project is licensed under the MIT License - see the LICENSE file for details.