Is it possible top use agent update tools and pass the agent LiveKit Community #ask-ai

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Is it possible top use agent.update_tools and pass...

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bright-plumber-93445

05/08/2025, 1:22 PM

Is it possible top use agent.update_tools and pass the agent as a parameter to the tool so it can use it?

tall-airline-16756

05/08/2025, 1:22 PM

Thanks for reaching out, Håvard. I'm an AI assistant and I'm here to help. Give me a moment while I research this topic.

tall-airline-16756

05/08/2025, 1:22 PM

Based on the available information, it is not explicitly mentioned that you can pass the agent itself as a parameter to a tool when using

agent.update_tools()

. However, tools can access the current session, agent, and state through a special

context

argument of type

RunContext

, which provides access to the current session, function call, speech handle, and userdata. If you need further clarification or have a specific use case in mind, feel free to share more details! Sources: Tool definition and use | LiveKit Docs

bright-plumber-93445

05/08/2025, 1:28 PM

How do you access the agent?

tall-airline-16756

05/08/2025, 1:29 PM

You can access the agent in LiveKit through the

JobContext

class using the

agent

accessor property. This property returns the agent's participant if connected to the room, or

undefined

if not connected. Here is an example:

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// Accessing the agent property from a JobContext instance
const agentParticipant = jobContext.agent;

Sources: JobContext | LiveKit Agents

bright-plumber-93445

05/08/2025, 1:36 PM

Is it possible to change variables that are set in the current_agent through RunContext?

tall-airline-16756

05/08/2025, 1:37 PM

Yes, it is possible to change variables in the current agent through

RunContext

by accessing the

userdata

property. Here is an example:

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@function_tool()
async def update_name(
    name: Annotated[str, Field(description="The customer's name")],
    context: RunContext_T,
) -> str:
    """Called when the user provides their name.
    Confirm the spelling with the user before calling the function."""
    userdata = context.userdata
    userdata.customer_name = name
    return f"The name is updated to {name}"

In this example, the

userdata

is accessed through

context.userdata

, and the desired property (e.g.,

customer_name

) is modified directly. Sources: Tree View: | dse-workbench

bright-plumber-93445

05/08/2025, 1:41 PM

I get this error 'ValueError: VoiceAgent userdata is not set'. I am using Livekit 1.0

tall-airline-16756

05/08/2025, 1:41 PM

The error

ValueError: VoiceAgent userdata is not set

occurs when you try to access the

userdata

property of a

VoiceAgent

instance without setting it first. To resolve this, you need to ensure that the

userdata

is set before accessing it. You can do this in one of two ways: 1. Pass the

userdata

parameter when initializing the `VoiceAgent`:

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agent = VoiceAgent(userdata=your_data)

1. Set it after initialization using the setter:

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agent = VoiceAgent()
agent.userdata = your_data

Ensure that

your_data

is properly defined before assigning it to avoid this error. Sources: livekit.agents API documentation

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