To determine if

function_tool

is called when a

conversation_item_added

event occurs, examine the event's

item

type: • If

event.item.type == "function_call"

, a function tool has been invoked. You can then check which tool (

event.item.name

) and its arguments. • If

event.item.type == "function_call_output"

, this represents the result of a function tool call. Each function tool call in a conversation triggers a

conversation_item_added

event with

type == "function_call"

(and subsequently

function_call_output

). Inspect the event payloads to detect and track tool invocation contextualized to the conversation. If you want a consolidated event representing function tool executions, listen for the

function_tools_executed

event, which summarizes all the function calls executed in a turn. For detailed examples of handlers, review the Python code snippets and event flow described above. Sources: livekit-plugins/livekit-plugins-google/livekit/plugins/google/llm.py | Events and error handling | LiveKit Docs