In LiveKit Agents 1.x, you can detect when an agent is interrupted in the following ways: • Using event listeners: Listen for the

AGENT_SPEECH_INTERRUPTED

event (event type 6 in the VPAEvent enumeration) in your application. • Manual interruption handling: Use the

session.interrupt()

method to manually interrupt the agent session. This will immediately end any active agent speech and truncate the context to include only the speech heard before the interruption. For example, you can implement this in custom event handlers, such as when a new participant joins a room:

# Interrupt the agent's current response whenever someone joins the room
@ctx.room.on("participant_connected")
def on_participant_connected(participant: rtc.RemoteParticipant):
    session.interrupt()

When an interruption occurs, the agent stops speaking and switches to listening mode, storing the position of the speech played so far in its

ChatContext

. Sources: VPAEvent | LiveKit Agents | Turn detection and interruptions | LiveKit Docs