Hey there! If you want to track the start and end times of each conversation item in LiveKit, you can use the

EventMetric

structure from LiveKit’s metrics system. It’s got these handy

start_timestamp_ms

and

end_timestamp_ms

fields that log the times in milliseconds. Here’s a simple way to do it: 1. When a conversation item kicks off, grab the current time in milliseconds and save it as

start_timestamp_ms

. 2. Once the conversation item wraps up, record the current time again as

end_timestamp_ms

. 3. Then, create an

EventMetric

object with those timestamps and add it to your metrics batch. Check out this example code snippet:

from livekit.agents import metrics
import time

# When a conversation item starts
start_time = int(time.time() * 1000)  # Current time in milliseconds

# When the conversation item ends
end_time = int(time.time() * 1000)

# Create the EventMetric for this conversation item
conversation_metric = metrics.EventMetric(
    label=your_label,
    participant_identity=your_participant_id,
    track_sid=your_track_id,
    start_timestamp_ms=start_time,
    end_timestamp_ms=end_time,
    metadata="conversation_item"
)

# Add it to your metrics batch
metrics_batch.events.append(conversation_metric)

If you want to dive deeper, the LiveKit Metrics Documentation has all the details you might need. Feel free to reach out if you have any questions!