Thanks — I’m responding to your question about how to find a remote participant with a specific attribute in a Python agent. You can access all remote participants from

ctx.room.remote_participants

(a dict mapping identity → RemoteParticipant). Each

RemoteParticipant

has an

attributes

dict you can inspect. Two common patterns: 1) Iterate and check • Quick and explicit: loop through participants and check the attribute. Example:

for participant in ctx.room.remote_participants.values():
    if participant.attributes.get("your_attribute_key") == "expected_value":
        # found the participant
        found = participant
        break
else:
    found = None

2) Use a generator for concise lookup • Returns the first match or

None

if not found. Example:

found = next(
    (p for p in ctx.room.remote_participants.values()
     if p.attributes.get("your_attribute_key") == "expected_value"),
    None
)

Reacting to attribute changes • If attributes can change at runtime, listen for

participant_attributes_changed

to respond when the value updates:

@ctx.room.on("participant_attributes_changed")
def on_participant_attributes_changed(changed_attrs: dict, participant):
    if "your_attribute_key" in changed_attrs:
        new_value = participant.attributes.get("your_attribute_key")
        # handle updated value

If you’d like, tell me: • The exact attribute key and value you’re searching for, and • Whether you want the first match or all matches I can then provide a ready-to-drop-in snippet (for first match or a list of all matches) that fits your agent code style. Sources: Job lifecycle | LiveKit Documentation | SIP Lifecycle Management Agent | LiveKit Documentation | Build a salary negotiation coach with a LemonSlice avatar | LiveKit, with interactive elements