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bot not speaking despite await self.session.genera...
# ask-ai
r
bot not speaking despite await self.session.generate_reply(instructions="As Aristo, Greet the user warmly and offer your assistance.")
t
Thanks for reaching out, Gaurav. I'm an AI assistant and I'm here to help. Give me a moment while I research this topic.
Thanks — I’m responding about your bot not speaking when you call 
await self.session.generate_reply(instructions="...")
. Quick checklist to confirm (please tell me which apply): • Is the agent properly initialized, connected to the room, and the session started before you call 
generate_reply
? • Are you calling 
generate_reply
from an executing method/hook (for example 
on_enter
) in a custom 
Agent
subclass so the code actually runs? • Is audio output enabled (e.g., 
audio_output=True
in 
RoomOptions
) and the frontend subscribed to audio tracks? • Are TTS/audio output plugins configured and available on the agent host? • Do you see any errors or warnings in logs when the session starts or when 
generate_reply
runs? • Are you using a realtime model? (Realtime models may return text-only or skip scripted speech sometimes, and may be affected by conversation history.) Quick tests you can run and report results for: 1. Call 
await self.session.say("Hello")
in the same place you call 
generate_reply
— does that produce audio? 2. Add logging immediately before/after 
generate_reply
to confirm the call executes and whether it returns successfully. 3. Check the frontend to confirm an audio track is present when the agent should be speaking. If you share: • the snippet around where you call 
generate_reply
(which hook/method), • whether audio_output is enabled, • your model type (realtime vs other), and • any log errors, I’ll suggest targeted next steps. Sources: Realtime model plugins | LiveKit Docs | Pipeline nodes and hooks | LiveKit docs | Agents and handoffs | LiveKit docs | Agent speech and audio | LiveKit docs
r
Copy code
async def on_enter(self):
    """Called when the agent enters the conversation"""
    <http://logger.info|logger.info>("🎯 on_enter() called - Agent is entering the conversation")
    try:
        <http://logger.info|logger.info>("💬 Generating greeting...")
        await self.session.generate_reply(instructions="As Aristo, Greet the user warmly and offer your assistance.")
        <http://logger.info|logger.info>("✅ Greeting generated successfully")
    except Exception as e:
        logger.error(f"❌ Error in on_enter: {e}", exc_info=True)
t
Thanks — you're calling 
generate_reply
from 
on_enter
, which is correct. To narrow down why there's no audible speech, please provide the following so I can diagnose: 1. Recent logs around session start and the 
on_enter
call (include the INFO/ERROR lines you added and any stack traces). 2. Your 
RoomOptions
or how you start the session — specifically whether 
audio_output=True
is set. 3. The agent/session initialization code (how you create the 
Agent
, 
AgentSession
, and join the room). 4. Which model you’re using (realtime vs non-realtime) and whether TTS/audio plugins are configured on the agent host. 5. The frontend state when the bot should speak: is an audio track visible/subscribed in the client? Any client-side console errors? While you gather those, try these quick checks and report results: • Replace 
generate_reply
with 
await self.session.say("Hello")
in 
on_enter
. Does that produce audio? • Add logs immediately before and after 
generate_reply
to confirm it completes and note its return (you already have these—please paste them). • Confirm there are no exceptions during session start and that the frontend subscribes to audio tracks. Send the requested logs/config and test results and I’ll give targeted next steps.
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