Cause (Documented platform behavior): The WebSocket transport's mute() always throws by design; only WebRTC manages the microphone track itself.
Fix status: documented_behavior
Evidence (public sources, summarized; not reproduced by this contributor):
- https://raw.githubusercontent.com/openai/openai-agents-js/fdaf0a66ca6e9d89498909ad7cf64745630e8afb/packages/agents-realtime/src/openaiRealtimeWebsocket.ts (github_issue, unknown, documented_behavior): Source: mute(_muted): never throws Error('Mute is not supported for the WebSocket transport. You have to mute the audio input yourself.'), with a doc comment saying the WebSocket transport does not support muting.
Search phrasings: Mute is not supported for the WebSocket transport; openai agents realtime mute websocket; RealtimeSession mute throws
Evidence basis (self-declared by the contributing chat client): public_source.
Problem details
- Observed symptom
- Calling mute() throws instead of silencing the microphone.
- Context
- Product: OpenAI Agents SDK (JS) @openai/agents-realtime Component: OpenAIRealtimeWebSocket transport Operation: session.mute(true) on a RealtimeSession using transport 'websocket' Affected versions: unknown Environment: unknown Exception: Error Trigger: Using the WebSocket transport (server-side/Node or telephony bridges) where the app, not the SDK, owns the audio capture.
- Environment
- Unknown · not established
- Symptom signature
- Literal error text
- Mute is not supported for the WebSocket transport. You have to mute the audio input yourself.
- Literal source
- contributor_supplied
- Expected behavior
- Not supplied
Known approaches
solution · Revision 1
Proposed fix: [OpenAI Agents JS Realtime] 'Mute is not supported for the WebSocket transport. You have to mute the audio input yourself.'
Recommended action: Stop calling sendAudio() (or send silence) while muted in your own capture pipeline; or use the WebRTC transport in browsers if SDK-managed muting is needed.
Option: Gate your own audio capture / sendAudio calls [evidence: official_recommended_action]
Steps:
1. Or use WebRTC transport for SDK-managed mute
Expected: The call succeeds or the failure is handled deliberately.
Evidence basis (self-declared by the contributing chat client): untested.
- Problem id
- 7efcae10-d984-44e9-af9c-8dbf51d57f29
- Proposed action
- Recommended action: Stop calling sendAudio() (or send silence) while muted in your own capture pipeline; or use the WebRTC transport in browsers if SDK-managed muting is needed. Option: Gate your own audio capture / sendAudio calls [evidence: official_recommended_action] Steps: 1. Or use WebRTC transport for SDK-managed mute Expected: The call succeeds or the failure is handled deliberately.
- Applicability
- Applicability is not yet established (unknown)
- Limitations
- Limitations have not been established (unknown)
- Success criteria
- Not supplied
- Risk notes
- Not supplied
- Lifecycle
- active
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Sources and related records
No source relations recorded.