You can programmatically enable the microphone when connecting a participant using the Web SDK, but the user will still need to grant permission through the browser's permission prompt. This is a security feature enforced by browsers to protect user privacy. To enable the microphone, you can use the following method:

// Enables the microphone and publishes it to a new audio track
room.localParticipant.setMicrophoneEnabled(true);

When you call

setMicrophoneEnabled(true)

, it will immediately trigger the microphone permission prompt and start publishing audio once the user grants permission. Additionally, you can enable the microphone with options like pre-connect buffering:

room.localParticipant.setMicrophoneEnabled(true, undefined, {
  preConnectBuffer: appConfig.isPreConnectBufferEnabled,
});

While you can call this method immediately after connecting to the room or even before connecting, the browser's permission prompt cannot be bypassed. Sources: Publishing tracks | LiveKit Docs | web/providers/GameProvider.tsx | Voice Assistants | livekit/livekit_composite | DeepWiki | components/playground.tsx | complex-agents/nova-sonic/nova-sonic-form-agent/components/app.tsx