- In `stt-tts` mode, STT uses `tools.media.audio`; `voice.model` does not affect transcription.

- In realtime modes, `voice.realtime.provider`, `voice.realtime.model`, and `voice.realtime.voice` configure the realtime audio session. For OpenAI Realtime 2 plus the Codex brain, use `voice.realtime.model: "gpt-realtime-2"` and `voice.model: "openai-codex/gpt-5.5"`.

- Realtime voice modes include small `IDENTITY.md`, `USER.md`, and `SOUL.md` profile files in the realtime provider instructions by default so fast direct turns keep the same identity, user grounding, and persona as the routed OpenClaw agent. Set `voice.realtime.bootstrapContextFiles` to a subset to customize this, or `[]` to disable it. The supported realtime bootstrap files are limited to those profile files; `AGENTS.md` stays in the normal agent context. The injected profile context does not replace `openclaw_agent_consult` for workspace work, current facts, memory lookup, or tool-backed actions.

- In OpenAI `agent-proxy` realtime mode, set `voice.realtime.requireWakeName: true` to keep Discord realtime voice silent until a transcript contains a wake name. If `voice.realtime.wakeNames` is unset, OpenClaw uses the routed agent `name`, falling back to the agent id. Wake-name gating disables realtime provider auto-response and routes accepted turns through the OpenClaw agent consult path.

- In OpenAI `agent-proxy` realtime mode, set `voice.realtime.requireWakeName: true` to keep Discord realtime voice silent until a transcript contains a wake name. If `voice.realtime.wakeNames` is unset, OpenClaw uses the routed agent `name` plus `OpenClaw`, falling back to the agent id plus `OpenClaw`. Wake-name gating disables realtime provider auto-response and routes accepted turns through the OpenClaw agent consult path.

- The OpenAI realtime provider accepts current Realtime 2 event names and legacy Codex-compatible aliases for output audio and transcript events, so compatible provider snapshots can drift without dropping assistant audio.

- `voice.realtime.bargeIn` controls whether Discord speaker-start events interrupt active realtime playback. If unset, it follows the realtime provider's input-audio interruption setting.

- `voice.realtime.minBargeInAudioEndMs` controls the minimum assistant playback duration before an OpenAI realtime barge-in truncates audio. Default: `250`. Set `0` for immediate interruption in low-echo rooms, or raise it for echo-heavy speaker setups.