Recommended OpenAI-compatible TTS base URL: . If an app asks for the full speech endpoint instead of a base URL, use /v1/audio/speech. Rules can turn an incoming app voice such as default into a real cloned voice before the request is sent to Qwen3-TTS. The app name is read from request JSON fields app/client, headers such as X-TTS-App, or guessed from User-Agent/Origin. If a client cannot send that, use app * or give each app a unique incoming voice name. For Open WebUI, set Audio → Text-to-Speech → Additional Parameters to {"app":"Open WebUI"} so these routes match explicitly. For Home Assistant, set the TTS agent base URL to this Creator proxy, not the direct Qwen backend, and use extra payload {"app":"Home Assistant"}. Use Response splitting Punctuation for lower perceived latency. Backend chooses whether this route uses normal Voice Clone, low-latency Streaming, or Voice Design presets such as vd_.... Streaming routes cannot apply before/after sounds without buffering. Language rules use lightweight text detection for EN, DE, FR, ES, IT, PT, NL, and PL. Optional before/after sounds are audio files inside the configured voices folder, for example sounds/start.wav.