{ "server": { "host": "0.0.0.0", "port": 8000, "cors_origins": ["*"] }, "audio": { "sample_rate_hz": 16000, "channels": 1, "frame_ms": 20 }, "session": { "inactivity_timeout_sec": 60 }, "agent": { "system_prompt": "You are a concise voice assistant.", "greeting": "Please say hello in one short sentence.", "greeting_mode": "generated" }, "services": { "stt": { "provider": "openai", "api_key": "", "base_url": null, "model": "gpt-4o-mini-transcribe", "language": "en" }, "llm": { "provider": "openai", "api_key": "", "base_url": null, "model": "gpt-4o-mini", "temperature": 0.7 }, "tts": { "provider": "openai", "api_key": "", "base_url": null, "model": "gpt-4o-mini-tts", "voice": "alloy" } } }