{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://raw.githubusercontent.com/api-evangelist/inworld-ai/main/json-schema/inworld-tts-synthesis-schema.json",
  "title": "InworldTtsSynthesizeRequest",
  "description": "Inworld TTS synthesis request body for POST /tts/v1/voice.",
  "type": "object",
  "required": ["text", "voiceId", "modelId", "audioConfig"],
  "properties": {
    "text": {
      "type": "string",
      "maxLength": 2000,
      "description": "Text to synthesize. Maximum 2,000 characters."
    },
    "voiceId": {
      "type": "string",
      "description": "Voice id (shipped voice name or custom voice id)."
    },
    "modelId": {
      "type": "string",
      "enum": ["inworld-tts-2", "inworld-tts-1.5-max", "inworld-tts-1.5-mini"]
    },
    "audioConfig": {
      "type": "object",
      "required": ["audioEncoding"],
      "properties": {
        "audioEncoding": {
          "type": "string",
          "enum": ["LINEAR16", "MP3", "OGG_OPUS", "ALAW", "MULAW", "FLAC", "PCM", "WAV"]
        },
        "sampleRateHertz": {
          "type": "integer",
          "minimum": 8000,
          "maximum": 48000,
          "default": 48000
        },
        "bitRate": {
          "type": "integer",
          "default": 128000
        },
        "speakingRate": {
          "type": "number",
          "minimum": 0.5,
          "maximum": 1.5,
          "default": 1.0
        }
      }
    },
    "language": {
      "type": "string",
      "description": "BCP-47 language tag."
    },
    "deliveryMode": {
      "type": "string",
      "enum": ["STABLE", "BALANCED", "CREATIVE"],
      "default": "BALANCED",
      "description": "TTS-2 only."
    },
    "temperature": {
      "type": "number",
      "minimum": 0,
      "maximum": 2,
      "default": 1.0
    },
    "timestampType": {
      "type": "string",
      "enum": ["WORD", "CHARACTER"]
    },
    "applyTextNormalization": {
      "type": "string",
      "enum": ["ON", "OFF"]
    }
  }
}