?

{
  "id": "?",
  "result": {
    "device_id": {
      "name": "sound_transmitter",
      "serial_number": 0
    },
    "api": {
      "firmware": [
        "SoundTransmitter"
      ],
      "verbosity": "NAMES",
      "functions": [
        "playTone",
        "playNoise",
        "stop",
        "isPlaying"
      ],
      "parameters": [
        "frequency",
        "volume"
      ],
      "properties": [
        "triggerToneFrequency",
        "triggerToneVolume",
        "triggerToneDuration"
      ],
      "callbacks": [
        "triggerTone"
      ]
    }
  }
}