Error Handling

{
  "error": {
    "code": "ERROR_CODE",
    "message": "Human-readable error message",
    "details": {
      // Additional context (structure varies by error type)
    },
    "doc_url": "https://docs.precital.com/errors#ERROR_CODE"
  }
}

{
  "error": {
    "code": "VALIDATION_ERROR",
    "message": "Either audio_url or audio_id must be provided",
    "details": {
      "field": "audio_url"
    },
    "doc_url": "https://docs.precital.com/errors#VALIDATION_ERROR"
  }
}