{
  "operation": "Create or Update Custom Brand Tone Preset",
  "method": "POST",
  "path": "/api/ai/captions/tone-presets",
  "request": {
    "name": "string",
    "locale": "string",
    "voiceRules": [
      "string"
    ],
    "blockedTerms": [
      "string"
    ]
  },
  "response": {
    "message": "Tone preset saved"
  }
}