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CAFECITO.

Free tool

Brand Voice JSON Builder

Your brand guidelines, translated into a format AI can actually follow. Fill in the four sections and the file writes itself. Copy it into any AI tool, or download it for your team.

Not sure what to put in the charter box? Start with the Voice Charter template.

1. The basics

2. Personality

ReservedBold
ProfessionalCasual
DirectWarm
PolishedPlayful
SophisticatedSimple

3. Language rules

4. Channel shifts

Same friend, different rooms. How does the tone shift per channel?

Your Brand Voice JSON

{
  "brand_voice": {
    "name": "Your brand",
    "voice_charter": "Write your 25-word charter here.",
    "charter_word_count": 0,
    "audience": "Who you write for",
    "personality": {
      "bold_vs_reserved": {
        "value": 50,
        "lean": "balanced reserved/bold"
      },
      "casual_vs_professional": {
        "value": 50,
        "lean": "balanced professional/casual"
      },
      "warm_vs_direct": {
        "value": 50,
        "lean": "balanced direct/warm"
      },
      "playful_vs_polished": {
        "value": 50,
        "lean": "balanced polished/playful"
      },
      "simple_vs_sophisticated": {
        "value": 50,
        "lean": "balanced sophisticated/simple"
      }
    },
    "language": {
      "banned_words": [
        "synergy",
        "leverage",
        "disrupt",
        "paradigm-shifting",
        "robust solution"
      ],
      "approved_phrases": [],
      "emoji_policy": "none"
    },
    "cta_style": "Direct ask, one per piece",
    "channels": {
      "linkedin": {
        "tone_shift": "default"
      },
      "instagram": {
        "tone_shift": "default"
      },
      "x": {
        "tone_shift": "default"
      },
      "email": {
        "tone_shift": "default"
      },
      "blog": {
        "tone_shift": "default"
      },
      "support": {
        "tone_shift": "default"
      }
    },
    "instructions": "Write as this brand. Match the personality leans. Never use banned words. Prefer approved phrases where natural. Follow the per-channel tone shift."
  }
}

Paste this at the start of a ChatGPT or Claude conversation with: “Use this voice file for everything you write in this chat.” Nothing you type here leaves your browser.