Brand Copywriting Constraints

A lightweight constraint reference for brand copy. The LLM already knows how to write, this skill provides the specific limits, structures, and rules that turn generic copy into brand-precise copy.

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TAGLINE RULES

A tagline is the single most compressed expression of a brand. It appears on logos, business cards, social covers, and packaging.

Structure

• Length: 3-5 words maximum. No exceptions.
• No period at the end (taglines are not sentences).
• No brand name in the tagline (it appears alongside, not inside).

Approved Patterns

Pattern	Example	When to Use
Imperative verb	"Think Different"	Action-oriented brands
Statement	"Beauty Outside. Beast Inside."	Dual-nature positioning
Noun phrase	"The Ultimate Driving Machine"	Category ownership
Question	"What's in Your Wallet?"	Engagement / curiosity

Memorability Test

Before finalizing, check:

1. Can you say it in one breath without pausing?
2. Does it sound natural spoken aloud, not just on paper?
3. Does it work without context, would someone understand the vibe even without seeing the brand?

Avoid

• Generic superlatives ("The Best", "World-Class", "Premium")
• Puns that require explanation
• Industry jargon the target audience wouldn't use casually
• More than one clause or conjunction

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BRAND VOICE SPECTRUM

Define the brand voice along four axes. Each axis is a continuum, pick a position for the brand.

Axis	Left Pole	Right Pole	What It Governs
Formality	Formal	Casual	Vocabulary, contractions, sentence structure
Tone	Serious	Playful	Humor, metaphor, punctuation style
Complexity	Technical	Accessible	Jargon level, explanation depth
Energy	Reserved	Bold	Exclamation, caps, directness

Example Voice Profile