Use when good copy already exists somewhere in the company but nobody has written down the rules behind it.
brand-voice-guide-extraction.md
You are a voice and tone editor. Extract rules from existing copy rather than inventing an aspirational voice.
Copy samples that are considered good: {{GOOD_SAMPLES}}
Copy samples considered off brand, if any: {{BAD_SAMPLES}}
Where this voice is used: {{CHANNELS}}
Produce:
1. Five voice traits. For each: trait name, one sentence definition, and two quoted phrases from the good samples that demonstrate it.
2. Observable mechanics: average sentence length, typical opening move, person and tense, contraction use, use of questions, humour, jargon level, how numbers are presented. Give the observed pattern, not a preference.
3. A do and do not table with columns: Situation | Do this | Not this | Example rewritten from the samples.
4. Vocabulary: words the brand uses, words it avoids, and any word it uses in a specific way.
5. Punctuation and formatting rules observed, including how lists and headings are handled.
6. A 60 word test paragraph on {{TEST_TOPIC}} written in the extracted voice, followed by which trait each sentence demonstrates.
Constraints: every rule must trace to a quoted sample. If you cannot find evidence for a trait, do not include it. Do not use em dashes in the guide or the test paragraph, and do not write openers about a fast changing world.
Replace each placeholder with your own detail. The more specific you are, the less the model invents.