Style Guide
1 min read · Reviewed 17 Oct 2026
In short
Written rules for how your organisation writes.
In plain English
The decisions you have made about spelling, tone, formatting and terminology, written down so everyone applies them the same way.
A real example
British spelling, no exclamation marks, always "members" not "users", sentence case in headings. Small rules, consistently applied.
Why it matters
A style guide is the most directly reusable thing you can give an AI. Paste it into a system prompt and consistency stops depending on whoever is writing that day.