What problem does it solve? Writing clear, consistent interface copy is hard — error messages confuse users, CTAs are vague, and empty states leave people stuck. This Skill provides structured patterns and principles for producing UX copy that is clear, concise, and actionable. ## Core Features & Use Cases - Copy Patterns: Ready-made structures for CTAs, error messages, empty states, confirmation dialogs, tooltips, loading states, and onboarding text. - Copy Review: Evaluate existing microcopy against five principles — clear, concise, consistent, useful, and human. - Structured Output: Delivers recommended copy, tone-labeled alternatives, rationale, and localization notes. - Use Case: When a payment fails in your checkout flow, ask for an error message and receive copy structured as what happened, why, and how to fix it, plus alternative tones. ## Quick Start Ask the assistant to write an error message for a failed payment in the checkout flow, including the user's emotional state and any character limits.