What problem does it solve? Inconsistent, vague, or confusing interface copy erodes user trust and makes products harder to use. This Skill applies twelve concrete UX writing principles to write or review microcopy so buttons, errors, links, and empty states are clear, consistent, and actionable. ## Core Features & Use Cases - Copy Review with Findings Tables: Audits existing interface text and reports findings grouped by principle with severity, file location, before/after quotes, and rationale. - Twelve Writing Principles: Covers verb-first buttons, error messages that say how to fix the problem, empty states with a next action, consistent capitalization, toggle labels describing the ON state, and placeholders as format examples. - Use Case: A developer finishing a settings page asks for a copy review; the Skill flags a destructive dialog using "OK" instead of "Delete project", a toggle labeled "Don't send read receipts", and an empty state that only says "No results.", each with a concrete replacement. ## Quick Start Review the user-facing copy in my settings and checkout components and suggest improvements for buttons, errors, and empty states.