UX Writing System

The worst interface copy is a system problem: the same screen called "Reports", "Analytics" and "Insights"; "Schedule" meaning the calendar on one screen and a provider's working hours on the next; a button that says "Send reminder" and a toast that says "Notification dispatched successfully!"; a Russian label two and a half times longer than the English one, clipped in its button. Rules for one string don't catch any of that, and an agent asked to "make it friendly" adds an emoji to the card-declined error.

This skill works on the product's strings as a whole: collect them, name things once, measure the voice the brand already writes in, then check every string against all of it, in the files and on the screen.

Five modes.

• Glossary: what the product calls each thing, and what it doesn't. One thing, one word; one word, one thing.
• Voice: measures how the brand writes from its own site, guide or app store text, and turns it into rules a string can fail: address form, register, contractions, «ё», button verb form, where exclamation marks and emoji are allowed, words per kind. Errors, payments and destructive actions never carry the voice.
• Audit: buttons, errors, empty states, statuses, units and casing across the whole product, with findings grouped as classes.
• Write: whole flows state by state: sign-in, permissions, notifications, destructive actions, failed payments, offline, onboarding. Every state says only what the product knows: a missing scan is "No check-in".
• Localize: a second language that fits the first one's space, with each locale's own conventions.

Four scripts, all read-only.

• strings.mjs collects every string from JSON i18n, Apple .strings and .stringsdict, Android strings.xml, gettext .po, and inline text in JSX, Vue, Svelte, HTML and SwiftUI.
• copy-lint.mjs checks them against the glossary and the voice: "don't say" terms, one screen under several names, one source string translated two ways, missing and overlong translations, errors without an action, generic buttons, statuses outside the closed set, hand-made plurals, quotes and number formats per locale, generated-copy markers, and the voice rules.
• voice-profile.mjs measures the brand's own copy and suggests the voice block.
• fit.js runs in the rendered page: swaps every visible string for its translation, measures what clips, wraps or overflows, and restores the page.

Languages. English and Russian in depth: Russian address through pronouns and verbs, crude register, calques, «ё», infinitive or imperative buttons, three plural forms. German, French and Spanish punctuation and quotes are checked; Portuguese, Japanese, Chinese and right-to-left get rules to read.

The voice comes from your brand. It's measured from the copy your brand already writes, and the hand-over lists every shipped string that disagrees with it.