ux-copy

ux-copy is a skill for Claude Code, Codex from fusengine/agents. It costs 31 tokens per session (2,291 once invoked), scanned A, original, MIT.

A guide for writing and reviewing text that appears in a product, such as headings, buttons, help text, errors, and empty states. It checks the text against defined style rules and removes common filler and artificial-sounding patterns.

In plain words
What is it for?
Use it during design and writing work to review visible interface text, including button labels, error messages, captions, and alternative text for images.
Why use it?
It helps keep product copy consistent and avoids unclear, exaggerated, or awkward wording. It also catches error messages and placeholders that can make an interface feel unfinished.

Skill for Claude CodeCodex

Part of the fuse-design plugin — 9 skills, 5 commands, 1 agent shipped together

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/fusengine/agents/ux-copy
Any agent
npx skills add fusengine/agents --skill ux-copy
Clone the repo
git clone --depth 1 https://github.com/fusengine/agents

Made for: Claude Code, Codex.

Or install fuse-design, the plugin that ships this one along with the rest of its 9 skills, 5 commands, 1 agent.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for ux-copy

README.md
[![agentmods](https://agentmods.dev/badge/skills/fusengine/agents/ux-copy.svg)](https://agentmods.dev/skills/fusengine/agents/ux-copy)
Your own site
<a href="https://agentmods.dev/skills/fusengine/agents/ux-copy"><img src="https://agentmods.dev/badge/skills/fusengine/agents/ux-copy.svg" alt="Measured on agentmods" height="20"></a>
Per session 31 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,291 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00031 $0.02291
Opus 5 $0.00015 $0.01145
Sonnet 5 $0.00006 $0.00458
Haiku 4.5 $0.00003 $0.00229

Measured yesterday against content hash 26471a40edc6, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

ux-copy scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/design-expert/skills/ux-copy/SKILL.md · 141 lines

How it starts

The opening of the file, as written. The whole thing — 141 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Runs 10 mechanical ban-lists: filler verbs/hype adjectives, slop placeholder names, fake-precise numbers, unjustified Title Case headlines, humor in error copy ("Oops!"), the AI production-tell catalogue, em-dash-as-crutch, "Not X. Y." manufactured contrast, the "theater" keyword, and all-caps body copy.

Enforces one copy register per page (brand traces to the POV, product stays domain-specific). Judgment calls that aren't mechanically resolvable are quoted, located, and routed to design-review's challenger gate — never self-scored.

UX Copy — Self-Audit + Ban-Lists, One Register Per Page

When

Any time visible copy is written or edited — headlines, subheads, eyebrows, button labels, body, captions, alt text, error messages, empty states — inside generate/ critique/audit/polish (design-method) or as a standalone copy pass. Register is resolved once, at Gate 0 (design-method/SKILL.md), before this runs — never re-guessed here.

Input

  • Register (brand/product) from Gate 0.
  • Sector, if resolved, for references/voice-tone-sectors.md.
  • Every visible string in the deliverable.

One register per page — hard rule

A single copy register per page (references/copy-self-audit.md §7): don't mix technical mono, editorial prose, and marketing punch on one surface unless the brand voice explicitly calls for it. Register direction is conditional exactly like layout and motion (design-method/references/register/copy.md §3): brand copy must trace to the one-sentence POV — run the Competitor Lift Test on the paragraph itself, could it run unchanged on a competitor's site; product copy stays precise and domain-specific, naming the real object and the real action, never marketing voice bleeding into the app shell.

Read the full file on GitHub · 141 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. yesterday First seen · 141 lines · 31 tokens per session scan A 26471a40edc6

Subscribe to this mod's changes

ux-copy is a skill published in the GitHub repository fusengine/agents (25 stars, last pushed 1mo ago), licensed MIT. It adds 31 tokens to every session and 2,291 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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