ux-writing

ux-writing is a skill for Claude Code from eugenelim/agent-ready-repo. It costs 212 tokens per session (2,781 once invoked), scanned A, original, Apache-2.0.

A method for writing the words people see in a product interface, including buttons, labels, errors, empty states, and other messages.

In plain words
What is it for?
Use it to define an interface writing style, create recurring screen-state messages, or review product copy.
Why use it?
It gives teams a consistent way to make interface text clear, useful, and free of blame before it ships.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the product-engineering plugin — 15 skills, 3 agents shipped together

Good fit Use it to define an interface writing style, create recurring screen-state messages, or review product copy.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/eugenelim/agent-ready-repo/ux-writing
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.

Any agent
npx skills add eugenelim/agent-ready-repo --skill ux-writing
Clone the repo
git clone --depth 1 https://github.com/eugenelim/agent-ready-repo

Made for: Claude Code.

Or install product-engineering, the plugin that ships this one along with the rest of its 15 skills, 3 agents.

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-writing

README.md
[![agentmods](https://agentmods.dev/badge/skills/eugenelim/agent-ready-repo/ux-writing/github.svg)](https://agentmods.dev/skills/eugenelim/agent-ready-repo/ux-writing)
Your own site
<a href="https://agentmods.dev/skills/eugenelim/agent-ready-repo/ux-writing"><img src="https://agentmods.dev/badge/skills/eugenelim/agent-ready-repo/ux-writing/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for ux-writing

Your own site · 80×15
<a href="https://agentmods.dev/skills/eugenelim/agent-ready-repo/ux-writing"><img src="https://agentmods.dev/badge/skills/eugenelim/agent-ready-repo/ux-writing.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 212 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,781 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 2 findings, up to high

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • high Prompt Injection · line 36
    Hidden instructions were detected in comments or invisible text. These could contain malicious directives. Manual review is recommended.
    Fix: Audit all comments and invisible characters. Remove any instructions that direct the agent to perform unauthorized actions. Use plain, reviewable content.
  • medium Rogue Agent · line 3
    Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.
    Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
How audits are shown
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 5.1 $0.00212 $0.02781
Opus 5 $0.00106 $0.01391
Sonnet 5 $0.00042 $0.00556
Haiku 4.5 $0.00021 $0.00278

Measured 8d ago against content hash 41d4d469a683, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

ux-writing 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 8d ago.

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.

packs/product-engineering/.apm/skills/ux-writing/SKILL.md · 114 lines

How it starts

The opening of the file, as written. The whole thing — 114 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Skill: ux-writing

Shape product intent into the words a user reads in the UI. The pack frames, de-risks, and decomposes intent into shippable features; this skill writes the copy those features render. The method is three moves: characterize the voice along a few axes, write each UI state from a blame-free, actionable formula, and run a content checklist before the copy ships. It is a method, not a word bank — framework-agnostic, and it never mandates a schema. The voice axes are in references/voice-axes.md, the per-state formulas in references/microcopy-formulas.md, the checklist in references/content-checklist.md.

When a per-screen state matrix from experience-design's user-flow is present, this skill writes copy per screen × state — one copy entry per screen/state cell in the matrix — and keys every string to the matrix row. The state set those cells enumerate is the experience-design pack's shared quality-floor (empty / loading / error / success / partial / disabled, plus permission/denied when gated); defer to it by-name for which states a screen owes copy, rather than inventing a state list. When the matrix is absent the skill is still fully useful: it writes copy for the states you name directly (detect-and-degrade; no screen flow required).

Design-seat pairing. This skill is the content layer of the design seat; the design methods and screen-flow artifacts live in the experience-design pack. See the experience-design pack's user-flow skill for the per-screen state matrix this skill can consume.

Scope boundary — surface type is the dividing line. For marketing/acquisition copy voice and positioned copy (hero headlines, above-fold narrative, taglines, announcement copy), use the experience-design pack's copy-direction skill; ux-writing covers product UI copy states (error, empty state, button labels, form labels). Onboarding tri-point: onboarding narrative arc and structure → content-design (experience-design pack); onboarding copy voice and register → copy-direction (experience-design pack); onboarding UI-state strings (loading, error, empty) → ux-writing (this skill).

Read the full file on GitHub · 114 lines

Files

What ships with it

7 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 8d ago First seen · 114 lines · 212 tokens per session scan A 41d4d469a683

Subscribe to this mod's changes

ux-writing is a skill published in the GitHub repository eugenelim/agent-ready-repo (21 stars, last pushed today), licensed Apache-2.0. It adds 212 tokens to every session and 2,781 once invoked, about $0.0011 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 2026-09-04.

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