copywriting

copywriting is a skill for Claude Code from ssheleg/super-ux. It costs 197 tokens per session (2,238 once invoked), scanned A, original, MIT.

A writing skill for creating or editing text that people read in a product or its communications.

In plain words
What is it for?
It covers interface text, buttons, errors, empty states, landing and pricing pages, blog posts, changelogs, social posts, app listings, and lifecycle email.
Why use it?
It provides rules for matching an existing brand voice and terminology instead of inventing wording separately for each screen or channel.

Skill for Claude Code

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

Part of the super-ux plugin — 7 skills, 15 commands shipped together

Good fit It covers interface text, buttons, errors, empty states, landing and pricing pages, blog posts, changelogs, social posts, app listings, and lifecycle email.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/ssheleg/super-ux/copywriting
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 ssheleg/super-ux --skill copywriting
Clone the repo
git clone --depth 1 https://github.com/ssheleg/super-ux

Made for: Claude Code.

Or install super-ux, the plugin that ships this one along with the rest of its 7 skills, 15 commands.

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 copywriting

README.md
[![agentmods](https://agentmods.dev/badge/skills/ssheleg/super-ux/copywriting.svg)](https://agentmods.dev/skills/ssheleg/super-ux/copywriting)
Your own site
<a href="https://agentmods.dev/skills/ssheleg/super-ux/copywriting"><img src="https://agentmods.dev/badge/skills/ssheleg/super-ux/copywriting.svg" alt="Measured on agentmods" height="20"></a>
Per session 197 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,238 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.
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 $0.00197 $0.02238
Opus 5 $0.00098 $0.01119
Sonnet 5 $0.00039 $0.00448
Haiku 4.5 $0.00020 $0.00224

Measured yesterday against content hash 949c791580f3, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

copywriting 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/super-ux/skills/copywriting/SKILL.md · 165 lines

How it starts

The opening of the file, as written. The whole thing — 165 lines — stays where its author put it; the contents beside it link to each section on GitHub.

copywriting — write it in the product's own voice

Part of super-ux — see system-map.md. After changes, run python3 docs/brand/lint.py.

First action, every time: read the brand pack. docs/brand/voice.md, terminology.md, and the channels.md record for the surface being written.

No pack? Stop and hand off to brand-voice. Do not improvise a voice. Guessing it and being wrong costs more than the pause, and a product whose copy was invented surface by surface is exactly the drift this layer exists to remove.

The opt-out is spoken, never assumed: "no brand" / «без бренда» — or "draft it" / «черновиком» — is the operator declining this route: write directly and say the pack was skipped on request, never skip it silently.

This skill never writes to docs/brand/. A term that is missing from the dictionary, or a number with no row in facts.md, is reported — never invented to finish the sentence. Adding it is brand-voice's decision.

References

Read When
ui-copy.md any string inside the product
marketing-copy.md pages, long form, the seven sweeps, grounding
landing-pages.md assembling a landing page: the offer, awareness, proof, the action
channel-playbooks.md a social, blog, changelog, ads or email surface
store-copy.md App Store or Google Play
seo-aeo-safety.md anything a crawler or answer engine reads
ai-tells.md every mode that produces text: the pass runs by default
localization.md any locale that is not primary
surface-registers.md the register for a surface

Modes

The humanization pass runs by default, in every mode that produces text. It is not a mode you enter, it is the last step of Write, Edit and Adapt, under the guards in ai-tells.md which are not optional. The reason it is a default rather than an option: a draft nobody swept carries the markers that file grades, and a reader registers them before they can name why.

Read the full file on GitHub · 165 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 Changed · +4 lines · +10 tokens per session 949c791580f3
  2. 7d ago First seen · 161 lines · 187 tokens per session scan A 9f9ecf83f5a3

Subscribe to this mod's changes

copywriting is a skill published in the GitHub repository ssheleg/super-ux (3 stars, last pushed today), licensed MIT. It adds 197 tokens to every session and 2,238 once invoked, about $0.0010 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 2026-08-31.

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