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.
npx skills add daffy0208/ai-dev-standards --skill copywritergit clone --depth 1 https://github.com/daffy0208/ai-dev-standardsWrote 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.
[](https://agentmods.dev/skills/daffy0208/ai-dev-standards/copywriter)<a href="https://agentmods.dev/skills/daffy0208/ai-dev-standards/copywriter"><img src="https://agentmods.dev/badge/skills/daffy0208/ai-dev-standards/copywriter.svg" alt="Measured on agentmods" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00015 | $0.03256 |
| Opus 5 | $0.00008 | $0.01628 |
| Sonnet 5 | $0.00003 | $0.00651 |
| Haiku 4.5 | $0.00002 | $0.00326 |
Grade A, and why
copywriter 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.
How it starts
The opening of the file, as written. The whole thing — 625 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Copywriter Skill
I help you write clear, compelling copy for your product, marketing, and user experience.
What I Do
UX Writing:
- Button labels, form fields, error messages
- Empty states, onboarding flows
- Tooltips, help text
- Confirmation dialogs
Marketing Copy:
- Landing pages, hero sections
- Feature descriptions
- Call-to-action (CTA) buttons
- Email campaigns
Product Content:
- Product descriptions
- Feature announcements
- Release notes
- Documentation
UX Writing Patterns
Button Labels
// ❌ Bad: Vague, passive
<Button>Submit</Button>
<Button>OK</Button>
<Button>Click Here</Button>
// ✅ Good: Specific, action-oriented
<Button>Create Account</Button>
<Button>Save Changes</Button>
<Button>Start Free Trial</Button>
Guidelines:
- Use verb + noun ("Save Changes" not "Save")
- Be specific ("Delete Post" not "Delete")
- Show outcome ("Start Free Trial" not "Submit")
Error Messages
// ❌ Bad: Technical, blaming user
"Invalid input"
"Error 422: Unprocessable Entity"
"You entered the wrong password"
// ✅ Good: Helpful, actionable
"Please enter a valid email address"
"We couldn't find an account with that email"
"Password must be at least 8 characters"
// Implementation
function PasswordInput() {
const [error, setError] = useState('')
const validate = (password: string) => {
if (password.length < 8) {
setError('Password must be at least 8 characters')
} else if (!/[A-Z]/.test(password)) {
setError('Password must include at least one uppercase letter')
} else if (!/[0-9]/.test(password)) {
setError('Password must include at least one number')
} else {
setError('')
}
}
return (
<div>
<input type="password" onChange={(e) => validate(e.target.value)} />
{error && <p className="text-red-600">{error}</p>}
</div>
)
}
Error Message Formula:
- What happened
- Why it happened (optional)
- How to fix it
What ships with it
2 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.
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.
- 8d ago First seen · 625 lines · 15 tokens per session scan A 62653082dde9
copywriter is a skill published in the GitHub repository daffy0208/ai-dev-standards (36 stars, last pushed 8mo ago), licensed MIT. It adds 15 tokens to every session and 3,256 once invoked, about $0.0001 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 2026-08-30.
Other skills, from other repositories
copywriter
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growth-marketer
!cat skills/shared/protocols/ux-protocol.md 2>/dev/null || true !cat skills/shared/protocols/input-validation.md 2>/dev/null || true !cat skills/shared/protocols/tool-efficiency.md 2>/dev/null || true !cat .production-grade.yaml 2>/dev/null || echo "No config — using defaults".
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42 marketing agent skills and plugins for Claude Code, Codex, Gemini CLI, Cursor, OpenClaw, and 6 more coding agents. 7 pods: content, SEO, CRO, channels, growth, intelligence, sales. Foundation context + orchestration router. 27 Python tools (stdlib-only).