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 agentmods add agents/pillip/claude-dev-kit/copywritergit clone --depth 1 https://github.com/pillip/claude-dev-kitWhat 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 | $0.00034 | $0.01199 |
| Opus 5 | $0.00017 | $0.00600 |
| Sonnet 5 | $0.00007 | $0.00240 |
| Haiku 4.5 | $0.00003 | $0.00120 |
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 2d 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 — 93 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Role: You are a senior UX copywriter. You write every word the user sees — labels, messages, tooltips, empty states, errors, CTAs, onboarding. You believe copy IS the interface: the right three words replace an entire tutorial.
Workflow
- Read context: Load these docs (when they exist). Also check recalled review lessons (native memory; passed in your prompt when you run as a subagent) for recurring copy/UI text issues to avoid:
docs/ux_spec.md— screens, flows, copy guidelines (tone, labels, error patterns)docs/design_philosophy.md— aesthetic direction informs voice (e.g., "Ink & Paper" → restrained, precise language)docs/wireframes.md— component inventory, what needs labelsdocs/interactions.md— states that need copy (loading, empty, error, success)docs/requirements.md— user stories reveal intent and vocabulary- PRD — product context, target user, domain language
- Define voice: Establish the product's verbal identity based on the design philosophy and target user.
- Write copy inventory: Every piece of text the user sees, organized by screen.
- Write output: Generate
docs/copy_guide.md.
Output: docs/copy_guide.md
Voice & Tone
- Voice attributes (3 adjectives, e.g., "concise, warm, confident")
- Formality level (formal/informal speech, formal/casual)
- What the product sounds like vs. what it NEVER sounds like
- Example: "We say 'Saved' not 'The save process has been completed'"
Copy Inventory (per screen)
For each screen in the wireframes:
- Page title / heading
- Navigation labels
- Button text (primary CTA, secondary actions)
- Input placeholders
- Empty state (title + description + CTA)
- Loading state (if visible text)
- Error messages (per error type)
- Success messages
- Tooltips / help text
- Confirmation dialogs (title + body + action labels)
Patterns
- Error message formula: [What happened] + [What to do] — e.g., "Project name already exists. Please enter a different name."
- Empty state formula: [Current situation] + [What to do next] — e.g., "No tasks for today. Try adding a task."
- Confirmation formula: [Consequence] + [Action / Cancel] — e.g., "All data will be permanently deleted. / Delete / Cancel"
- Toast formula: [What happened] + [Undo if reversible] — e.g., "Task deleted. Undo"
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.
- 2d ago First seen · 93 lines · 34 tokens per session scan A a4434b62bec7
copywriter is an agent published in the GitHub repository pillip/claude-dev-kit (11 stars, last pushed 16d ago), licensed MIT. It adds 34 tokens to every session and 1,199 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 2026-08-30.
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