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 skills/manhvann/codexkit/copywritingnpx skills add manhvann/codexkit --skill copywritinggit clone --depth 1 https://github.com/manhvann/codexkitWhat 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 | $0.00060 | $0.00910 |
| Opus 5 | $0.00030 | $0.00455 |
| Sonnet 5 | $0.00012 | $0.00182 |
| Haiku 4.5 | $0.00006 | $0.00091 |
Grade A, and why
ck: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 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.
Copies of this mod
2 near-identical copies found in the catalogue:
- ck:copywriting — 91% identical, 14 lines differ
- copywriting — 84% identical, 34 lines differ
How it starts
The opening of the file, as written. The whole thing — 95 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Copywriting
Formulas, templates, patterns, and writing styles for high-converting copy.
When to Use
- Writing headlines/subject lines, landing page copy, email campaigns
- Social posts, product descriptions, CTA optimization, A/B variations
- Applying custom writing styles from user documents
Writing Styles
Load: references/writing-styles.md | Full catalog: assets/writing-styles/default.md (50 styles)
Extract styles from multi-format files:
python .agents/skills/copywriting/scripts/extract-writing-styles.py --list # List files
python .agents/skills/copywriting/scripts/extract-writing-styles.py --style <name> # Extract style
Formats: .md .txt .pdf .docx .xlsx .pptx .jpg .png .mp4 (docs/media need GEMINI_API_KEY)
Copy Formulas
Load: references/copy-formulas.md
| Formula | Structure | Best For |
|---|---|---|
| AIDA | Attention → Interest → Desire → Action | Landing pages, ads |
| PAS | Problem → Agitate → Solution | Email, sales pages |
| BAB | Before → After → Bridge | Testimonials, case studies |
| 4Ps | Promise → Picture → Proof → Push | Long-form sales |
| 4Us | Urgent + Unique + Useful + Ultra-specific | Headlines |
| FAB | Feature → Advantage → Benefit | Product descriptions |
Headlines
Load: references/headline-templates.md
Patterns: "How to [X] without [Y]" • "[Number] ways to [benefit]" • "The secret to [outcome]" • "Why [belief] is wrong"
Email Copy
Load: references/email-copy.md
Subject lines: Curiosity gap • Benefit-driven • Question • Urgency
Landing Pages & CTAs
Load: references/landing-page-copy.md | references/cta-patterns.md
Hero: Headline (promise) → Subheadline (how) → CTA (action) → Social proof CTAs: "Start [verb]ing" • "Get [benefit]" • "Yes, I want [benefit]"
Workflows
| Workflow | Purpose | Use When |
|---|---|---|
references/workflow-cro.md |
CRO optimization (25 principles) + plan creation workflow | Conversion optimization & CRO plan requests |
references/workflow-enhance.md |
Copy enhancement | Improving existing copy |
references/workflow-fast.md |
Quick copy generation | Simple, time-sensitive requests |
references/workflow-good.md |
Quality copy with research | High-stakes content |
What ships with it
14 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.
- references/copy-formulas.md 3.7 KB
- references/cta-patterns.md 2.8 KB
- references/email-copy.md 3.2 KB
- references/headline-templates.md 3.2 KB
- references/landing-page-copy.md 4.1 KB
- references/power-words.md 3.9 KB
- references/social-media-copy.md 3.5 KB
- references/workflow-cro.md 4.0 KB
- references/workflow-enhance.md 1.1 KB
- references/workflow-fast.md 768 B
- references/workflow-good.md 1.4 KB
- references/writing-styles.md 5.9 KB
- scripts/extract-writing-styles.py 11 KB runs code
- templates/copy-brief.md 630 B
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 · 95 lines · 60 tokens per session scan A be1751d48357
ck:copywriting is a skill published in the GitHub repository manhvann/codexkit (88 stars, last pushed 4d ago), licensed MIT. It adds 60 tokens to every session and 910 once invoked, about $0.0003 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
systematic-debugging
Use when encountering any bug, test failure, or unexpected behavior, before proposing fixes.
brainstorming
You MUST use this before any creative work - creating features, building components, adding functionality, or modifying behavior. Explores user intent, requirements and design before implementation.
chat-pet-sprite-creation
Use when creating or changing VS Code chat pet sprite art, sprite sheets, state animations, eye treatments, Stable/Insiders variants, or pet transitions under src/vs/workbench/contrib/chat/browser/widget/media/chatPet.
cpu-profile-analysis
Analyze V8/Chrome CPU profiles (.cpuprofile) and DevTools trace files (Trace-.json). Use when: profiling performance, investigating slow functions, comparing code paths, finding bottlenecks, analyzing timeToRequest, understanding call trees from sampling profiler data, analyzing layout/paint/rendering, investigating…
babysit-pr
Babysit a GitHub pull request after creation by continuously polling review comments, CI checks/workflow runs, and mergeability state until the PR is merged/closed or user help is required. Diagnose failures, retry likely flaky failures up to 3 times, auto-fix/push branch-related issues when appropriate, and keep…
imagegen
Generate or edit raster images when the task benefits from AI-created bitmap visuals such as photos, illustrations, textures, sprites, mockups, or transparent-background cutouts. Use when Codex should create a brand-new image, transform an existing image, or derive visual variants from references, and the output…