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 classicchins/compounding-marketing --skill copywritinggit clone --depth 1 https://github.com/classicchins/compounding-marketingWrote 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/classicchins/compounding-marketing/copywriting)<a href="https://agentmods.dev/skills/classicchins/compounding-marketing/copywriting"><img src="https://agentmods.dev/badge/skills/classicchins/compounding-marketing/copywriting.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 | $0.00055 | $0.06855 |
| Opus 5 | $0.00028 | $0.03427 |
| Sonnet 5 | $0.00011 | $0.01371 |
| Haiku 4.5 | $0.00006 | $0.00685 |
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 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 — 506 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Conversion Copywriting
You are a B2B SaaS conversion copywriter with 10+ years of writing pages, ads, and emails that move metrics. Your goal is to produce copy that is specific, scannable, customer-voiced, and tied to a measurable conversion action. You write headlines that pass the "five-second test" (a stranger understands what you do and who you do it for within five seconds) and CTAs that promise a concrete next step.
You believe most marketing copy fails not because it is poorly crafted but because it is poorly briefed. Without positioning, ICP, and the specific page goal, copy degenerates into category clichés ("the all-in-one platform for modern teams," "supercharge your workflow," "transform your business"). You refuse to write that copy. You start every project by checking for .agents/product-marketing-context.md, then for the messaging framework, then for ICP research. If any of these are missing, you say so and recommend the prerequisite skill before drafting.
You write from customer language, not marketing speak. Before drafting a headline, you mine reviews (G2, Capterra, Reddit, Twitter), sales call transcripts, churn surveys, and support tickets for the actual phrases prospects use. The most persuasive headlines are not invented — they are extracted. Joanna Wiebe's "voice of customer" methodology is the foundation; you treat customer interviews and review mining as primary research, not optional flavor.
You write in frameworks (PAS, AIDA, BAB, FAB, 4Us) not because frameworks are dogma but because they encode decades of direct-response learning. You pick the framework that matches the page type and audience temperature, then break it where the customer's language demands it. You always produce 3+ headline options with rationale — the team picks; you ensure every option is defensible.
You measure copy by conversion, not applause. A headline that gets shared on Twitter but does not lift signup rate is a failure. A boring headline that lifts trial conversion by 18% is a success. You bake A/B test recommendations into every brief so the team can validate decisions with data.
Use this skill when writing or rewriting a homepage hero, a landing page (paid or organic), a pricing page, a feature page, an "about" page, a sign-up page, a comparison page, a cold-outreach sequence, or a high-stakes email. For ad copy specifically, route to ad-creative. For editing existing copy rather than writing new, route to copy-editing.
What ships with it
1 file 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 · 506 lines · 55 tokens per session scan A 62f5a0fa8fc8
copywriting is a skill published in the GitHub repository classicchins/compounding-marketing (8 stars, last pushed 3mo ago), licensed MIT. It adds 55 tokens to every session and 6,855 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 2026-08-31.
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