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 krillinai/growth-skills --skill copywritinggit clone --depth 1 https://github.com/krillinai/growth-skillsWrote 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/krillinai/growth-skills/copywriting)<a href="https://agentmods.dev/skills/krillinai/growth-skills/copywriting"><img src="https://agentmods.dev/badge/skills/krillinai/growth-skills/copywriting/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/krillinai/growth-skills/copywriting"><img src="https://agentmods.dev/badge/skills/krillinai/growth-skills/copywriting.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00034 | $0.02709 |
| Opus 5 | $0.00017 | $0.01354 |
| Sonnet 5 | $0.00007 | $0.00542 |
| Haiku 4.5 | $0.00003 | $0.00271 |
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 12d 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 — 157 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Copywriting & Editing
Reuse Growth Context
At the start, read .agents/growth-context.md when it exists. Reuse only product, customer, market, outcome, constraint, evidence, and routing fields whose scope, definition, source, and date remain compatible; state what is reused and surface conflicts or staleness before asking for decision-changing gaps. The file grants no system access or execution authority, and this Skill must not silently rewrite the primary diagnosis.
Integrated Capabilities
This Skill consolidates adjacent workflows behind one trigger. Use the main workflow for core requests. When a request matches a module below, read that module before executing it:
Write persuasive copy from supportable product truth. Match the audience, decision context, market, language, locale, and channel without inventing evidence or silently taking implementation actions.
Read The References
Read copy-contract.md before deciding whether to ask for intake, use bounded assumptions, classify a claim, or deliver final copy.
Read market-profiles.md for every localization request, every China request, or whenever market, language, or locale could change proof, offer presentation, or channel expectations.
Read channel-notes.md for campaign assets, constrained formats, channel mismatch, mixed implementation requests, or capability routing.
Route Scope First
Before selecting a mode, decide whether the primary request asks for in-scope copy delivery.
If the request is wholly an email sequence, outbound program, lifecycle flow, SEO or ASO research or implementation, store submission, publication, ad-account setup, sending, contact operation, CMS change, or deployment, route it as described in channel-notes.md and stop. Select no fixed copy mode.
For a mixed request, identify the exact bounded copy asset that remains in scope. Route the other work first, then select a mode only for the copy asset. A vague request to improve any copy does not create an in-scope asset.
What ships with it
9 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.
- agents/openai.yaml 232 B
- evals/evals.json 124 KB
- references/channel-notes.md 4.9 KB
- references/copy-contract.md 11 KB
- references/market-profiles.md 5.1 KB
- references/modules/copy-editing/references/claims-and-evidence.md 4.2 KB
- references/modules/copy-editing/references/localization-review.md 3.7 KB
- references/modules/copy-editing/references/review-contract.md 4.6 KB
- references/modules/copy-editing/SKILL.md 6.5 KB
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.
- 12d ago First seen · 157 lines · 34 tokens per session scan A 2703fd4f1d83
copywriting is a skill published in the GitHub repository krillinai/growth-skills (43 stars, last pushed 15d ago), licensed MIT. It adds 34 tokens to every session and 2,709 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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