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 etrebels/claude-code-growth-os --skill example-skillgit clone --depth 1 https://github.com/etrebels/claude-code-growth-osWrote 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/etrebels/claude-code-growth-os/example-skill)<a href="https://agentmods.dev/skills/etrebels/claude-code-growth-os/example-skill"><img src="https://agentmods.dev/badge/skills/etrebels/claude-code-growth-os/example-skill/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/etrebels/claude-code-growth-os/example-skill"><img src="https://agentmods.dev/badge/skills/etrebels/claude-code-growth-os/example-skill.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00029 | $0.00168 |
| Opus 5.5 | $0.00012 | $0.00067 |
| Sonnet 5.5 | $0.00006 | $0.00034 |
| Haiku 4.5 | $0.00003 | $0.00017 |
Grade A, and why
example-skill 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 1mo 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.
What it actually says
Example Skill (template)
A skill is a reusable unit of work Claude runs when your request matches its description. The description is the trigger — keep it specific, or it fires at the wrong time (or never).
This one does nothing on purpose. Swap it for your own. A good skill:
- does one job well,
- reads from
ops/(ordemo/) instead of asking for context it could find, - ends by writing its result somewhere durable — a file, a log.
See .claude/skills/status-update/ and .claude/skills/triage/ for two worked examples.
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.
- 1mo ago First seen · 17 lines · 29 tokens per session scan A 20ef157b875e
example-skill is a skill published in the GitHub repository etrebels/claude-code-growth-os (21 stars, last pushed today), licensed MIT. It adds 29 tokens to every session and 168 once invoked, about $0.0001 per session on Opus 5.5. 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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