Borrowing it
Nothing to install: this file belongs to Simon-Hwang/gg-plugins. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/Simon-Hwang/gg-plugins/main/.claude/skills/skill-stocktake/SKILL.mdgit clone --depth 1 https://github.com/Simon-Hwang/gg-pluginsWrote 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/simon-hwang/gg-plugins/skill-stocktake)<a href="https://agentmods.dev/skills/simon-hwang/gg-plugins/skill-stocktake"><img src="https://agentmods.dev/badge/skills/simon-hwang/gg-plugins/skill-stocktake.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 | $0.00034 | $0.01916 |
| Opus 5 | $0.00017 | $0.00958 |
| Sonnet 5 | $0.00007 | $0.00383 |
| Haiku 4.5 | $0.00003 | $0.00192 |
Grade A, and why
skill-stocktake scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 6d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Enumerates other installed skillslowAgent snooping
Other skills' SKILL.md files reveal prompts, capabilities and secrets that should be invisible to peers.
(Project dir is auto-detected from `$PWD/.claude/skills`; pass it explicitly only if needed) Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.
The source is not reproduced here
No licence file
A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.
What ships with it
3 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.
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.
- 6d ago First seen · 195 lines · 34 tokens per session scan A b48b54c68e5d
skill-stocktake is a skill published in the GitHub repository Simon-Hwang/gg-plugins (2 stars, last pushed 1mo ago), with no licence file. It adds 34 tokens to every session and 1,916 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 1 finding (enumerates other installed skills). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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