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.
git clone --depth 1 https://github.com/yasunori0418/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/plugins/yasunori0418/skills/nix)<a href="https://agentmods.dev/plugins/yasunori0418/skills/nix"><img src="https://agentmods.dev/badge/plugins/yasunori0418/skills/nix.svg" alt="Measured on agentmods" height="20"></a>Grade A, and why
nix-skills 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 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.
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
{
"$schema": "https://json.schemastore.org/claude-code-plugin-manifest.json",
"name": "nix-skills",
"description": "Nix 運用スキル群（nix-cache-check / nix-devenv / nix-store-lookup）。バイナリキャッシュ確認、flake-parts 開発環境構築、/nix/store の store path 特定を扱う。",
"version": "0.2.2",
"author": {
"name": "yasunori0418"
},
"license": "MIT",
"keywords": ["claude-code", "agentskills", "nix"],
"skills": ["./nix-cache-check", "./nix-devenv", "./nix-store-lookup"]
}
What it installs
The manifest is a name and a version. 3 skills travel with it, and installing the plugin installs all of them — 405 tokens a session between them. Each is measured on its own page, and each can be installed alone.
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 · 13 lines scan A cca0409ecb50
nix-skills is a plugin published in the GitHub repository yasunori0418/skills (9 stars, last pushed yesterday), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. 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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