Borrowing it
Nothing to install: this file belongs to malwarebo/nyrve. 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/malwarebo/nyrve/main/.github/skills/hygiene/SKILL.mdgit clone --depth 1 https://github.com/malwarebo/nyrveWrote 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/malwarebo/nyrve/hygiene)<a href="https://agentmods.dev/skills/malwarebo/nyrve/hygiene"><img src="https://agentmods.dev/badge/skills/malwarebo/nyrve/hygiene/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/malwarebo/nyrve/hygiene"><img src="https://agentmods.dev/badge/skills/malwarebo/nyrve/hygiene.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 | $0.00056 | $0.00388 |
| Opus 5.5 | $0.00022 | $0.00155 |
| Sonnet 5.5 | $0.00011 | $0.00078 |
| Haiku 4.5 | $0.00006 | $0.00039 |
Grade A, and why
hygiene 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
Hygiene Checks
VS Code runs a hygiene check as a git pre-commit hook. Commits will be rejected if hygiene fails.
Running the hygiene check
Always run the pre-commit hygiene check before declaring work complete. This catches issues that would block a commit.
To run the hygiene check on your staged files:
npm run precommit
This executes node --experimental-strip-types build/hygiene.ts, which scans only staged files (from git diff --cached).
To check specific files directly (without staging them first):
node --experimental-strip-types build/hygiene.ts path/to/file.ts
What it checks
The hygiene linter scans staged files for issues including (but not limited to):
- Unicode characters: Non-ASCII characters (em-dashes, curly quotes, emoji, etc.) are rejected. Use ASCII equivalents in comments and code. Suppress with
// allow-any-unicode-next-lineor// allow-any-unicode-comment-file. - Double-quoted strings: Only use
"double quotes"for externalized (localized) strings. Use'single quotes'everywhere else. - Copyright headers: All files must include the Microsoft copyright header.
- Indentation: Tabs only, no spaces for indentation.
- Formatting: TypeScript files must match the formatter output (run
Format Documentto fix). - ESLint: TypeScript files are linted with ESLint.
- Stylelint: CSS files are linted with stylelint.
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 · 39 lines · 56 tokens per session scan A 69c1b34e4e77
hygiene is a skill published in the GitHub repository malwarebo/nyrve (5 stars, last pushed 4mo ago), licensed MIT. It adds 56 tokens to every session and 388 once invoked, about $0.0002 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 2026-08-31.
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