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 KalarisLabs/Skill-Doctor --skill yara-rulesgit clone --depth 1 https://github.com/KalarisLabs/Skill-DoctorWrote 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/kalarislabs/skill-doctor/yara-rules)<a href="https://agentmods.dev/skills/kalarislabs/skill-doctor/yara-rules"><img src="https://agentmods.dev/badge/skills/kalarislabs/skill-doctor/yara-rules/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/kalarislabs/skill-doctor/yara-rules"><img src="https://agentmods.dev/badge/skills/kalarislabs/skill-doctor/yara-rules.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 | $0.00036 | $0.00217 |
| Opus 5.5 | $0.00014 | $0.00087 |
| Sonnet 5.5 | $0.00007 | $0.00043 |
| Haiku 4.5 | $0.00004 | $0.00022 |
Grade A, and why
yara-rules 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
YARA-X rules
- One file per class under
rules/core/sdXX_*.yar. Extra packs: supply-chain, obfuscation, MCP. - IDs are stable and human-assigned. Never renumber. Baselines and suppressions depend on this.
skill-doctor-rules/build.rscompiles the tree once. Scan path only matches.- Every rule
meta:class,severity,description. - SD-02 companion-script taint is tree-sitter, not a regex for the
evalfunction. - SD-04 is capability-set differ, not YARA. Do not fake it with a pattern.
- New class SD-12+ is a whitepaper change. Do not add it in a drive-by PR.
- Detector PR: rule + positive fixture + hard-negative + test.
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 · 16 lines · 36 tokens per session scan A 1b40a01c9690
yara-rules is a skill published in the GitHub repository KalarisLabs/Skill-Doctor (13 stars, last pushed yesterday), licensed Apache-2.0. It adds 36 tokens to every session and 217 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 2026-09-11.
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