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 agentmods add skills/kevinaimonster/skill-hub/linux-helpernpx skills add kevinaimonster/skill-hub --skill linux-helpergit clone --depth 1 https://github.com/kevinaimonster/skill-hubWrote 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/kevinaimonster/skill-hub/linux-helper)<a href="https://agentmods.dev/skills/kevinaimonster/skill-hub/linux-helper"><img src="https://agentmods.dev/badge/skills/kevinaimonster/skill-hub/linux-helper.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 | $0.00176 | $0.02634 |
| Opus 5 | $0.00088 | $0.01317 |
| Sonnet 5 | $0.00035 | $0.00527 |
| Haiku 4.5 | $0.00018 | $0.00263 |
Grade F, and why
linux-helper scanned grade F with 5 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 5d 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.
Hidden instructionshighPrompt injection
Directives inside HTML comments, invisible characters or bidirectional overrides are read by the model and not by the person reviewing the file.
```bash 你的命令 ``` ### 参数解释 - `参数1`：解释 - `参数2`：解释 ### 示例输出 ``` 预期的命令输出（如适用） ``` ### 注意事项 - [安全提醒] - [版本差异] ``` ### Shell 脚本输出 ``` ## 脚本 ```bash #!/bin/bash # 脚本说明：[用途] # 用法：bash script.sh [参数] # 关键逻辑注释 你的脚本代码 ``` ### Asks for rootmediumPrivilege escalation
A mod that escalates privileges can change anything on the machine, not only the project.
| 添加sudo权限 | `usermod -aG sudo username` | Ubuntu | Downloads and executes remote codehighSupply chain
curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.
| `wget \| bash` | 执行未审查的远程脚本 | 先下载审查，再执行 | Recursive force deletehighDestructive command
rm -rf with a variable or a broad path is one typo away from removing the wrong tree.
1. **安全第一**：危险命令必须警告（rm -rf、chmod 777、dd 等），给出安全替代 Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
| `wget \| bash` | 执行未审查的远程脚本 | 先下载审查，再执行 | 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 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.
- 5d ago First seen · 256 lines · 176 tokens per session scan F 4a46481c20c5
linux-helper is a skill published in the GitHub repository kevinaimonster/skill-hub (3 stars, last pushed 5mo ago), with no licence file. It adds 176 tokens to every session and 2,634 once invoked, about $0.0009 per session on Opus 5. A static security scan graded it F with 5 findings (hidden instructions, asks for root, downloads and executes remote code). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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