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/castor6/tactus/fetch-linuxdo-postnpx skills add Castor6/tactus --skill fetch-linuxdo-postgit clone --depth 1 https://github.com/Castor6/tactusWhat 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 | $0.00034 | $0.01770 |
| Opus 5 | $0.00017 | $0.00885 |
| Sonnet 5 | $0.00007 | $0.00354 |
| Haiku 4.5 | $0.00003 | $0.00177 |
Grade A, and why
fetch-linuxdo-post 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 2d 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.
How it starts
The opening of the file, as written. The whole thing — 184 lines — stays where its author put it; the contents beside it link to each section on GitHub.
使用说明
通过 API 请求获取 linux.do 论坛帖子的正文和评论区内容，支持解析评论之间的回复关系。
前置条件
脚本需要在 linux.do 页面上执行，浏览器会自动携带用户的登录 cookie。
脚本参数
通过 arguments 传入，脚本中通过 __args__ 获取：
| 参数 | 类型 | 必填 | 说明 |
|---|---|---|---|
topicId |
number/string | 是 | 帖子 ID |
调用示例
{
"skill_name": "fetch-linuxdo-post",
"script_path": "scripts/fetch-post.js",
"arguments": { "topicId": 12345 }
}
返回值
返回值有两种模式，取决于 JSON API 是否可用：
模式一：threads（讨论串模式，JSON API 正常）
{
"success": true,
"mode": "threads",
"topic": {
"id": 12345,
"title": "帖子标题"
},
"mainPost": {
"author": "作者名",
"content": "帖子正文内容",
"createdAt": "2026-01-15 16:14:29"
},
"threads": [
[
{
"postNumber": 2,
"author": "评论者",
"content": "评论内容",
"createdAt": "2026-01-15 16:14:55",
"replyTo": 1
},
{
"postNumber": 5,
"author": "回复者",
"content": "回复内容",
"createdAt": "2026-01-15 16:15:30",
"replyTo": 2
}
]
],
"totalPosts": 10,
"threadsCount": 3,
"message": "成功获取帖子内容，共 10 条帖子（含主帖），3 个讨论串"
}
模式二：comments（原始评论模式，JSON API 异常时降级）
{
"success": true,
"mode": "comments",
"topic": {
"id": 12345,
"title": null
},
"mainPost": {
"author": "作者名",
"content": "帖子正文内容",
"createdAt": "2026-01-15 16:14:29"
},
"comments": [
{
"postNumber": 2,
"author": "评论者",
"content": "评论内容",
"createdAt": "2026-01-15 16:14:55"
}
],
"totalPosts": 10,
"commentsCount": 9,
"message": "成功获取帖子内容（降级模式），共 10 条帖子（含主帖），9 条评论"
}
数据结构说明
mode: 返回模式，threads或commentsmainPost: 帖子正文（1楼）threads: 讨论串数组，每个讨论串是按楼层排序的评论数组（仅 threads 模式）comments: 原始评论列表，按楼层排序（仅 comments 模式）replyTo: 回复的目标楼层（仅 threads 模式有此字段）
使用流程
- 激活此 skill
- 传入帖子 ID 执行
scripts/fetch-post.js - 获取结构化的帖子内容和评论数据
- 可用于后续的内容总结、分析等操作
What ships with it
1 file 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.
- 2d ago First seen · 184 lines · 34 tokens per session scan A 2dab1e3a3902
fetch-linuxdo-post is a skill published in the GitHub repository Castor6/tactus (378 stars, last pushed 3mo ago), licensed Apache-2.0. It adds 34 tokens to every session and 1,770 once invoked, about $0.0002 per session on Opus 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 2026-08-30.
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