ljg-skills is a collection of custom Codex skills for tasks such as learning, writing, reading, relationship analysis, image creation, and investment analysis. Codex users install selected skills or the whole collection through a skills command-line interface. The catalogue entries are the collection's individual skills, plugin, and instruction.
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 lijigang/ljg-skills --skill ljg-qagit clone --depth 1 https://github.com/lijigang/ljg-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/skills/lijigang/ljg-skills/ljg-qa)<a href="https://agentmods.dev/skills/lijigang/ljg-skills/ljg-qa"><img src="https://agentmods.dev/badge/skills/lijigang/ljg-skills/ljg-qa/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/lijigang/ljg-skills/ljg-qa"><img src="https://agentmods.dev/badge/skills/lijigang/ljg-skills/ljg-qa.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk warn
- NVIDIA SkillSpector warn
SkillSpector: 1 finding, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium Data Exfiltration · line 45 Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
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 | $0.00170 | $0.01248 |
| Opus 5 | $0.00085 | $0.00624 |
| Sonnet 5 | $0.00034 | $0.00250 |
| Haiku 4.5 | $0.00017 | $0.00125 |
Grade A, and why
ljg-qa scanned grade A with 1 finding 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 12d 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl -s -X POST http://localhost:31337/notify \ What it actually says
ljg-qa: 问答提取
读一份东西,把它的思想拆成「为什么—怎么—边界」的问答链。
读者顺着 Q 走过去,每个 A 砸下来一枚钉子。
你不是
- 不是 FAQ 生成器("什么是 X"——读者一看就跳过)
- 不是摘要换皮(把段落拆成"问/答"两半还是摘要)
- 不是知识点列表(孤立的事实碰撞不出洞察)
- 不是阅读理解题(提问不是为了考读者,是为了切中作者)
你是
把作者的论证骨架翻出来,每根骨头长成一个尖锐的问题。读者沿着 Q 链读,能复现作者的整套思路——而不是被告知结论。
三条铁律
-
Q 切要害 —— 问的是「为什么这个解法成立」「它跟另一种做法差在哪」「它的代价是什么」「它在哪里失效」,不是「它定义是什么」。一个 Q 必须能让答案承重,不能被一句话敷衍过去。
-
A 有形式化收口 —— 每个 A 严格四段:结论(一句话)+ 形式化(用文字 + 简单符号把思想压成一行可视关系,如
A = B + C、旧: X → 新: Y)+ 论证步(怎么想到的)+ 边界(不成立的条件)。形式化是"思想的几何",让读者一眼看出关系。 -
Q 链有方向 —— Q 之间不是并列罗列,是「Q1 答完→Q2 自然冒出来」。读者读完整串 Q,相当于走了一遍作者的推理路径。
工作流
按 Workflows/Extract.md 的步骤执行。
设计参考
Q 怎么提、A 怎么收口的具体模式见 References/QuestionDesign.md。
Voice Notification
执行 workflow 时:
curl -s -X POST http://localhost:31337/notify \
-H "Content-Type: application/json" \
-d '{"message": "Running Extract in ljg-qa"}' \
> /dev/null 2>&1 &
输出文本:
Running **Extract** in **ljg-qa**...
输出
- 格式:org-mode(
*bold*,禁 markdown 语法) - 路径:
~/Documents/notes/ - denote 文件名:
{YYYYMMDDTHHMMSS}--qa-{核心主题 5-10 字}__qa.org
Examples
Example 1: URL
User: /ljg-qa https://example.com/article
→ WebFetch 获取
→ 找观点骨架 → 设计 Q 链 → 写 A 三段
→ org-mode 输出到 ~/Documents/notes/
Example 2: 论文 PDF
User: /ljg-qa ~/Downloads/paper.pdf
→ Read PDF(注意 pages 参数)
→ Q 抽出方法的「为什么」「代价」「边界」
→ 输出 org-mode
Example 3: 直接文本
User: 把这段抽成 Q-A: [text]
→ 跳过获取,直接抽
→ 输出
Gotchas
- AI 默认会写「什么是 X」型问题 —— 教科书腔。生成后扫一遍,凡是 Q 能用一句定义打发的,重写
- AI 默认会让 A 散掉 —— 没有结论句、没有边界、写成一段散文。每个 A 必须严格四段(结论 / 形式化 / 步骤 / 边界)
- AI 默认会把「形式化」写成数学公式 —— 不是。形式化是用文字 + → = ≠ + × 这类符号压一行可视的关系,比如
通才 = 协调,专才 = 干活。是"思想的几何",不是"数学的形式" - AI 默认按章节顺序提问 —— 这是抄目录,不是抽思想。Q 链应该按论证依赖关系排,不按出现顺序
- AI 默认会把 Q-A 理解成「问答游戏」 —— 不是。这里 Q 是凿子,A 是钉子。装饰性的轻问题禁止
- AI 默认会在 A 里堆术语保平安 —— 用术语不算回答。把术语翻译成具体动作和具体物件,否则 A 没承重
What ships with it
2 files 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.
- 12d ago First seen · 99 lines · 170 tokens per session scan A 05ae2438e65a
ljg-qa is a skill published in the GitHub repository lijigang/ljg-skills (7,340 stars, last pushed 3d ago), licensed MIT. It adds 170 tokens to every session and 1,248 once invoked, about $0.0009 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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