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 hezkvectory/hermes-edu-skills --skill primary-math-mental-arithmeticgit clone --depth 1 https://github.com/hezkvectory/hermes-edu-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/hezkvectory/hermes-edu-skills/primary-math-mental-arithmetic)<a href="https://agentmods.dev/skills/hezkvectory/hermes-edu-skills/primary-math-mental-arithmetic"><img src="https://agentmods.dev/badge/skills/hezkvectory/hermes-edu-skills/primary-math-mental-arithmetic/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/hezkvectory/hermes-edu-skills/primary-math-mental-arithmetic"><img src="https://agentmods.dev/badge/skills/hezkvectory/hermes-edu-skills/primary-math-mental-arithmetic.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 | $0.00051 | $0.01321 |
| Opus 5 | $0.00026 | $0.00660 |
| Sonnet 5 | $0.00010 | $0.00264 |
| Haiku 4.5 | $0.00005 | $0.00132 |
Grade A, and why
primary-math-mental-arithmetic 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 11d 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 — 148 lines — stays where its author put it; the contents beside it link to each section on GitHub.
小学口算速练 Skill
为小学生生成短、准、可批改的口算训练，让每天 5-10 分钟练出速度、准确率和数感。
这个 Skill 解决什么问题 / Problem
为小学生生成短、准、可批改的口算训练，让每天 5-10 分钟练出速度、准确率和数感。
最适合 / Best For
- 小学每日口算打卡
- 家长陪练计算
- 老师布置短练
- 计算速度和准确率提升
不适合 / Not For
- 超纲竞赛题
- 长时间机械刷题
- 没有批改反馈的重复练习
使用前请准备 / Inputs
- 年级
- 计算范围
- 题量或时长
- 难度
- 最近容易错的类型
推荐工作流 / Recommended Workflow
- 确认年级和计算范围
- 生成短组口算题
- 给答案和批改标准
- 根据错误分类
- 安排下一组针对练习
输出格式 / Output Format
- 训练目标
- 口算题组
- 答案
- 错因记录
- 下一组建议
质量检查 / Quality Checks
- 题量匹配时长
- 难度不能跳级
- 答案必须可核验
- 错题要转化为下次训练点
没有平台工具时 / Standalone Fallback
- 没有练习工具时，直接生成题目和答案。
- 没有历史记录时，从年级默认范围开始。
示例提示 / Example Prompts
- 二年级下册表内除法，生成 20 道 5 分钟口算。
- 孩子退位减法容易错，帮我做一组专项口算。
适用场景 / When To Use
当学习者、家长、老师、学校或教育应用开发者需要处理以下场景时，可以使用这个 Skill。
最适合的场景：
- 口算速练
- 每日打卡
适用角色：
- 学习者
- 家长
- 老师
调用信号 / Invocation Signals
意图：
primary_math_mental_arithmeticdaily_practice口算速练每日打卡
示例表达：
- 开始小学口算速练 Skill
- 帮我做口算速练
- 根据当前上下文执行小学口算速练 Skill
公开 Skill 契约 / Public Skill Contract
- Workflow:
primary_math_mental_arithmetic.run - Category:
daily-practice - Stages:
primary - Subjects:
数学 - Abilities:
计算,数感 - Quality Tier:
curated - Standalone Support:
needs_user_input - Public Release:
recommended - Requires Tools:
context.load,entitlement.check,workflow.create,practice.generate_items,practice.grade_answers,memory.write - Requires Data:
年级/水平,今日知识点或单元,可用时间,最近错题或薄弱点,使用场景：学生自练/家长陪练/老师布置 - Export Mode:
installable - Release Channel:
recommended
成熟度备注：
- 已按精品 Skill 标准补充边界、输入、工作流、输出格式和示例。
参数化使用 / Parameters
这个 Skill 不再把年级、册别、单元、知识点和难度拆成大量独立 Skill。请在调用时通过参数或自然语言补充这些信息。
- Grades:
一年级,二年级,三年级,四年级,五年级,六年级 - Semesters:
上册,下册 - Scenarios:
口算速练,每日打卡 - Difficulties:
基础,标准,提高 - Parameterized Dimensions:
grade,semester,unit,lesson,knowledgePointCodes,scenario,difficulty
独立 Hermes 使用方式 / Standalone Hermes Usage
这个 Skill 可以通过 Hermes 的 skills.external_dirs 作为外部 Skill 加载。
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.
- 11d ago First seen · 148 lines · 51 tokens per session scan A 1b1eb6796668
primary-math-mental-arithmetic is a skill published in the GitHub repository hezkvectory/hermes-edu-skills (93 stars, last pushed 3mo ago), licensed MIT. It adds 51 tokens to every session and 1,321 once invoked, about $0.0003 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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