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/sunoftheeast/highschool-study-claude-code/tutor-lessonnpx skills add SunOfTheEast/highschool-study-claude-code --skill tutor-lessongit clone --depth 1 https://github.com/SunOfTheEast/highschool-study-claude-codeWrote 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/sunoftheeast/highschool-study-claude-code/tutor-lesson)<a href="https://agentmods.dev/skills/sunoftheeast/highschool-study-claude-code/tutor-lesson"><img src="https://agentmods.dev/badge/skills/sunoftheeast/highschool-study-claude-code/tutor-lesson.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 | $0.00025 | $0.02665 |
| Opus 5 | $0.00013 | $0.01333 |
| Sonnet 5 | $0.00005 | $0.00533 |
| Haiku 4.5 | $0.00003 | $0.00266 |
Grade A, and why
tutor-lesson 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 4d 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.
The source is not reproduced here
Licensed AGPL-3.0
The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.
What ships with it
7 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.
- references/memory-consolidation.md 4.5 KB
- references/memory-recall.md 1.6 KB
- references/teaching-techniques/concept-boundary-repair.md 1.7 KB
- references/teaching-techniques/frustration-and-pause.md 755 B
- references/teaching-techniques/independent-transfer-check.md 1.1 KB
- references/teaching-techniques/INDEX.md 833 B
- references/teaching-techniques/method-comparison.md 1.9 KB
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.
- 4d ago First seen · 167 lines · 25 tokens per session scan A 308182e7b51a
tutor-lesson is a skill published in the GitHub repository SunOfTheEast/highschool-study-claude-code (5 stars, last pushed 21d ago), licensed AGPL-3.0. It adds 25 tokens to every session and 2,665 once invoked, about $0.0001 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 2026-08-31.
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