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 mingchen666/Reviva --skill study-companion-engit clone --depth 1 https://github.com/mingchen666/RevivaWrote 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/mingchen666/reviva/study-companion-en)<a href="https://agentmods.dev/skills/mingchen666/reviva/study-companion-en"><img src="https://agentmods.dev/badge/skills/mingchen666/reviva/study-companion-en/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/mingchen666/reviva/study-companion-en"><img src="https://agentmods.dev/badge/skills/mingchen666/reviva/study-companion-en.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 | $0.00196 | $0.05048 |
| Opus 5.5 | $0.00078 | $0.02019 |
| Sonnet 5.5 | $0.00039 | $0.01010 |
| Haiku 4.5 | $0.00020 | $0.00505 |
Grade A, and why
study-companion-en 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 1mo 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
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 ships with it
54 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.
- agents/openai.yaml 293 B
- config.json 679 B
- references/animation.md 4.9 KB
- references/modes/feynman.md 7.7 KB
- references/modes/knowledge-map.md 5.4 KB
- references/modes/practice.md 4.3 KB
- references/modes/socratic.md 9.6 KB
- references/modes/spaced-repetition.md 14 KB
- references/modes/teach-ai.md 8.0 KB
- references/modes/visual.md 15 KB
- references/question-banks/biology.md 31 KB
- references/question-banks/chemistry.md 27 KB
- references/question-banks/cs.md 20 KB
- references/question-banks/english.md 19 KB
- references/question-banks/humanities.md 36 KB
- references/question-banks/math.md 27 KB
- references/question-banks/overview.md 4.2 KB
- references/question-banks/physics.md 20 KB
- references/stages/education-levels.md 7.1 KB
- references/subjects/biology.md 6.5 KB
- references/subjects/chemistry.md 5.1 KB
- references/subjects/cs.md 5.9 KB
- references/subjects/english.md 6.7 KB
- references/subjects/humanities.md 6.0 KB
- references/subjects/math.md 4.6 KB
- references/subjects/physics.md 5.5 KB
- references/workflows/active-recall.md 6.1 KB
- references/workflows/concept-learning.md 6.5 KB
- references/workflows/error-analysis.md 3.4 KB
- references/workflows/essay-writing.md 6.9 KB
- references/workflows/exam-prep.md 8.1 KB
- references/workflows/exam-review.md 4.2 KB
- references/workflows/homework-help.md 3.1 KB
- references/workflows/problem-solving.md 6.8 KB
- requirements.txt 211 B
- scripts/__init__.py 0 B runs code
- scripts/error-book-template.html 62 KB
- scripts/flashcard-template.html 21 KB
- scripts/formula-sheet-template.html 36 KB
- scripts/gen_chart.py 8.4 KB runs code
- scripts/gen_flashcard_data.py 4.1 KB runs code
- scripts/gen_study_guide.py 5.1 KB runs code
- scripts/highlight_code.py 3.9 KB runs code
- scripts/interactive-diagram-template.html 44 KB
- scripts/knowledge-graph-template.html 42 KB
- scripts/math-viz-template.html 15 KB
- scripts/mindmap-template.html 34 KB
- scripts/periodic-table-template.html 50 KB
- scripts/practice-mode-template.html 73 KB
- scripts/presentation-template.html 27 KB
- scripts/quiz-template.html 64 KB
- scripts/study-planner-template.html 79 KB
- scripts/timeline-template.html 46 KB
- scripts/vocabulary-book-template.html 26 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.
- 1mo ago First seen · 399 lines · 196 tokens per session scan A 2a15bcff1466
study-companion-en is a skill published in the GitHub repository mingchen666/Reviva (293 stars, last pushed 2d ago), with no licence file. It adds 196 tokens to every session and 5,048 once invoked, about $0.0008 per session on Opus 5.5. 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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