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 CharlesHahn/DuIvySkills --skill duivyprocedures-skillsgit clone --depth 1 https://github.com/CharlesHahn/DuIvySkillsWrote 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/charleshahn/duivyskills/duivyprocedures-skills)<a href="https://agentmods.dev/skills/charleshahn/duivyskills/duivyprocedures-skills"><img src="https://agentmods.dev/badge/skills/charleshahn/duivyskills/duivyprocedures-skills/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/charleshahn/duivyskills/duivyprocedures-skills"><img src="https://agentmods.dev/badge/skills/charleshahn/duivyskills/duivyprocedures-skills.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 | $0.00261 | $0.03436 |
| Opus 5.5 | $0.00104 | $0.01374 |
| Sonnet 5.5 | $0.00052 | $0.00687 |
| Haiku 4.5 | $0.00026 | $0.00344 |
Grade A, and why
DuIvyProcedures-skills 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 2mo 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 GPL-3.0
The repository is licensed GPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.
What ships with it
34 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/DCCM.md 1.1 KB
- references/Density.md 580 B
- references/DensityMap.md 885 B
- references/FEL.md 791 B
- references/gmx_cluster.md 878 B
- references/gmx_DCCM.md 588 B
- references/gmx_Density.md 605 B
- references/gmx_dPCA.md 799 B
- references/gmx_DSSP.md 694 B
- references/gmx_FEL.md 1.0 KB
- references/gmx_Gyrate.md 544 B
- references/gmx_Hbond.md 958 B
- references/gmx_Mdmat.md 606 B
- references/gmx_PCA.md 1005 B
- references/gmx_RMSD.md 1.0 KB
- references/gmx_RMSF.md 538 B
- references/gmx_SASA.md 536 B
- references/Gyrate.md 553 B
- references/Hbond.md 2.2 KB
- references/Hydrophobic_Contact.md 613 B
- references/MSM.md 2.4 KB
- references/PCA.md 692 B
- references/PiCation.md 816 B
- references/PiStacking.md 1.3 KB
- references/RDCM.md 2.7 KB
- references/RDF.md 563 B
- references/RMSD.md 968 B
- references/RMSF.md 578 B
- references/SaltBridge.md 1.1 KB
- references/SPM.md 406 B
- references/tICA.md 1.3 KB
- references/tSNE.md 545 B
- references/UMAP.md 733 B
- references/User_Mod.md 306 B
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.
- 2mo ago First seen · 287 lines · 261 tokens per session scan A 8edd036c38ee
DuIvyProcedures-skills is a skill published in the GitHub repository CharlesHahn/DuIvySkills (22 stars, last pushed 2mo ago), licensed GPL-3.0. It adds 261 tokens to every session and 3,436 once invoked, about $0.0010 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.
DuIvyProcedures-skills compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| DuIvyProcedures-skillsCharlesHahn/DuIvySkills | Skill | 22 | 2mo ago | GPL-3.0 | A | 261 | Claude Code, Codex |
| instrument-data-to-allotropeanthropics/knowledge-work-plugins | Skill | 35k | 2d ago | Apache-2.0 | A | 123 | Claude Code |
| exploratory-data-analysisK-Dense-AI/scientific-agent-skills | Skill | 56k | 4d ago | MIT | A | 83 | Claude Code |
| matlabK-Dense-AI/scientific-agent-skills | Skill | 56k | 4d ago | MIT | A | 44 | Claude Code |
| phylogeneticsK-Dense-AI/scientific-agent-skills | Skill | 56k | 4d ago | MIT | A | 71 | Claude Code, Codex |
| research-engineerdavila7/claude-code-templates | Skill | 33k | yesterday | MIT | A | 43 | Claude Code, Codex |
| mapping-to-snomedmaziyarpanahi/openmed | Skill | 5.8k | yesterday | Apache-2.0 | A | 205 | Claude Code |