openmc: Skill for Claude Code

.claude/skills/reviewing-openmc-code/SKILL.md

reviewing-openmc-code is a skill for Claude Code, Codex from openmc-dev/openmc. It costs 62 tokens per session (1,271 once invoked), scanned A, original, no licence file.

A code-review skill for checking OpenMC changes against rules for correctness, tests, physics, style, design, performance, documentation, and dependencies.

In plain words
What is it for?
Use it when reviewing an OpenMC pull request, branch, patch, or other code changes.
Why use it?
It gives reviews a defined checklist instead of checking only whether the code appears to work.

Skill for Claude CodeCodex

Written for Claude Code and Codex: installed under .claude/, but also agents/openai.yaml present.

This is openmc-dev/openmc's own configuration. It tells Claude Code and Codex how to work on openmc itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything openmc configures →

Reuse

Borrowing it

Nothing to install: this file belongs to openmc-dev/openmc. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/openmc-dev/openmc/develop/.claude/skills/reviewing-openmc-code/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/openmc-dev/openmc

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for reviewing-openmc-code

README.md
[![agentmods](https://agentmods.dev/badge/skills/openmc-dev/openmc/reviewing-openmc-code/github.svg)](https://agentmods.dev/skills/openmc-dev/openmc/reviewing-openmc-code)
Your own site
<a href="https://agentmods.dev/skills/openmc-dev/openmc/reviewing-openmc-code"><img src="https://agentmods.dev/badge/skills/openmc-dev/openmc/reviewing-openmc-code/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.

agentmods 80×15 button for reviewing-openmc-code

Your own site · 80×15
<a href="https://agentmods.dev/skills/openmc-dev/openmc/reviewing-openmc-code"><img src="https://agentmods.dev/badge/skills/openmc-dev/openmc/reviewing-openmc-code.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 62 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,271 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00062 $0.01271
Opus 5.5 $0.00025 $0.00508
Sonnet 5.5 $0.00012 $0.00254
Haiku 4.5 $0.00006 $0.00127

Measured 5d ago against content hash 0721a2234ea7, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

reviewing-openmc-code 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 5d 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.

.claude/skills/reviewing-openmc-code/SKILL.md · 86 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

Files

What ships with it

1 file 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.

Changes

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.

  1. 5d ago First seen · 86 lines · 62 tokens per session scan A 0721a2234ea7

Subscribe to this mod's changes

reviewing-openmc-code is a skill published in the GitHub repository openmc-dev/openmc (1,134 stars, last pushed 4d ago), with no licence file. It adds 62 tokens to every session and 1,271 once invoked, about $0.0002 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 2026-11-01.

Related

reviewing-openmc-code compared with skills from other repositories

reviewing-openmc-code next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
reviewing-openmc-codeopenmc-dev/openmcSkill1.1k4d agononeA62Claude Code, Codex
autoreviewopenclaw/clawhubSkill9.5kyesterdayMITA17Claude Code, Codex
agent-teams-simplify-and-hardenLeoYeAI/openclaw-master-skillsSkill2.2k5d agoMITA115Claude Code, Codex
revdiff-planumputun/revdiffSkill945yesterdayMITA84Claude Code
explore-unknownsdzhng/skillsSkill1.4k2d agoMITA162Claude Code, Codex
re0-mergeLilMGenius/paperthinSkill1.4k4d agoMITA70Claude Code
asplos-writing-stylebrycewang-stanford/Awesome-Journal-SkillsSkill1.4k1mo agoMITA65Claude Code