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skills: Instructions file for Claude Code

CLAUDE.md

skills CLAUDE.md is an instructions file for Claude Code from ivuorinen/skills. It costs 2,651 tokens per session, scanned B, original, no licence file.

Repository instructions for a skills project, covering its Claude Code guidance, project purpose, development commands, and compliance with the agent-skills specification.

In plain words
What is it for?
Understanding this skills repository, running its development commands, and creating or reviewing compliant agent skills.
Why use it?
They explain how the repository is organised and what its skills must comply with, reducing guesswork during development.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md.

This is ivuorinen/skills's own configuration. It tells Claude Code how to work on skills 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 skills configures →

not rated 4repo changed 10d ago B scan 2,651 tokens custom licence
View source ↗ ivuorinen/skills
Reuse

Borrowing it

Nothing to install: this file belongs to ivuorinen/skills. 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/ivuorinen/skills/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/ivuorinen/skills

Made for: Claude Code.

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 skills CLAUDE.md

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

Your own site · 80×15
<a href="https://agentmods.dev/instructions/ivuorinen/skills/claude-md"><img src="https://agentmods.dev/badge/instructions/ivuorinen/skills/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 2,651 This file is loaded in full into every session.
When invoked 2,651 The same file — it is already loaded in full.
Security scan B 1 finding. 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 $0.02651 $0.02651
Opus 5.5 $0.01060 $0.01060
Sonnet 5.5 $0.00530 $0.00530
Haiku 4.5 $0.00265 $0.00265

Measured 10d ago against content hash 32e55c40400e, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade B, and why

skills CLAUDE.md scanned grade B with 1 finding 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 10d 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.

Reads agent configuration directoriesmediumAgent snooping

.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.

`grep -L '^paths:' .claude/rules/*.md` lists the second kind; file a new rule
CLAUDE.md · 181 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

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. 10d ago Changed · +19 tokens per session 32e55c40400e
  2. 1mo ago Changed · -144 lines · -1,907 tokens per session scan A → B ce33bb666598
  3. 1mo ago Changed · -115 lines · -1,900 tokens per session 261567dc2c7d
  4. 1mo ago Changed · +11 lines · +191 tokens per session 04b40bee9b93
  5. 1mo ago Changed · -71 lines · -912 tokens per session 2dd9fd2ba169
  6. 1mo ago Changed · +19 lines · +280 tokens per session 9b53df2698cd
  7. 1mo ago Changed · +123 lines · +1,320 tokens per session cc4ec63f473b
  8. 2mo ago Changed · +22 lines · +406 tokens per session ae37ac49c069
  9. 2mo ago Changed · +4 lines · +62 tokens per session 182f1a455123
  10. 2mo ago First seen · 332 lines · 5,092 tokens per session scan A deb589052635

Subscribe to this mod's changes

skills CLAUDE.md is an instructions file published in the GitHub repository ivuorinen/skills (4 stars, last pushed yesterday), with no licence file. It adds 2,651 tokens to every session, about $0.0106 per session on Opus 5.5. A static security scan graded it B with 1 finding (reads agent configuration directories). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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