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skills: Instructions file for Claude Code

CLAUDE.md

skills CLAUDE.md is an instructions file for Claude Code from JuliusBrussee/skills. It costs 358 tokens per session, scanned A, original, MIT.

Repository instructions for a collection of eight installable agent skills, including rules for their files, descriptions, references, and quality checks.

In plain words
What is it for?
Adding or updating skills, checking required metadata, preserving the project's writing and design priorities, and running its validation scripts.
Why use it?
They explain how to edit the skill collection consistently and how to verify changes before committing them.

Instructions file for Claude Code

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

This is JuliusBrussee/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 175repo +5 3mo ago A scan 358 tokens original MIT
View source ↗ JuliusBrussee/skills
Reuse

Borrowing it

Nothing to install: this file belongs to JuliusBrussee/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/JuliusBrussee/skills/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/JuliusBrussee/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
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Your own site
<a href="https://agentmods.dev/instructions/juliusbrussee/skills/claude-md"><img src="https://agentmods.dev/badge/instructions/juliusbrussee/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.

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Your own site · 80×15
<a href="https://agentmods.dev/instructions/juliusbrussee/skills/claude-md"><img src="https://agentmods.dev/badge/instructions/juliusbrussee/skills/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 358 This file is loaded in full into every session.
When invoked 358 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original 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 $0.00358 $0.00358
Opus 5.5 $0.00143 $0.00143
Sonnet 5.5 $0.00072 $0.00072
Haiku 4.5 $0.00036 $0.00036

Measured 2mo ago against content hash ef29e3cbda34, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

skills CLAUDE.md 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.

CLAUDE.md · 52 lines

What it actually says

Repository Instructions

Purpose

This repo publishes eight Julius Brussee agent skills for now: caveman, interface-kit, grill-me, loop-factory, junior-to-senior, deslopify, context-canary, and last-20-percent. Treat it as an installable skill collection, not a product website.

Editing Rules

  • Keep skill files in skills/<skill-name>/SKILL.md.
  • Every skill needs YAML frontmatter with name and description.
  • Keep descriptions action-oriented. They should say when the skill triggers and what workflow it provides.
  • Use progressive disclosure. Put long references in references/ and link them from SKILL.md.
  • Do not add generated build artifacts.
  • Do not vendor third-party plugin caches.

Voice

Repo copy may be concise, but skill bodies should stay clear enough for agents to follow. Caveman branding belongs in Caveman skills and public-facing README sections, not every skill.

Quality Bar

Before committing:

node scripts/verify-skills.mjs
node scripts/list-skills.mjs

For interface-kit changes, preserve priorities:

  • accessibility
  • performance
  • typography
  • layout and spatial design
  • color semantics
  • motion and interaction
  • polish

Agent Skills

Issue Tracker

Issues live in GitHub Issues for JuliusBrussee/skills once repo is published.

Triage Labels

Default labels: needs-triage, needs-info, ready-for-agent, ready-for-human, wontfix.

Domain Docs

Single-context repo. Use CONTEXT.md and docs/adr/.

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. 2mo ago First seen · 52 lines · 358 tokens per session scan A ef29e3cbda34

Subscribe to this mod's changes

skills CLAUDE.md is an instructions file published in the GitHub repository JuliusBrussee/skills (175 stars, last pushed 3mo ago), licensed MIT. It adds 358 tokens to every session, about $0.0014 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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