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.
curl -O https://raw.githubusercontent.com/JuliusBrussee/skills/main/CLAUDE.mdgit clone --depth 1 https://github.com/JuliusBrussee/skillsWrote 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/instructions/juliusbrussee/skills/claude-md)<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.
<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>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 | $0.00358 | $0.00358 |
| Opus 5 | $0.00179 | $0.00179 |
| Sonnet 5 | $0.00072 | $0.00072 |
| Haiku 4.5 | $0.00036 | $0.00036 |
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 9d 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.
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
nameanddescription. - 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 fromSKILL.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/.
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.
- 9d ago First seen · 52 lines · 358 tokens per session scan A ef29e3cbda34
skills CLAUDE.md is an instructions file published in the GitHub repository JuliusBrussee/skills (160 stars, last pushed 1mo ago), licensed MIT. It adds 358 tokens to every session, about $0.0018 per session on Opus 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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