What is skills CLAUDE.md?

A catalogue and operating guide for reusable agent skills in a repository. It explains the skill folder structure, required metadata, validation commands, packaging commands, and project limitations.

Use it when inspecting, validating, packaging, installing, or creating skills in the catalogue.

It gives agents a reliable map of the repository and prevents them from inventing unavailable tools or commands.

How luongnv89/skills configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to luongnv89/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/luongnv89/skills/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/luongnv89/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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/luongnv89/skills/claude-md.svg)](https://agentmods.dev/instructions/luongnv89/skills/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/luongnv89/skills/claude-md"><img src="https://agentmods.dev/badge/instructions/luongnv89/skills/claude-md.svg" alt="Measured on agentmods" height="20"></a>

Per session 1,133 This file is loaded in full into every session.

When invoked 1,133 The same file — it is already loaded in full.

Security scan C 1 finding. Scan, not verified.

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.

Model	Per session	Once invoked
Fable 5.1	$0.01133	$0.01133
Opus 5	$0.00566	$0.00566
Sonnet 5	$0.00227	$0.00227
Haiku 4.5	$0.00113	$0.00113

Measured 6d ago against content hash 21faf0b0dad1, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade C, and why

skills CLAUDE.md scanned grade C 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 6d 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.

Recursive force deletehighDestructive command

rm -rf with a variable or a broad path is one typo away from removing the wrong tree.

- Ask before destructive ops (`rm -rf`, `git reset --hard`, force-push, branch delete).

CLAUDE.md · 68 lines

How it starts

The opening of the file, as written. The whole thing — 68 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md — Agent Skills Catalog

Project context for Claude when working in this repo. Skill definitions live here; the runtime that loads them lives in ~/.claude/skills/ (out of scope for edits).

Critical commands

Validate a skill: python3 ~/.claude/skills/skill-creator/scripts/quick_validate.py skills/<skill-name>
Package a skill: python3 ~/.claude/skills/skill-creator/scripts/package_skill.py skills/<skill-name>
Scaffold a new skill: python3 ~/.claude/skills/skill-creator/scripts/init_skill.py <name> --path skills/
Local install dry-run: bash install.sh (interactive TUI; never pipe to non-tty without flags)

There is no npm, pnpm, make, or pytest in this repo. Don't invent test commands.

Architecture map

skills/<name>/SKILL.md — required skill definition with YAML frontmatter (name, description, metadata.version, metadata.author).
skills/<name>/references/ — on-demand docs the agent loads when the skill triggers.
skills/<name>/scripts/ — executable helpers shipped with the skill.
skills/<name>/agents/ — subagent prompts.
skills/<name>/docs/README.md — human-only catalog page; must start with the AI-skip HTML comment.
install.sh / remote-install.sh — end-user installers (bash, no deps).
dist/ — generated .skill bundles. Never edit by hand.
*-workspace/ — scratch dirs for individual skills. Never commit working files there.
Root *.md files (CHANGELOG, CONTRIBUTING, etc.) — repo-level governance, not skill content.

Hard rules

IMPORTANT: Bump metadata.version (semver) on every SKILL.md edit. No exceptions.
IMPORTANT: Quote any frontmatter string containing : # - < > | , & ? ! to keep YAML valid.
YOU MUST keep each SKILL.md under 500 lines. Split overflow into references/.
YOU MUST start every docs/README.md with the AI-skip HTML comment (see existing skills for the boilerplate).
Never edit anything under ~/.claude/skills/ or ~/.claude/CLAUDE.md from this repo.
Never edit dist/ artifacts; regenerate via package_skill.py instead.
Never commit *-workspace/ contents, .claude/scheduled_tasks.lock, or local scratch files.
Never commit secrets, .env, or anything matching **/credentials*.
NEVER add Co-Authored-By: Claude to any commit message.
Do not commit or push without an explicit user request — drafting the message is fine, executing isn't.
Use Conventional Commits (feat:, fix:, chore:, docs:). Breaking changes go in the body, not the title.
Skill name field must exactly match the parent directory name (lowercase, hyphens, no consecutive hyphens).
Do not rewrite a whole SKILL.md for a one-line change. Use targeted edits.
When a skill mutates a git repo, its SKILL.md must contain a "Repo Sync Before Edits" section.
Run quick_validate.py against any skill you touched before declaring done.

Read the full file on GitHub · 68 lines

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.

6d ago First seen · 68 lines · 1,133 tokens per session scan C 21faf0b0dad1

Subscribe to this mod's changes

skills CLAUDE.md is an instructions file published in the GitHub repository luongnv89/skills (123 stars, last pushed yesterday), licensed MIT. It adds 1,133 tokens to every session, about $0.0057 per session on Opus 5. A static security scan graded it C with 1 finding (recursive force delete). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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skills: Instructions file for Claude Code