Borrowing it
Nothing to install: this file belongs to liqiongyu/lenny_skills_plus. 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/liqiongyu/lenny_skills_plus/main/CLAUDE.mdgit clone --depth 1 https://github.com/liqiongyu/lenny_skills_plusWrote 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/liqiongyu/lenny_skills_plus/claude-md)<a href="https://agentmods.dev/instructions/liqiongyu/lenny_skills_plus/claude-md"><img src="https://agentmods.dev/badge/instructions/liqiongyu/lenny_skills_plus/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/liqiongyu/lenny_skills_plus/claude-md"><img src="https://agentmods.dev/badge/instructions/liqiongyu/lenny_skills_plus/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 | $0.01233 | $0.01233 |
| Opus 5 | $0.00616 | $0.00616 |
| Sonnet 5 | $0.00247 | $0.00247 |
| Haiku 4.5 | $0.00123 | $0.00123 |
Grade A, and why
lenny_skills_plus 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 11d 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.
How it starts
The opening of the file, as written. The whole thing — 83 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
Project Overview
A curated library of 87 agent-executable skill packs (skills/) converted from RefoundAI's "Lenny skills," plus the tooling to produce more. Skills are portable across OpenAI Codex and Claude Code. All generated skill pack content must be in English.
Common Commands
# Lint a single skill pack
python3 skills/lenny-skillpack-creator/scripts/lint_skillpack.py skills/<skill-slug>
# Lint all skill packs (CI-style, skip mirror check for local dev)
python3 scripts/ci_check_skillpacks.py --skip-mirror-check
# Mirror canonical skills to .codex/ and .claude/ for local auto-discovery
python3 scripts/mirror_skills.py --overwrite
# Check bilingual doc pairing (EN + zh-CN)
python3 scripts/check_bilingual_docs.py
# Python syntax validation
python -m compileall scripts skills
# Scaffold a new skill pack
python3 skills/lenny-skillpack-creator/scripts/init_skillpack.py skills/<skill-slug>
# Regenerate skills catalog / audit report
python3 scripts/generate_skills_catalog.py
python3 scripts/generate_audit_report.py
Architecture
Directory Layout
skills/<skill-slug>/— Canonical skill packs (tracked in git). Each containsSKILL.md,skillpack.json,README.md, andreferences/with 7 standard files (INTAKE, WORKFLOW, TEMPLATES, CHECKLISTS, RUBRIC, SOURCE_SUMMARY, EXAMPLES)..codex/skills/,.claude/skills/— Generated mirrors for tool auto-discovery (git-ignored). Regenerate withmirror_skills.py.scripts/— Python utilities for CI validation, mirroring, doc generation, and normalization.skills/lenny-skillpack-creator/— The meta-skill that converts Refound sources into skill packs. Also contains the linter and scaffolding scripts under itsscripts/subdirectory.sources/refound/— Upstream manifest;raw/subdirectory for downloaded sources (git-ignored).docs/— Bilingual documentation (EN +*.zh-CN.md).
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.
- 11d ago First seen · 83 lines · 1,233 tokens per session scan A c267c8c8274b
lenny_skills_plus CLAUDE.md is an instructions file published in the GitHub repository liqiongyu/lenny_skills_plus (52 stars, last pushed 3mo ago), licensed Apache-2.0. It adds 1,233 tokens to every session, about $0.0062 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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