What is lenny_skills_plus CLAUDE.md?

Project instructions for a library of 87 reusable coding-agent skill packs and the scripts that maintain them. They list commands for linting skills, running checks, mirroring files, validating Python, and generating reports.

They are for linting individual or all skill packs, creating new packs, checking bilingual documentation, validating code, and rebuilding catalogs.

They provide the exact checks and workflows needed to make safe changes to the skill library.

How liqiongyu/lenny_skills_plus configures Claude Code

Reuse

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.

Copy the file

curl -O https://raw.githubusercontent.com/liqiongyu/lenny_skills_plus/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/liqiongyu/lenny_skills_plus

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/liqiongyu/lenny_skills_plus/claude-md/github.svg)](https://agentmods.dev/instructions/liqiongyu/lenny_skills_plus/claude-md)

Your own site

<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.

Your own site · 80×15

<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>

Per session 1,233 This file is loaded in full into every session.

When invoked 1,233 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.

Model	Per session	Once invoked
Fable 5.1	$0.01233	$0.01233
Opus 5.5	$0.00493	$0.00493
Sonnet 5.5	$0.00247	$0.00247
Haiku 4.5	$0.00123	$0.00123

Measured 2mo ago against content hash c267c8c8274b, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

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 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 · 83 lines

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 contains SKILL.md, skillpack.json, README.md, and references/ 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 with mirror_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 its scripts/ subdirectory.
sources/refound/ — Upstream manifest; raw/ subdirectory for downloaded sources (git-ignored).
docs/ — Bilingual documentation (EN + *.zh-CN.md).

Read the full file on GitHub · 83 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.

2mo ago First seen · 83 lines · 1,233 tokens per session scan A c267c8c8274b

Subscribe to this mod's changes

lenny_skills_plus CLAUDE.md is an instructions file published in the GitHub repository liqiongyu/lenny_skills_plus (53 stars, last pushed 5mo ago), licensed Apache-2.0. It adds 1,233 tokens to every session, about $0.0049 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.

agent-skills ai-agents automation claude codex prompt-engineering

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lenny_skills_plus: Instructions file for Claude Code