What is ibook-skill CLAUDE.md?

Repository instructions for a collection of independent AI-agent skills, which are Markdown files that define specialized workflows and behavior. They describe the repository structure and conventions for adding or editing skills.

Use them when working on this skill collection, especially when creating, updating, or running executable code associated with a skill.

They give an agent the project context and rules needed to modify the right files without treating the repository like a conventional application.

How Ibook000/ibook-skill configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to Ibook000/ibook-skill. 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/Ibook000/ibook-skill/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/Ibook000/ibook-skill

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/ibook000/ibook-skill/claude-md/github.svg)](https://agentmods.dev/instructions/ibook000/ibook-skill/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/ibook000/ibook-skill/claude-md"><img src="https://agentmods.dev/badge/instructions/ibook000/ibook-skill/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/ibook000/ibook-skill/claude-md"><img src="https://agentmods.dev/badge/instructions/ibook000/ibook-skill/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 1,317 This file is loaded in full into every session.

When invoked 1,317 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	$0.01317	$0.01317
Opus 5.5	$0.00527	$0.00527
Sonnet 5.5	$0.00263	$0.00263
Haiku 4.5	$0.00132	$0.00132

Measured 2mo ago against content hash 26584c12c01d, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

ibook-skill 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 · 107 lines

How it starts

The opening of the file, as written. The whole thing — 107 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.

What This Repository Is

A skill registry — a collection of independent, self-contained AI agent skills for Claude Code, OpenClaw, and Codex. Each skill is a markdown-based persona/workflow definition that causes an AI agent to adopt specific behavioral patterns. This is not a traditional software project; the primary artifacts are .md files, not code.

Skills

Skill	Location	Domain
`ibook-builder`	`SKILL.md` (root)	Engineering builder persona — system-building, closed-loop delivery
`jiaoyiyuan-tony`	`skills/jiaoyiyuan-tony/SKILL.md`	Trading discipline, risk control, position sizing
`tweet-card-generator`	`skills/tweet-card-generator/SKILL.md`	Twitter data card generation with 12 chart types
`ssh-skill`	`skills/ssh-skill/SKILL.md`	High-performance SSH operations with persistent connections and batch concurrency
`ioc-edit`	`skills/ioc-edit/SKILL.md`	STM32CubeMX .ioc file editing (pins, peripherals, clocks, interrupts)
`image-well`	`skills/image-well/SKILL.md`	Parallel image search across 12 APIs (4 no-key sources)
`chart-visualization`	`skills/chart-visualization/SKILL.md`	Data visualization with 26 chart types
`notion-skill`	`skills/notion-skill/SKILL.md`	Notion workspace operations
`xiaohongshu-finance`	`skills/xiaohongshu-finance/SKILL.md`	Xiaohongshu financial content generation with banned-word avoidance

Skill Anatomy (Convention for Adding/Editing Skills)

Every skill follows this structure:

SKILL.md — Core definition. YAML frontmatter (name, description), activation rules, behavioral protocols, output contracts, anti-patterns. This is what gets loaded into an AI agent's context.
README.md — Human-readable docs: what it does, installation, usage examples.
references/ (optional) — Domain knowledge loaded at generation time (e.g., banned-word lists, reference guides).
templates/ (optional) — Reusable assets (HTML templates, shell scripts).
examples/ (optional) — Example configurations demonstrating usage.

Read the full file on GitHub · 107 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 · 107 lines · 1,317 tokens per session scan A 26584c12c01d

Subscribe to this mod's changes

ibook-skill CLAUDE.md is an instructions file published in the GitHub repository Ibook000/ibook-skill (7 stars, last pushed 2mo ago), licensed MIT. It adds 1,317 tokens to every session, about $0.0053 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 2026-08-31.

ai-agent automation embedded skills workflow

ibook-skill CLAUDE.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
ibook-skill CLAUDE.mdIbook000/ibook-skill	Instructions file	7	2mo ago	MIT	A	1,317	Claude Code
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	9,719	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	yesterday	MIT	A	7,461	Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	yesterday	MIT	A	4,680	Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	5,516	GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	3,093	GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness	Instructions file	274k	2d ago	MIT	A	4,313	Codex, OpenCode

ibook-skill: Instructions file for Claude Code