claude-md

claude-md is a skill for Claude Code from leihuang830102-hash/Opencode-Howto. It costs 43 tokens per session (377 once invoked), scanned A, original, MIT.

A guide for creating, updating, or reviewing CLAUDE.md, a project instruction file that Claude Code reads to understand a codebase.

In plain words
What is it for?
Use it to document the project structure, technology choices, working commands, conventions, and known issues, or to audit an existing CLAUDE.md.
Why use it?
It keeps important project context in one short, maintained place so the coding agent can work with fewer misunderstandings.

Skill for Claude Code

Written for Claude Code: $ARGUMENTS substitution. Also seen: mentions CLAUDE.md; mentions Claude Code.

Good fit Use it to document the project structure, technology choices, working commands, conventions, and known issues, or to audit an existing CLAUDE.md.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/leihuang830102-hash/opencode-howto/claude-md
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add leihuang830102-hash/Opencode-Howto --skill claude-md
Clone the repo
git clone --depth 1 https://github.com/leihuang830102-hash/Opencode-Howto

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.

agentmods badge for claude-md

README.md
[![agentmods](https://agentmods.dev/badge/skills/leihuang830102-hash/opencode-howto/claude-md.svg)](https://agentmods.dev/skills/leihuang830102-hash/opencode-howto/claude-md)
Your own site
<a href="https://agentmods.dev/skills/leihuang830102-hash/opencode-howto/claude-md"><img src="https://agentmods.dev/badge/skills/leihuang830102-hash/opencode-howto/claude-md.svg" alt="Measured on agentmods" height="20"></a>
Per session 43 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 377 The whole file, excluding the scripts and references it only reads on demand.
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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00043 $0.00377
Opus 5 $0.00022 $0.00188
Sonnet 5 $0.00009 $0.00075
Haiku 4.5 $0.00004 $0.00038

Measured 7d ago against content hash 6657353e9f15, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

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 7d 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-howto-zh-cn-main/03-skills/claude-md/SKILL.md · 66 lines

What it actually says

CLAUDE.md / 项目记忆整理

User Input

$ARGUMENTS

支持的意图:

  • create
  • update
  • audit
  • 指定某个路径下的 CLAUDE.md

Core Principles

  • CLAUDE.md 是 Claude Code 自动加载的长期项目上下文
  • 内容要短、准、长期有效
  • 不要把 lint / format 规则硬塞进去
  • 不要把一次性任务说明塞进去
  • 不要自动生成一堆无价值内容

推荐结构

  • Project Overview
  • Tech Stack
  • Project Structure
  • Development Commands
  • Critical Conventions
  • Known Issues / Gotchas

Execution Flow

create

  1. 分析项目结构和技术栈
  2. 草拟 CLAUDE.md
  3. 给用户审阅
  4. 确认后写入

update

  1. 读取现有 CLAUDE.md
  2. 找出冗余、过时或不该存在的内容
  3. 给出优化建议
  4. 审阅后更新

audit

  1. 检查行数和结构
  2. 识别 anti-patterns
  3. 输出报告,不直接改文件

Quality Constraints

  • 目标尽量少于 300 行
  • 面向所有会话都适用
  • 尽量用文件引用替代长代码块
  • 命令必须真实可用
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.

  1. 7d ago First seen · 66 lines · 43 tokens per session scan A 6657353e9f15

Subscribe to this mod's changes

claude-md is a skill published in the GitHub repository leihuang830102-hash/Opencode-Howto (5 stars, last pushed 4mo ago), licensed MIT. It adds 43 tokens to every session and 377 once invoked, about $0.0002 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 2026-08-31.

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