agentmods.dev

claude-md

claude-md is a skill for Claude Code from eitelcj/Claude-Weekend. It costs 20 tokens per session (1,489 once invoked), scanned A, original, MIT.

A guide for creating, improving, or reviewing CLAUDE.md files, which give an AI coding agent instructions about a codebase.

In plain words
What is it for?
Use it to create project-wide or directory-specific instructions, improve an existing file, or check its quality.
Why use it?
It helps keep the agent’s standing instructions focused, useful, and relevant across coding sessions.

Skill for Claude Code

Written for Claude Code: $ARGUMENTS substitution. Also seen: reads .claude/ paths; mentions CLAUDE.md; mentions Claude Code.

not rated 2repo 6mo ago A scan 20 tokens original MIT

Good fit Use it to create project-wide or directory-specific instructions, improve an existing file, or check its quality.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/eitelcj/claude-weekend/claude-md
View source ↗ eitelcj/Claude-Weekend
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 eitelcj/Claude-Weekend --skill claude-md
Clone the repo
git clone --depth 1 https://github.com/eitelcj/Claude-Weekend

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/eitelcj/claude-weekend/claude-md/github.svg)](https://agentmods.dev/skills/eitelcj/claude-weekend/claude-md)
Your own site
<a href="https://agentmods.dev/skills/eitelcj/claude-weekend/claude-md"><img src="https://agentmods.dev/badge/skills/eitelcj/claude-weekend/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.

agentmods 80×15 button for claude-md

Your own site · 80×15
<a href="https://agentmods.dev/skills/eitelcj/claude-weekend/claude-md"><img src="https://agentmods.dev/badge/skills/eitelcj/claude-weekend/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 20 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,489 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 $0.00020 $0.01489
Opus 5.5 $0.00008 $0.00596
Sonnet 5.5 $0.00004 $0.00298
Haiku 4.5 $0.00002 $0.00149

Measured 2mo ago against content hash 9638d1fc2607, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, 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 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.

03-skills/claude-md/SKILL.md · 213 lines

How it starts

The opening of the file, as written. The whole thing — 213 lines — stays where its author put it; the contents beside it link to each section on GitHub.

User Input

$ARGUMENTS

You MUST consider the user input before proceeding (if not empty). User may specify:

  • create - Create new CLAUDE.md from scratch
  • update - Improve existing CLAUDE.md
  • audit - Analyze and report on current CLAUDE.md quality
  • A specific path to create/update (e.g., src/api/CLAUDE.md for directory-specific instructions)

Core Principles

LLMs are stateless: CLAUDE.md is the only file automatically included in every conversation. It serves as the primary onboarding document for AI agents into your codebase.

The Golden Rules

  1. Less is More: Frontier LLMs can follow ~150-200 instructions. Claude Code's system prompt already uses ~50. Keep your CLAUDE.md focused and concise.

  2. Universal Applicability: Only include information relevant to EVERY session. Task-specific instructions belong in separate files.

  3. Don't Use Claude as a Linter: Style guidelines bloat context and degrade instruction-following. Use deterministic tools (prettier, eslint, etc.) instead.

  4. Never Auto-Generate: CLAUDE.md is the highest leverage point of the AI harness. Craft it manually with careful consideration.

Execution Flow

1. Project Analysis

First, analyze the current project state:

  1. Check for existing CLAUDE.md files:

    • Root level: ./CLAUDE.md or .claude/CLAUDE.md
    • Directory-specific: **/CLAUDE.md
    • Global user config: ~/.claude/CLAUDE.md

  2. Identify the project structure:

    • Technology stack (languages, frameworks)
    • Project type (monorepo, single app, library)
    • Development tools (package manager, build system, test runner)

  3. Review existing documentation:

    • README.md
    • CONTRIBUTING.md
    • package.json, pyproject.toml, Cargo.toml, etc.

2. Content Strategy (WHAT, WHY, HOW)

Structure CLAUDE.md around three dimensions:

WHAT - Technology & Structure
  • Technology stack overview
  • Project organization (especially important for monorepos)
  • Key directories and their purposes

Read the full file on GitHub · 213 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.

  1. 2mo ago First seen · 213 lines · 20 tokens per session scan A 9638d1fc2607

Subscribe to this mod's changes

claude-md is a skill published in the GitHub repository eitelcj/Claude-Weekend (2 stars, last pushed 6mo ago), licensed MIT. It adds 20 tokens to every session and 1,489 once invoked, about $0.0001 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.

Building agents
Related

claude-md compared with skills from other repositories

claude-md next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
claude-mdeitelcj/Claude-WeekendSkill26mo agoMITA20Claude Code
imagegenopenai/codexSkill134ktodayApache-2.0A113Codex
local-ai-agentsmicrosoft/ai-agents-for-beginnersSkill79ktodayMITA200Claude Code, Codex
playwright-climicrosoft/playwrightSkill99ktodayApache-2.0A19Claude Code
systematic-debuggingobra/superpowersSkill314k3d agoMITA21Claude Code
next-cache-components-adoptionvercel/next.jsSkill143ktodayMITA95Claude Code
chat-pet-sprite-creationmicrosoft/vscodeSkill195ktodayMITA53Claude Code, Codex