Borrowing it
Nothing to install: this file belongs to robertguss/claude-code-toolkit. 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/robertguss/claude-code-toolkit/main/CLAUDE.mdgit clone --depth 1 https://github.com/robertguss/claude-code-toolkitWrote 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/robertguss/claude-code-toolkit/claude-md)<a href="https://agentmods.dev/instructions/robertguss/claude-code-toolkit/claude-md"><img src="https://agentmods.dev/badge/instructions/robertguss/claude-code-toolkit/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/robertguss/claude-code-toolkit/claude-md"><img src="https://agentmods.dev/badge/instructions/robertguss/claude-code-toolkit/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 | $0.00617 | $0.00617 |
| Opus 5.5 | $0.00247 | $0.00247 |
| Sonnet 5.5 | $0.00123 | $0.00123 |
| Haiku 4.5 | $0.00062 | $0.00062 |
Grade A, and why
claude-code-toolkit 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 1mo 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 — 84 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
This repository contains custom Claude skills—modular packages that extend Claude's capabilities with specialized workflows and domain knowledge. Skills are used with both Claude Code (CLI) and Claude.ai (web/mobile/desktop).
Build Commands
# Package a single skill for Claude.ai upload
python build.py <skill-name>
# Package all skills
python build.py --all
# List available skills with validation status
python build.py --list
Output: .skill files in dist/ (ZIP archives with skill contents)
Architecture
Skill Structure
Each skill is a top-level folder containing:
<skill-name>/
├── SKILL.md # Required: instructions + YAML frontmatter
├── references/ # Optional: documentation loaded on-demand
└── assets/ # Optional: templates, examples
SKILL.md Requirements
Must start with YAML frontmatter:
name(required): skill identifierdescription(required, min 20 chars): determines when the skill activates
Build System
build.py validates skills and packages them as ZIP archives:
- Validates YAML frontmatter presence and required fields
- Excludes hidden files,
.DS_Store,__pycache__ - Creates
<skill-name>.skillindist/
Requires: pyyaml (for frontmatter parsing)
Usage Modes
Claude Code: Reference skills directly via filesystem paths in project
CLAUDE.md or global ~/.claude/CLAUDE.md
Claude.ai: Upload packaged .skill files via Settings → Skills
Templates
The templates/ directory contains document templates and guides for
configuring Claude Code:
| Document | Purpose |
|---|---|
| CLAUDE-MD-template.md | Project or global instructions for Claude |
| HUMAN-MD-template.md | Relationship document — helps Claude know who you are |
| SKILL-MD-template.md | Create custom skills (slash commands) |
| SESSION-HANDOFF-template.md | Preserve context when sessions end |
| CORRECTION-template.md | Give Claude structured feedback it can learn from |
| compaction-strategy.md | What to preserve when context is compressed |
| CLAUDE-MD-GUIDE.md | Deep dive into why each CLAUDE.md section matters |
| PROMPT-GUIDE.md | How to write prompts that get better results |
| INTERACTION-PATTERNS.md | How different phrases affect Claude's processing |
| CLAUDE_DNA.md | Understanding who Claude is — values, preferences, limitations |
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.
- 1mo ago First seen · 84 lines · 617 tokens per session scan A cdbb889043a5
claude-code-toolkit CLAUDE.md is an instructions file published in the GitHub repository robertguss/claude-code-toolkit (126 stars, last pushed 1mo ago), licensed MIT. It adds 617 tokens to every session, about $0.0025 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.
Other instructions, from other repositories
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
deepseek-harness AGENTS.md
AGENTS.md instructions for deepseek-ai/deepseek-harness, covering agents.md, pre-stable apis and released session data, repository layout, commands and host sandbox failures.