Borrowing it
Nothing to install: this file belongs to paulo-yamagishi/claude-code-setup. 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/paulo-yamagishi/claude-code-setup/main/CLAUDE.mdgit clone --depth 1 https://github.com/paulo-yamagishi/claude-code-setupWrote 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/paulo-yamagishi/claude-code-setup/claude-md)<a href="https://agentmods.dev/instructions/paulo-yamagishi/claude-code-setup/claude-md"><img src="https://agentmods.dev/badge/instructions/paulo-yamagishi/claude-code-setup/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/paulo-yamagishi/claude-code-setup/claude-md"><img src="https://agentmods.dev/badge/instructions/paulo-yamagishi/claude-code-setup/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 | $0.00802 | $0.00802 |
| Opus 5.5 | $0.00321 | $0.00321 |
| Sonnet 5.5 | $0.00160 | $0.00160 |
| Haiku 4.5 | $0.00080 | $0.00080 |
Grade A, and why
claude-code-setup 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 — 71 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md — Meta Instructions
This repository's primary artifact is skill/SKILL.md — a /setup skill that audits Claude Code configuration and suggests project-tailored improvements. The core/ directory serves as reference material for maintaining the skill's accuracy. BOOTSTRAP.md explains the /bootstrap skill for greenfield project setup.
Structure
core/— Language-agnostic reference guides (one topic per file)projects/— Language-specific extensions of core guides (Python, TypeScript, Go, Rust)templates/— Copy-paste ready config templates (agents/,skills/,rules/)templates/bootstrap/— Extracted templates used by/bootstrapskillprompts/— Prompt patterns and examplesskill/SKILL.md— The/setupskill (self-contained).claude/skills/bootstrap/— The/bootstrapskill for new projects.claude/skills/evolve/— The/evolveskill for auto-maintenance.claude/rules/— Context-specific rules (auto-loaded by file path)
Architecture
This is a documentation and skills repository — no application code, no build step, no tests. The primary artifacts are Markdown files that serve as Claude Code configuration guides and skills.
Key Files
skill/SKILL.md— The/setupskill (also mirrored at.claude/skills/setup/SKILL.md).claude/skills/bootstrap/SKILL.md— The/bootstrapskill.claude/skills/evolve/SKILL.md— The/evolveskillskill/OUTPUT-FORMAT.md— Output template for/setupreports
Data Flow
/setupaudits → emitssetup-reportblock →/bootstrapconsumes it/evolveauto-maintains config after tasks (via Stop hook)core/guides are reference material for skill accuracy, not user-facing docs
Commands
No build, test, or lint commands — this is a pure Markdown repo. Useful commands:
# Validate docs
/verify-docs
# Audit this project's Claude Code config
/setup
# Apply suggested config
/bootstrap
# Auto-maintain Claude Code config after tasks
/evolve
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 · 71 lines · 802 tokens per session scan A 6c76c24870c1
claude-code-setup CLAUDE.md is an instructions file published in the GitHub repository paulo-yamagishi/claude-code-setup (2 stars, last pushed 8mo ago), licensed MIT. It adds 802 tokens to every session, about $0.0032 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.
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).
vscode model-prompts.instructions.md
Model-specific prompt authoring and registry guidelines.