Borrowing it
Nothing to install: this file belongs to rios0rios0/guide. 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/rios0rios0/guide/main/CLAUDE.mdgit clone --depth 1 https://github.com/rios0rios0/guideWrote 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/rios0rios0/guide/claude-md)<a href="https://agentmods.dev/instructions/rios0rios0/guide/claude-md"><img src="https://agentmods.dev/badge/instructions/rios0rios0/guide/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/rios0rios0/guide/claude-md"><img src="https://agentmods.dev/badge/instructions/rios0rios0/guide/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 | $0.01759 | $0.01759 |
| Opus 5.5 | $0.00704 | $0.00704 |
| Sonnet 5.5 | $0.00352 | $0.00352 |
| Haiku 4.5 | $0.00176 | $0.00176 |
Grade A, and why
guide 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 — 130 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
A documentation repository that serves as the single source of truth for software engineering standards. It contains 80+ Markdown files organized hierarchically and includes two Go-based automation tools that transform this documentation into GitHub Wiki pages and AI assistant rule files (for Claude Code, Cursor, Codex, and GitHub Copilot).
Build, Test, and Validate
There is no Makefile. The two Go tools are built and tested independently:
# update-wiki tool (Go 1.26.2) — syncs docs to GitHub Wiki
cd .github/workflows/update-wiki
go build -o update-wiki ./...
go test ./...
# generate-ai-rules tool (Go 1.26.2) — generates AI rule files from docs
cd .github/workflows/generate-ai-rules
go build -o generate-ai-rules ./...
go test ./...
# TOC sync validation (run from repo root)
bash .github/workflows/sync-docs/check-toc-sync.sh
Build times are ~1 second each. Set timeouts to 60+ seconds for safety.
Architecture
Documentation Flow
Markdown files (source of truth)
├─→ update-wiki tool ─→ GitHub Wiki (flattened links, absolute image URLs)
├─→ generate-ai-rules tool ─→ 'generated' branch (claude/, cursor/, codex/, copilot/)
│ ├── Claude Code, Cursor, Codex, GitHub Copilot rule files
│ ├── Static assets (agents, commands, skills, hooks) ─→ copied to 'generated' branch
│ └── aisync-source.yaml ─→ source definition for aisync users
├─→ .claude-plugin/marketplace.json ─→ Claude Code plugin marketplace
└─→ aisync (external tool) ─→ downloads from 'generated' branch to ~/.claude/, ~/.cursor/, etc.
The generated rule directories (claude/, cursor/, codex/, copilot/) do not exist on main. They live only on the generated branch, which is updated automatically by the generate-ai-rules.yaml workflow.
Go Tools
update-wiki(.github/workflows/update-wiki/main.go): Converts relative markdown links to Wiki-flat format (preserving any#anchorfragment) and resolves image paths to GitHub raw content URLs.generate-ai-rules(.github/workflows/generate-ai-rules/): Parses documentation, extracts sections, and formats them into AI-assistant-specific rule files. Has separateconfig.go,parser.go, andformatter.gomodules with corresponding tests.
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 Changed · +10 tokens per session 4f7708aba93b
- 1mo ago Changed · +2 lines · +48 tokens per session 5c23d8c8564a
- 1mo ago Changed · +39 tokens per session ff2ac6758c13
- 1mo ago First seen · 128 lines · 1,662 tokens per session scan A 5bbc46bbf18e
guide CLAUDE.md is an instructions file published in the GitHub repository rios0rios0/guide (4 stars, last pushed 6d ago), licensed MIT. It adds 1,759 tokens to every session, about $0.0070 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).
deno copilot-instructions.md
Copilot instructions for denoland/deno, covering deno development guide for github copilot, network access, high level overview, key directories and key files to understand first.