Borrowing it
Nothing to install: this file belongs to ash1794/vibe-engineering. 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/ash1794/vibe-engineering/master/CLAUDE.mdgit clone --depth 1 https://github.com/ash1794/vibe-engineeringWrote 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/ash1794/vibe-engineering/claude-md)<a href="https://agentmods.dev/instructions/ash1794/vibe-engineering/claude-md"><img src="https://agentmods.dev/badge/instructions/ash1794/vibe-engineering/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/ash1794/vibe-engineering/claude-md"><img src="https://agentmods.dev/badge/instructions/ash1794/vibe-engineering/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 | $0.01057 | $0.01057 |
| Opus 5.5 | $0.00423 | $0.00423 |
| Sonnet 5.5 | $0.00211 | $0.00211 |
| Haiku 4.5 | $0.00106 | $0.00106 |
Grade A, and why
vibe-engineering 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 20d 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 — 70 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
Project notes for Claude Code (and any other AI agent) working in this repo.
What this repo is
A Claude Code marketplace (vibe-plugins) that ships one plugin (vibe-engineering) containing 33 engineering-discipline skills. The same SKILL.md files also power OpenAI Codex and Gemini CLI via .agents/skills/ (the Agent Skills standard path).
vibe-engineering/ # repo root = marketplace root
├── .claude-plugin/
│ └── marketplace.json # marketplace: "vibe-plugins"
├── plugins/
│ └── vibe-engineering/ # plugin root
│ ├── .claude-plugin/plugin.json # plugin: "vibe-engineering"
│ └── skills/ # 33 skills, folder name == `name`
└── .agents/skills -> ../plugins/vibe-engineering/skills # Codex + Gemini CLI
Install flow users follow:
/plugin marketplace add ash1794/vibe-engineering
/plugin install vibe-engineering@vibe-plugins
Plugin structure invariants — DO NOT BREAK THESE
These three rules are non-negotiable. Breaking any one produces either an uninstallable repo or a recursive plugin-cache loop (issue #1). scripts/validate-skills.sh enforces all three in CI — the build will fail if you violate them.
1. .claude-plugin/marketplace.json MUST exist at the repo root
Without it, /plugin marketplace add has nothing to catalog. The repo becomes uninstallable via any supported Claude Code flow. The claude plugin add github:... command advertised in older docs does not exist.
History: commit 50e13ad deleted marketplace.json to work around the recursion bug below. It made the plugin uninstallable for a full release cycle. Don't repeat this.
2. The plugin directory MUST NOT be the repo root
The plugin must live in a subdirectory (we use plugins/vibe-engineering/), not alongside marketplace.json. If plugin.json sits next to marketplace.json, Claude Code's plugin cache copies the entire repo — including marketplace.json — into ~/.claude/plugins/cache/<marketplace>/<plugin>/. The cached plugin directory then also looks like a marketplace, Claude Code re-enumerates it, and you get cache/.../cache/... recursion until ENAMETOOLONG.
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.
- 20d ago Changed 8453e8c10964
- 28d ago Changed 6350f85a5373
- 1mo ago Changed · +4 lines · +158 tokens per session f7c688edec65
- 1mo ago First seen · 66 lines · 899 tokens per session scan A cc81d5eca042
vibe-engineering CLAUDE.md is an instructions file published in the GitHub repository ash1794/vibe-engineering (165 stars, last pushed 20d ago), licensed MIT. It adds 1,057 tokens to every session, about $0.0042 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).
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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
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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.
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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.