Borrowing it
Nothing to install: this file belongs to queelius/claude-anvil. 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/queelius/claude-anvil/master/CLAUDE.mdgit clone --depth 1 https://github.com/queelius/claude-anvilWrote 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/queelius/claude-anvil/claude-md)<a href="https://agentmods.dev/instructions/queelius/claude-anvil/claude-md"><img src="https://agentmods.dev/badge/instructions/queelius/claude-anvil/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/queelius/claude-anvil/claude-md"><img src="https://agentmods.dev/badge/instructions/queelius/claude-anvil/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 | $0.03342 | $0.03342 |
| Opus 5.5 | $0.01337 | $0.01337 |
| Sonnet 5.5 | $0.00668 | $0.00668 |
| Haiku 4.5 | $0.00334 | $0.00334 |
Grade B, and why
claude-anvil CLAUDE.md scanned grade B with 1 finding 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 9d 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.
Reads agent configuration directoriesmediumAgent snooping
.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.
`~/.claude/settings.json` declares `queelius-plugins` under `extraKnownMarketplaces` as a `directory` source pointing at this checkout. Relative-path plugins from a directory marketplace **load in place** from this worki How it starts
The opening of the file, as written. The whole thing — 146 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.
What This Is
A Claude Code plugin marketplace named queelius-plugins (the name in .claude-plugin/marketplace.json; the GitHub repo is queelius/claude-anvil). All plugins are distributed as a single git repo. Most plugins are Markdown with YAML frontmatter; vista (Python, pytest via uv) and kdp's MCP server (TypeScript, vitest via npm) carry real code and tests, and worldsmith/bookwright have hook scripts with shell and pytest suites. CI (.github/workflows/validate.yml) runs all of them plus scripts/check-plugins.py.
Install: /plugin marketplace add queelius/claude-anvil
Install a plugin: /plugin install repoindex@queelius-plugins
| Plugin | Dir | Purpose |
|---|---|---|
| papermill | papermill/ |
Academic paper lifecycle: thesis, lit survey, experiment, review, venue, submission |
| worldsmith | worldsmith/ |
Documentation-first fiction worldbuilding (the "Silmarillion approach") |
| pub-pipeline | pub-pipeline/ |
Publication workflows: R/CRAN/JOSS, Python/PyPI |
| mf | mf/ |
Metafunctor site management: CLI workflows over the Hugo site |
| repoindex | repoindex/ |
Repository intelligence (repo-polish, repo-explorer) plus five workflow slash commands. MCP-first over a local git catalog |
| alex-confidential | alex-confidential/ |
Confidentiality toolkit: cryptoid, pagevault, gpg |
| kdp | kdp/ |
Amazon KDP book publishing: manuscript audit, listing craft, submission workflow, cover MCP server |
| crier | crier/ |
Cross-post blog content to multiple platforms via the crier MCP server |
| research-agent | research-agent/ |
Autonomous research agent with a status/resume/synthesize/branch control surface for long runs |
| vista | vista/ |
Surface salient research directions from highly-cited papers. Live OpenAlex search, PDF section extraction, structured catalog |
| bookwright | bookwright/ |
Non-fiction book authoring: LaTeX + paired computational notebooks, multi-agent drafting/review, design→plan→draft→integrate workflow |
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.
- 9d ago Changed · -9 lines · +64 tokens per session 68a50e045a6b
- 12d ago Changed · +2 lines · +263 tokens per session ee1566cd64f0
- 2mo ago First seen · 153 lines · 3,015 tokens per session scan B 7fac2221af52
claude-anvil CLAUDE.md is an instructions file published in the GitHub repository queelius/claude-anvil (2 stars, last pushed 10d ago), licensed MIT. It adds 3,342 tokens to every session, about $0.0134 per session on Opus 5.5. A static security scan graded it B with 1 finding (reads agent configuration directories). 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).
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.