Borrowing it
Nothing to install: this file belongs to nel-neru/LibrAIum. 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/nel-neru/LibrAIum/main/CLAUDE.mdgit clone --depth 1 https://github.com/nel-neru/LibrAIumWrote 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/nel-neru/libraium/claude-md)<a href="https://agentmods.dev/instructions/nel-neru/libraium/claude-md"><img src="https://agentmods.dev/badge/instructions/nel-neru/libraium/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/nel-neru/libraium/claude-md"><img src="https://agentmods.dev/badge/instructions/nel-neru/libraium/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 | $0.03266 | $0.03266 |
| Opus 5.5 | $0.01306 | $0.01306 |
| Sonnet 5.5 | $0.00653 | $0.00653 |
| Haiku 4.5 | $0.00327 | $0.00327 |
Grade A, and why
LibrAIum 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.
This is a copy
94% identical to LibrAIum AGENTS.md — 12 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 81 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.
Language
Always converse with the user in Japanese — replies, explanations, plans, questions, and progress reports. Keep repository artifacts in English: code, comments, commit messages, README/docs, and identifiers (the repo is published publicly in English; the owner reads both).
What LibrAIum Is
A local-first Tauri v2 + Svelte 5 desktop app for curating best-practice GitHub repositories, storing everything as YAML-frontmatter Markdown files in a local git repository, and exposing the library to Claude Code through an MCP server. The authoritative spec is LibrAIum_完全設計書_v1.0.md (Japanese). v1.0 MVP is fully implemented.
Commands
npm run tauri dev # run the desktop app (Rust compiles on first run)
npm run tauri build # package release build
npm run build # frontend-only production build (vite)
npm test # frontend unit tests (markdown-renderer hardening, node --test)
cd src-tauri && cargo test # Rust unit tests — all core logic lives here
cd src-tauri && cargo test store # run one module's tests (store/search/gitops/github/…)
cd mcp-server && npm test # store.js unit tests + MCP stdio smoke test (all 8 tools)
bash scripts/make-icons.sh # regenerate icons from scripts/generate-icons.mjs (macOS)
node scripts/register-mcp.mjs # user-scope MCP registration plan (--yes to apply, --doctor to diagnose)
Rust was installed via Homebrew; if cargo is missing from PATH: export PATH="/opt/homebrew/bin:$PATH".
Note: cargo test/cargo build require dist/ to exist (Tauri's generate_context! embeds it) — run npm run build first on a fresh clone.
Architecture
Two independent consumers share one data format:
- Desktop app — Svelte 5 GUI (
src/) → Tauri commands (src-tauri/src/commands.rs) → Rust core modules. - MCP server (
mcp-server/, Node stdio) — reads/writes the samedata/directory directly.
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 · 81 lines · 3,266 tokens per session scan A b2fe82938c1a
LibrAIum CLAUDE.md is an instructions file published in the GitHub repository nel-neru/LibrAIum (0 stars, last pushed 28d ago), licensed MIT. It adds 3,266 tokens to every session, about $0.0131 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 94% identical to LibrAIum AGENTS.md, differing in 12 lines, and is treated as a copy.
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.