Borrowing it
Nothing to install: this file belongs to yuji-hatakeyama/claude-code-perlnavigator. 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/yuji-hatakeyama/claude-code-perlnavigator/main/CLAUDE.mdgit clone --depth 1 https://github.com/yuji-hatakeyama/claude-code-perlnavigatorWrote 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/yuji-hatakeyama/claude-code-perlnavigator/claude-md)<a href="https://agentmods.dev/instructions/yuji-hatakeyama/claude-code-perlnavigator/claude-md"><img src="https://agentmods.dev/badge/instructions/yuji-hatakeyama/claude-code-perlnavigator/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/yuji-hatakeyama/claude-code-perlnavigator/claude-md"><img src="https://agentmods.dev/badge/instructions/yuji-hatakeyama/claude-code-perlnavigator/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 | $0.00361 | $0.00361 |
| Opus 5 | $0.00180 | $0.00180 |
| Sonnet 5 | $0.00072 | $0.00072 |
| Haiku 4.5 | $0.00036 | $0.00036 |
Grade A, and why
claude-code-perlnavigator 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 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.
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.
What it actually says
CLAUDE.md
This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
プロジェクト概要
Claude Code に Perl 言語サポートを提供するプラグイン。PerlNavigator LSP サーバーを stdio トランスポートで統合し、 Perl ファイル (.pl, .pm, .t, .cgi, .psgi) の診断・補完・ナビゲーション機能を提供する。
アーキテクチャ
Claude Code → Plugin System → .lsp.json → PerlNavigator LSP (perlnavigator --stdio)
↑
hooks.json (SessionStart) → check-perlnavigator.sh
.lsp.json: LSP サーバーの接続設定（コマンド、対応拡張子、トランスポート方式）.claude-plugin/plugin.json: プラグインメタデータ（名前、バージョン、キーワード）.claude-plugin/marketplace.json: マーケットプレイス配布用マニフェストhooks/hooks.json: SessionStart フックでcheck-perlnavigator.shを実行（タイムアウト10秒）scripts/check-perlnavigator.sh: perlnavigator のインストール・更新状態を確認しユーザーに通知
ビルド・テスト
ビルドやテストの仕組みはない。設定ファイルとシェルスクリプトのみで構成されるプラグインのため。
前提条件
npm install -g perlnavigator-server
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 First seen · 33 lines · 361 tokens per session scan A 7bec524597cd
claude-code-perlnavigator CLAUDE.md is an instructions file published in the GitHub repository yuji-hatakeyama/claude-code-perlnavigator (9 stars, last pushed 7mo ago), licensed MIT. It adds 361 tokens to every session, about $0.0018 per session on Opus 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.
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