Borrowing it
Nothing to install: this file belongs to yasunori0418/skills. 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/yasunori0418/skills/main/AGENTS.mdgit clone --depth 1 https://github.com/yasunori0418/skillsWrote 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/yasunori0418/skills/agents-md)<a href="https://agentmods.dev/instructions/yasunori0418/skills/agents-md"><img src="https://agentmods.dev/badge/instructions/yasunori0418/skills/agents-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/yasunori0418/skills/agents-md"><img src="https://agentmods.dev/badge/instructions/yasunori0418/skills/agents-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 | $0.03387 | $0.03387 |
| Opus 5 | $0.01693 | $0.01693 |
| Sonnet 5 | $0.00677 | $0.00677 |
| Haiku 4.5 | $0.00339 | $0.00339 |
Grade A, and why
skills AGENTS.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 5d 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 — 154 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md
複数の AI エージェント（Claude Code / Codex 等）共通の作業ガイド。
CLAUDE.md は本ファイルへの symlink であり、編集は常に AGENTS.md に対して行う
（二重管理・乖離を防ぐため）。利用者向けの説明は README.md を参照。
このリポジトリは何か
AI エージェント向けスキルを管理するリポジトリ。スキルは 3 つのレイヤーを併用する。 加えて Claude Code 限定で、スキルに紐づく任意のサブエージェント層を持てる。
| レイヤー | 担当 | 実体 |
|---|---|---|
| スキルの中身 | agentskills.io 標準 | skills/<category>/<skill-name>/SKILL.md |
| 配布・パッケージング | Claude Code plugin | per-category skills/<category>/.claude-plugin/plugin.json + .claude-plugin/marketplace.json（17 プラグイン） |
| Codex 連携 | 本リポジトリの慣習 | per-skill agents/openai.yaml |
| claude-code サブエージェント（任意） | Claude Code plugin | per-skill agents/<name>.md |
| 運用 hook | Claude Code plugin | skill 非依存: hook 単位プラグイン hooks/<plugin>/hooks/hooks.json / skill 連動: skills/<category>/hooks/hooks.json |
プラグイン構成（カテゴリ別 N plugins）
1 マーケットプレイス（.claude-plugin/marketplace.json）に 17 プラグイン
（カテゴリ 8 + hook 9）を列挙し、利用者はカテゴリ単位・hook 単位で install できる。
- カテゴリプラグイン（8 個）:
skills/<category>/が各プラグイン root。skills/<category>/.claude-plugin/plugin.json（name: "<category>-skills"）を置き、 marketplace のsourceは./skills/<category>。skills/agents参照は category root からの相対（./<skill-name>/./<skill-name>/agents/<name>.md）。 - hook プラグイン（9 個）: skill 非依存の guard/通知 hook を hook 単位で
独立プラグイン化し、利用者が個別に install / on-off できる。各プラグイン root は
hooks/<plugin>/（yasunori0418-askuserquestion-hooks/yasunori0418-webfetch-github-guard-hooks/yasunori0418-sudo-guard-hooks/yasunori0418-broad-scan-guard-hooks/yasunori0418-noclobber-guard-hooks/yasunori0418-notify-stop-hooks/yasunori0418-task-boundary-hooks/yasunori0418-teammate-leak-guard-hooks/yasunori0418-fabricated-toolcall-guard-hooks）。root 直下に.claude-plugin/plugin.jsonとhooks/hooks.jsonを置き、実体はhooks/<name>/main.sh。 marketplace のsourceは./hooks/<plugin>。skill は含まない。 - hook の所属: skill に依存しない guard/通知 hook は上記の hook 単位プラグインへ置く
（関心事ごとに分離し、まとめて有効化しない）。skill とペアで機能する hook
（例
git-guardは rebase-flow/reset-flow の arm marker とペア）は、その skill の カテゴリプラグインにskills/<category>/hooks/として同居させる。
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.
- 5d ago Changed · -6 lines · -178 tokens per session f41a69cf4155
- 6d ago Changed · +1 lines · +17 tokens per session 2c30dfa037f1
- 10d ago First seen · 159 lines · 3,548 tokens per session scan A 12f6991ea4e4
skills AGENTS.md is an instructions file published in the GitHub repository yasunori0418/skills (9 stars, last pushed 3d ago), licensed MIT. It adds 3,387 tokens to every session, about $0.0169 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.
Other instructions, from other repositories
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.
codex AGENTS.md
AGENTS.md instructions for openai/codex, covering rust/codex-rs, the codex-core crate, code review rules, crate api surface and model visible context.
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).
spec-kit AGENTS.md
AGENTS.md instructions for github/spec-kit, covering agents.md, about spec kit and specify, quickstart — add a new integration in 5 steps, integration architecture and integrationmanifest — file tracking.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, applying the notice (cutover) and fallback chain (never fail the build).
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.