Borrowing it
Nothing to install: this file belongs to esaio/esa-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/esaio/esa-skills/main/AGENTS.mdgit clone --depth 1 https://github.com/esaio/esa-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/esaio/esa-skills/agents-md)<a href="https://agentmods.dev/instructions/esaio/esa-skills/agents-md"><img src="https://agentmods.dev/badge/instructions/esaio/esa-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/esaio/esa-skills/agents-md"><img src="https://agentmods.dev/badge/instructions/esaio/esa-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 | $0.01541 | $0.01541 |
| Opus 5 | $0.00771 | $0.00771 |
| Sonnet 5 | $0.00308 | $0.00308 |
| Haiku 4.5 | $0.00154 | $0.00154 |
Grade A, and why
esa-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 8d 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 — 103 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md
プロジェクト概要
AI エージェント（Claude Code / Cursor / Gemini CLI / Codex CLI）から esa CLI
（@esaio/esa-cli）を操作させるためのスキル配布リポジトリ。esa CLI 本体の
実装コードは持たず、スキル定義（SKILL.md）、各エージェント向けの manifest、
配布用 asset、不変条件を検査するスクリプトで構成する。
構成
skills/esa-cli/SKILL.md— スキル定義の唯一の正本.claude-plugin/marketplace.json— Claude Code / Codex マーケットプレイス定義gemini-extension.json— Gemini CLI 拡張定義.cursor-plugin/marketplace.json— Cursor チームマーケットプレイス定義.cursor-plugin/plugin.json— Cursor プラグイン manifestassets/logo.svg—.cursor-plugin/plugin.jsonが参照するロゴpackage.json— version の在り処の一つ（Validation 参照）scripts/validate.mjs— 不変条件の検証
4 エージェントすべてが同じ skills/ を正本にする。複製もコピーも持たない。
- Claude Code — marketplace エントリが
source: "./"＋skills: ["./skills/esa-cli"]でルートを指す。マーケットプレイスルートをsourceにしてskillsでスキル ディレクトリを列挙する形は公式ドキュメントに記載のあるパターン。 https://code.claude.com/docs/en/plugin-marketplaces - Codex —
$REPO_ROOT/.claude-plugin/marketplace.jsonを legacy-compatible な マーケットプレイスとして読む。プラグインが同梱するスキルはプラグインルートのskills/に置く規約で、source: "./"の本リポジトリはこれを満たす。 この互換経路を意図的に使うため、Codex ネイティブ形式で必要になる.codex-plugin/plugin.jsonは置かない。 https://learn.chatgpt.com/docs/build-plugins - Gemini CLI — ルートの
gemini-extension.json＋skills/<name>/SKILL.mdがgemini extensions new <path> skillsが生成する公式テンプレートそのもの。skillsを宣言するフィールドは無く、ディレクトリ規約で発見される。 https://github.com/google-gemini/gemini-cli/blob/main/docs/extensions/writing-extensions.md - Cursor — marketplace エントリが
source: "./"でルートを指し、.cursor-plugin/plugin.jsonを marketplace.json と同じディレクトリに置く。 plugin root = リポジトリルートなのでskillsもlogoもルート基準で解決する。 https://github.com/cursor/plugin-template
frontmatter の name はディレクトリ名と一致させること（Agent Skills 仕様の要件）。
スキル名を変える場合はディレクトリ名・name・.claude-plugin/marketplace.json の
skills を揃えて変更する。
プラグイン名（＝各マニフェストの name）は esa、スキル名は esa-cli で、
意図的に別にしている。Claude Code などは一覧やツール名を プラグイン名:スキル名
の形で表示するため、両方 esa-cli にすると esa-cli:esa-cli と重複して見える。
プラグイン名 = 名前空間（esa）、スキル名 = 具体的な機能（esa-cli）にして
esa:esa-cli と読めるようにしてある。プラグイン名は次の 4 箇所で揃える。
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.
- 8d ago First seen · 103 lines · 1,541 tokens per session scan A 5a42c8bbc0a6
esa-skills AGENTS.md is an instructions file published in the GitHub repository esaio/esa-skills (5 stars, last pushed yesterday), licensed MIT. It adds 1,541 tokens to every session, about $0.0077 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).
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.
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.