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esa-mcp-server: Instructions file for Claude Code

CLAUDE.md

esa-mcp-server CLAUDE.md is an instructions file for Claude Code from d-kimuson/esa-mcp-server. It costs 667 tokens per session, scanned A, original, MIT.

Project instructions for an esa.io integration that lets an AI tool search, read, create, update, and delete esa posts. esa.io is a team knowledge and documentation service.

In plain words
What is it for?
Use it when developing or maintaining the esa.io MCP server, generating its API client, running tests and type checks, or working with its post-management tools.
Why use it?
It explains how to build, test, lint, and inspect the integration, and where its main TypeScript, API, and generated-code parts are located.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: mentions CLAUDE.md; mentions Claude Code.

This is d-kimuson/esa-mcp-server's own configuration. It tells Claude Code how to work on esa-mcp-server itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything esa-mcp-server configures →

not rated 37repo 1y ago A scan 667 tokens original MIT
View source ↗ d-kimuson/esa-mcp-server
Reuse

Borrowing it

Nothing to install: this file belongs to d-kimuson/esa-mcp-server. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/d-kimuson/esa-mcp-server/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/d-kimuson/esa-mcp-server

Made for: Claude Code.

Wrote 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.

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README.md
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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.

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Your own site · 80×15
<a href="https://agentmods.dev/instructions/d-kimuson/esa-mcp-server/claude-md"><img src="https://agentmods.dev/badge/instructions/d-kimuson/esa-mcp-server/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 667 This file is loaded in full into every session.
When invoked 667 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00667 $0.00667
Opus 5.5 $0.00267 $0.00267
Sonnet 5.5 $0.00133 $0.00133
Haiku 4.5 $0.00067 $0.00067

Measured 2mo ago against content hash 7ce731a51230, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

esa-mcp-server 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 2mo 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.

CLAUDE.md · 48 lines

What it actually says

CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

開発コマンド

  • ビルド: pnpm build - orvalによるコード生成 + esbuildによるバンドルを実行
  • 開発モード: pnpm dev - TypeScriptのwatch mode + OpenAPIのwatch modeを開始
  • テスト: pnpm test - vitestのテストスイートを実行
  • リント: pnpm lint - redocly lint + prettierチェックを実行
  • 型チェック: pnpm typecheck - TypeScriptの型チェックを実行
  • コード整形: pnpm fix - prettierで自動フォーマット
  • MCP Inspector: pnpm inspect - ビルド後にMCPインスペクターを起動（デバッグ用）

アーキテクチャ概要

このプロジェクトは esa.io API を MCP (Model Context Protocol) サーバーとして提供するものです。

主要コンポーネント

  • エントリーポイント: src/index.ts - stdio transportでMCPサーバーを作成・起動
  • サーバー定義: src/server.ts - 全MCPツールとその実装を定義
  • APIクライアント: src/api.ts - esa.io API呼び出しとエラーハンドリング、レスポンス処理
  • 生成されたAPI: src/generated/esa-api/ - orvalでOpenAPI仕様から自動生成

提供するMCPツール

  1. get_search_query_document - 検索クエリのドキュメントを返す
  2. search_esa_posts - ページネーションとフィルタリングでesa記事を検索
  3. read_esa_post / read_esa_multiple_posts - 記事コンテンツを取得
  4. create_esa_post / update_esa_post / delete_esa_post - CRUD操作

コード生成ワークフロー

orvalを使用してOpenAPI仕様からTypeScript APIクライアントコードを生成：

  • OpenAPI仕様は openapi-spec/ ディレクトリに格納
  • orval設定は orval.config.ts
  • 生成されたコードは src/generated/esa-api/ に配置
  • pnpm build:orval でAPIクライアントを再生成

環境変数

  • ESA_API_KEY - esa.io API認証に必要
  • DEFAULT_ESA_TEAM - esa操作のデフォルトチーム名

レスポンス形式

全ツールレスポンスは formatTool ユーティリティを通じてトークン効率化のためYAML形式を使用。

Changes

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.

  1. 2mo ago First seen · 48 lines · 667 tokens per session scan A 7ce731a51230

Subscribe to this mod's changes

esa-mcp-server CLAUDE.md is an instructions file published in the GitHub repository d-kimuson/esa-mcp-server (37 stars, last pushed 1y ago), licensed MIT. It adds 667 tokens to every session, about $0.0027 per session on Opus 5.5. 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 2026-08-30.

Backend and APIsDocuments
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