mf-invoice-mcp: Instructions file for Claude Code

CLAUDE.md

mf-invoice-mcp CLAUDE.md is an instructions file for Claude Code from tera911/mf-invoice-mcp. It costs 1,748 tokens per session, scanned A, original, MIT.

Project-specific instructions for an MCP plugin connecting Money Forward Cloud Invoicing and Expense APIs. These APIs support business tasks such as quotes, invoices, expenses, receipts, and reports.

In plain words
What is it for?
Use it when developing or maintaining tools for Money Forward invoices, quotes, billing, expenses, receipts, and related records.
Why use it?
It documents the project structure, authentication separation, shared API handling, and a limitation that delivery notes cannot be created through the stated API version.

Instructions file for Claude Code

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

This is tera911/mf-invoice-mcp's own configuration. It tells Claude Code how to work on mf-invoice-mcp 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 mf-invoice-mcp configures →

Reuse

Borrowing it

Nothing to install: this file belongs to tera911/mf-invoice-mcp. 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/tera911/mf-invoice-mcp/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/tera911/mf-invoice-mcp

Made for: Claude Code.

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README.md
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Per session 1,748 This file is loaded in full into every session.
When invoked 1,748 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 $0.01748 $0.01748
Opus 5 $0.00874 $0.00874
Sonnet 5 $0.00350 $0.00350
Haiku 4.5 $0.00175 $0.00175

Measured 7d ago against content hash 016561b2331a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

mf-invoice-mcp 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 7d 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 · 142 lines

How it starts

The opening of the file, as written. The whole thing — 142 lines — stays where its author put it; the contents beside it link to each section on GitHub.

MF MCP 開発ガイド

このファイルはClaude Code向けのプロジェクト固有の指示です。

プロジェクト概要

MoneyForward クラウド請求書 API v3 + クラウド経費 API を統合したMCPプラグイン。 インボイス制度対応の見積書・請求書の作成自動化、および経費管理を目的としています。

注意: v3 APIでは納品書作成エンドポイントが提供されていません。納品書が必要な場合はマネーフォワードのWebUIで作成してください。

アーキテクチャ

src/
├── index.ts                     # MCPサーバーエントリポイント(全ツール登録)
├── config.ts                    # サービス設定の一元管理
├── auth/
│   ├── oauth.ts                 # OAuth 2.0認証(パラメータ化)
│   └── registry.ts              # サービス名 → OAuthManager マッピング
├── api/
│   ├── client.ts                # 共通APIクライアント(パラメータ化)
│   ├── rate-limiter.ts          # レート制限(共有インスタンス)
│   ├── invoice/                 # 請求書APIモジュール
│   │   ├── partners.ts
│   │   ├── items.ts
│   │   ├── quotes.ts
│   │   ├── billings.ts
│   │   └── delivery.ts
│   └── expense/                 # 経費APIモジュール
│       ├── offices.ts
│       ├── transactions.ts
│       ├── reports.ts
│       ├── receipts.ts
│       └── master.ts
├── tools/
│   ├── invoice/                 # 請求書ツール
│   │   ├── auth.ts
│   │   ├── partners.ts
│   │   ├── items.ts
│   │   ├── quotes.ts
│   │   ├── billings.ts
│   │   └── delivery.ts
│   └── expense/                 # 経費ツール
│       ├── auth.ts
│       ├── offices.ts
│       ├── transactions.ts
│       ├── reports.ts
│       ├── receipts.ts
│       └── master.ts
└── types/
    ├── index.ts                 # 型 re-export
    ├── common.ts                # 共通型(OAuth, Pagination, ApiError)
    └── expense.ts               # 経費API型定義

デュアルAPI設計

認証の分離

  • 請求書APIと経費APIはそれぞれ別のOAuthクライアントキーを使用
  • auth/registry.ts がサービス名('invoice' | 'expense')でOAuthManagerを遅延生成・キャッシュ
  • トークンは別ファイルに保存:
    • 請求書: ~/.config/mf-mcp/invoice-tokens.json
    • 経費: ~/.config/mf-mcp/expense-tokens.json
  • 旧パス ~/.config/mf-invoice-mcp/tokens.json からの自動マイグレーション対応

環境変数

変数 用途 備考
MF_INVOICE_CLIENT_ID 請求書APIクライアントID MF_CLIENT_IDでも可(後方互換)
MF_INVOICE_CLIENT_SECRET 請求書APIシークレット MF_CLIENT_SECRETでも可
MF_EXPENSE_CLIENT_ID 経費APIクライアントID
MF_EXPENSE_CLIENT_SECRET 経費APIシークレット
MF_CALLBACK_PORT OAuthコールバックポート デフォルト38080、共有

Read the full file on GitHub · 142 lines

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. 7d ago First seen · 142 lines · 1,748 tokens per session scan A 016561b2331a

Subscribe to this mod's changes

mf-invoice-mcp CLAUDE.md is an instructions file published in the GitHub repository tera911/mf-invoice-mcp (1 stars, last pushed 5mo ago), licensed MIT. It adds 1,748 tokens to every session, about $0.0087 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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