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Freee Mcp Solo

@kogasura

About Freee Mcp Solo

A use-case driven MCP server for freee accounting, designed for sole proprietors in Japan.

Config

Add this server to your MCP-compatible client using the configuration below.

{
  "mcpServers": {
    "freee-solo": {
      "command": "npx",
      "args": [
        "-y",
        "freee-mcp-solo"
      ]
    }
  }
}

Tools

6

OAuth認証の開始・状態確認。初回認証やトークン失効時に使用。

未処理(未仕訳)の口座明細一覧を取得する。口座名や期間で絞込可能。

取引(仕訳)を登録する。勘定科目は名前で指定。税区分は勘定科目のデフォルトを自動適用。口座指定で明細と自動紐付け。

月次の収支サマリーを勘定科目別に集計して表示する。

請求書を作成する(下書き)。取引先名で指定。入金期日は設定ファイルのルールから自動計算。明細は複数行対応。

請求書の一覧を取得する。取引先名で絞込可能。

Overview

What is Freee Mcp Solo?

An MCP (Model Context Protocol) server specialized for freee Accounting, designed for sole proprietors and freelancers to handle daily bookkeeping tasks. It allows Claude Code or Claude Desktop to execute journal entries, invoice creation, and monthly summaries via simple tool calls.

How to use Freee Mcp Solo?

Install globally with npm install -g freee-mcp-solo, create a configuration file at ~/.config/freee-mcp-solo/config.yaml with freee developer credentials, and register the server in your MCP client (Claude Code or Claude Desktop) by adding the command to the appropriate config file. After setup, run the authenticate tool to obtain OAuth tokens.

Key features of Freee Mcp Solo

  • Use-case driven: optimized for actual accounting workflows, not a raw API wrapper.
  • Name-based operations: specify accounts, partners, and banks by name.
  • Flexible YAML configuration for payment details, due date rules, and subject templates.
  • Automatic full-width/half-width normalization for matching bank names.

Use cases of Freee Mcp Solo

  • Registering unreconciled bank transactions as journal entries.
  • Creating draft invoices with automatic due dates and subject templates.
  • Viewing monthly income/expense summaries by account category.
  • Listing pending transactions and invoices via Claude prompts.

FAQ from Freee Mcp Solo

What are the prerequisites for using Freee Mcp Solo?

Node.js 20 or higher, a freee Accounting account (Personal Business Plan or above), and a freee developer app’s Client ID and Client Secret obtained from the freee developer portal.

How do I set up the configuration file?

Create ~/.config/freee-mcp-solo/config.yaml from the provided example and fill in your freee app credentials, bank information, invoice defaults, and partner-specific settings like due date rules and subject templates.

What tools does Freee Mcp Solo provide?

It offers authenticate, pending_transactions, create_deal, monthly_summary, create_invoice, and list_invoices tools for handling OAuth, transaction entry, monthly reports, and invoice management.

How does the server handle authentication?

On first use, running the authenticate tool opens a browser window for freee login and authorization. OAuth tokens are saved locally, and the company ID/name are automatically written to the config file.

Which freee APIs does the server use?

The server uses freee’s Accounting API (https://api.freee.co.jp/api/1/) for journal entries, account details, and master data, and the Invoice API (https://api.freee.co.jp/iv/) for invoice creation and listing.

Frequently asked questions

What are the prerequisites for using Freee Mcp Solo?

Node.js 20 or higher, a freee Accounting account (Personal Business Plan or above), and a freee developer app’s Client ID and Client Secret obtained from the freee developer portal.

How do I set up the configuration file?

Create `~/.config/freee-mcp-solo/config.yaml` from the provided example and fill in your freee app credentials, bank information, invoice defaults, and partner-specific settings like due date rules and subject templates.

What tools does Freee Mcp Solo provide?

It offers `authenticate`, `pending_transactions`, `create_deal`, `monthly_summary`, `create_invoice`, and `list_invoices` tools for handling OAuth, transaction entry, monthly reports, and invoice management.

How does the server handle authentication?

On first use, running the `authenticate` tool opens a browser window for freee login and authorization. OAuth tokens are saved locally, and the company ID/name are automatically written to the config file.

Which freee APIs does the server use?

The server uses freee’s Accounting API (`https://api.freee.co.jp/api/1/`) for journal entries, account details, and master data, and the Invoice API (`https://api.freee.co.jp/iv/`) for invoice creation and listing.

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